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    <link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_E147F7755AB7BB94EE03B876DEFC14FE_label_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_E147F7755AB7BB94EE03B876DEFC14FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_E147F7755AB7BB94EE03B876DEFC14FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_E147F7755AB7BB94EE03B876DEFC14FE" xlink:to="lab_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_E147F7755AB7BB94EE03B876DEFC14FE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_E40ABA3F28B9FA80F1B2B876DEFC09EB_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_E40ABA3F28B9FA80F1B2B876DEFC09EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Award vesting period</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_E40ABA3F28B9FA80F1B2B876DEFC09EB_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_E40ABA3F28B9FA80F1B2B876DEFC09EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_E40ABA3F28B9FA80F1B2B876DEFC09EB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_E40ABA3F28B9FA80F1B2B876DEFC09EB" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_E40ABA3F28B9FA80F1B2B876DEFC09EB" xlink:type="arc" />
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeLowerRangeLimit_51C71D500A47AB8A5089B876DEFC26F8_terseLabel_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeLowerRangeLimit_51C71D500A47AB8A5089B876DEFC26F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Performance Condition Vesting Range, Lower Range Limit</link:label>
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeLowerRangeLimit_51C71D500A47AB8A5089B876DEFC26F8_label_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeLowerRangeLimit_51C71D500A47AB8A5089B876DEFC26F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Performance Condition Vesting Range, Lower Range Limit</link:label>
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeLowerRangeLimit_51C71D500A47AB8A5089B876DEFC26F8_documentation_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeLowerRangeLimit_51C71D500A47AB8A5089B876DEFC26F8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">For awards with a performance condition that results in a variable percentage of shares being earned, relative to the number of awards originally granted, the lower range limit of the variable percentage range.</link:label>
    <link:loc xlink:href="itri-20150930.xsd#itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeLowerRangeLimit" xlink:label="loc_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeLowerRangeLimit_51C71D500A47AB8A5089B876DEFC26F8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeLowerRangeLimit_51C71D500A47AB8A5089B876DEFC26F8" xlink:to="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeLowerRangeLimit_51C71D500A47AB8A5089B876DEFC26F8" xlink:type="arc" />
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeUpperRangeLimit_98AE75D89834FAA540BDB876DEFC212A_terseLabel_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeUpperRangeLimit_98AE75D89834FAA540BDB876DEFC212A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Performance Condition Vesting Range, Upper Range Limit</link:label>
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeUpperRangeLimit_98AE75D89834FAA540BDB876DEFC212A_label_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeUpperRangeLimit_98AE75D89834FAA540BDB876DEFC212A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Performance Condition Vesting Range, Upper Range Limit</link:label>
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeUpperRangeLimit_98AE75D89834FAA540BDB876DEFC212A_documentation_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeUpperRangeLimit_98AE75D89834FAA540BDB876DEFC212A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">For awards with a performance condition that results in a variable percentage of shares being earned, relative to the number of awards originally granted, the upper range limit of the variable percentage range.</link:label>
    <link:loc xlink:href="itri-20150930.xsd#itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeUpperRangeLimit" xlink:label="loc_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeUpperRangeLimit_98AE75D89834FAA540BDB876DEFC212A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeUpperRangeLimit_98AE75D89834FAA540BDB876DEFC212A" xlink:to="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceConditionVestingRangeUpperRangeLimit_98AE75D89834FAA540BDB876DEFC212A" xlink:type="arc" />
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierLowerRangeLimit_D9DA51D1A3B798CA4913B876DEFC3865_terseLabel_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierLowerRangeLimit_D9DA51D1A3B798CA4913B876DEFC3865" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Market Condition Multiplier, Lower Range Limit</link:label>
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierLowerRangeLimit_D9DA51D1A3B798CA4913B876DEFC3865_label_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierLowerRangeLimit_D9DA51D1A3B798CA4913B876DEFC3865" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Market Condition Multiplier, Lower Range Limit</link:label>
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierLowerRangeLimit_D9DA51D1A3B798CA4913B876DEFC3865_documentation_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierLowerRangeLimit_D9DA51D1A3B798CA4913B876DEFC3865" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">For a multiplier payout feature, which provides for the multiplication of shares earned by a percentage factor as the result of achievement against a market condition, the lower range limit of the multiplier, in percentage terms.</link:label>
    <link:loc xlink:href="itri-20150930.xsd#itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierLowerRangeLimit" xlink:label="loc_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierLowerRangeLimit_D9DA51D1A3B798CA4913B876DEFC3865" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierLowerRangeLimit_D9DA51D1A3B798CA4913B876DEFC3865" xlink:to="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierLowerRangeLimit_D9DA51D1A3B798CA4913B876DEFC3865" xlink:type="arc" />
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierUpperRangeLimit_D155AAD78F0C0094BAA6B876DEFC66DC_terseLabel_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierUpperRangeLimit_D155AAD78F0C0094BAA6B876DEFC66DC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Market Condition Multiplier, Upper Range Limit</link:label>
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierUpperRangeLimit_D155AAD78F0C0094BAA6B876DEFC66DC_label_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierUpperRangeLimit_D155AAD78F0C0094BAA6B876DEFC66DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Market Condition Multiplier, Upper Range Limit</link:label>
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierUpperRangeLimit_D155AAD78F0C0094BAA6B876DEFC66DC_documentation_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierUpperRangeLimit_D155AAD78F0C0094BAA6B876DEFC66DC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">For a multiplier payout feature, which provides for the multiplication of shares earned by a percentage factor as the result of achievement against a market condition, the upper range limit of the multiplier, in percentage terms.</link:label>
    <link:loc xlink:href="itri-20150930.xsd#itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierUpperRangeLimit" xlink:label="loc_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierUpperRangeLimit_D155AAD78F0C0094BAA6B876DEFC66DC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierUpperRangeLimit_D155AAD78F0C0094BAA6B876DEFC66DC" xlink:to="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardMarketConditionMultiplierUpperRangeLimit_D155AAD78F0C0094BAA6B876DEFC66DC" xlink:type="arc" />
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedLowerRangeLimit_5125A4A97DD9997F0915B876DEFC1DE8_terseLabel_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedLowerRangeLimit_5125A4A97DD9997F0915B876DEFC1DE8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Possible Total Percentage of Shares Vested, Lower Range Limit</link:label>
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedLowerRangeLimit_5125A4A97DD9997F0915B876DEFC1DE8_label_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedLowerRangeLimit_5125A4A97DD9997F0915B876DEFC1DE8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Possible Total Percentage of Shares Vested, Lower Range Limit</link:label>
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedLowerRangeLimit_5125A4A97DD9997F0915B876DEFC1DE8_documentation_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedLowerRangeLimit_5125A4A97DD9997F0915B876DEFC1DE8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">For awards whereby a variable percentage of shares will ultimately vest, relative to the number of awards originally granted, based upon the combination of multiple performance or market conditions, the lower range limit of the total variable percentage range.</link:label>
    <link:loc xlink:href="itri-20150930.xsd#itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedLowerRangeLimit" xlink:label="loc_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedLowerRangeLimit_5125A4A97DD9997F0915B876DEFC1DE8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedLowerRangeLimit_5125A4A97DD9997F0915B876DEFC1DE8" xlink:to="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedLowerRangeLimit_5125A4A97DD9997F0915B876DEFC1DE8" xlink:type="arc" />
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedUpperRangeLimit_483A8635CF3AD08F8544B876DEFCF5D0_terseLabel_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedUpperRangeLimit_483A8635CF3AD08F8544B876DEFCF5D0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Possible Total Percentage of Shares Vested, Upper Range Limit</link:label>
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedUpperRangeLimit_483A8635CF3AD08F8544B876DEFCF5D0_label_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedUpperRangeLimit_483A8635CF3AD08F8544B876DEFCF5D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Possible Total Percentage of Shares Vested, Upper Range Limit</link:label>
    <link:label id="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedUpperRangeLimit_483A8635CF3AD08F8544B876DEFCF5D0_documentation_en-US" xlink:label="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedUpperRangeLimit_483A8635CF3AD08F8544B876DEFCF5D0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">For awards whereby a variable percentage of shares will ultimately vest, relative to the number of awards originally granted, based upon the combination of multiple performance or market conditions, the upper range limit of the total variable percentage range.</link:label>
    <link:loc xlink:href="itri-20150930.xsd#itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedUpperRangeLimit" xlink:label="loc_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedUpperRangeLimit_483A8635CF3AD08F8544B876DEFCF5D0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedUpperRangeLimit_483A8635CF3AD08F8544B876DEFCF5D0" xlink:to="lab_itri_ShareBasedCompensationArrangementByShareBasedPaymentAwardPossibleTotalPercentageOfSharesVestedUpperRangeLimit_483A8635CF3AD08F8544B876DEFCF5D0" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_DB0FE5DC2073F4B4121BB876DEFC6B66_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_DB0FE5DC2073F4B4121BB876DEFC6B66" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ESPP, maximum percentage of employee salary eligible for participation</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_DB0FE5DC2073F4B4121BB876DEFC6B66_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_DB0FE5DC2073F4B4121BB876DEFC6B66" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_DB0FE5DC2073F4B4121BB876DEFC6B66" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_DB0FE5DC2073F4B4121BB876DEFC6B66" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_DB0FE5DC2073F4B4121BB876DEFC6B66" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate_9D6CC0F7BD07FF27BB05B876DEFC2701_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate_9D6CC0F7BD07FF27BB05B876DEFC2701" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate_9D6CC0F7BD07FF27BB05B876DEFC2701" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate_9D6CC0F7BD07FF27BB05B876DEFC2701" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate_9D6CC0F7BD07FF27BB05B876DEFC2701" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_1121BAF0DC1E92A6F6E0B876DEFC89C6_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_1121BAF0DC1E92A6F6E0B876DEFC89C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_1121BAF0DC1E92A6F6E0B876DEFC89C6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_1121BAF0DC1E92A6F6E0B876DEFC89C6" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_1121BAF0DC1E92A6F6E0B876DEFC89C6" xlink:type="arc" />
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_EF6E0D2D8836D2A08B36A5DB0EFB5923_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_EF6E0D2D8836D2A08B36A5DB0EFB5923" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2016</link:label>
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_35A5C6ACBF60946B365AA5DB0EFBB0E5_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_35A5C6ACBF60946B365AA5DB0EFBB0E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2017</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_35A5C6ACBF60946B365AA5DB0EFBB0E5" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_35A5C6ACBF60946B365AA5DB0EFBB0E5" xlink:type="arc" />
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    <link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_1F713BD660D6686E1C4DC9A8D6FA5B40_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_1F713BD660D6686E1C4DC9A8D6FA5B40" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Axis]</link:label>
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    <link:label id="lab_us-gaap_MajorCustomersAxis_4E923CC2E8CDA6DB6BC9C9A8D6FABBBD_label_en-US" xlink:label="lab_us-gaap_MajorCustomersAxis_4E923CC2E8CDA6DB6BC9C9A8D6FABBBD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer [Axis]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="loc_us-gaap_NameOfMajorCustomerDomain_37039E01A3063F044118C9A8D6FAFE42" xlink:type="locator" />
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    <link:label id="lab_itri_ThresholdforReportingCustomerConcentrationMember_665BC5B7C90F6B3AC141C9A8D6FAEA3B_label_en-US" xlink:label="lab_itri_ThresholdforReportingCustomerConcentrationMember_665BC5B7C90F6B3AC141C9A8D6FAEA3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Threshold for Reporting Customer Concentration [Member]</link:label>
    <link:label id="lab_itri_ThresholdforReportingCustomerConcentrationMember_665BC5B7C90F6B3AC141C9A8D6FAEA3B_documentation_en-US" xlink:label="lab_itri_ThresholdforReportingCustomerConcentrationMember_665BC5B7C90F6B3AC141C9A8D6FAEA3B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The threshold for reporting customer concentration. For any customer that meets or exceeds this threshold, the percentage of concentration with the given customer or customers is provided.</link:label>
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    <link:label id="lab_itri_CustomerAMember_774E633ACDB427DDEF89C9A8D6FAB0FB_terseLabel_en-US" xlink:label="lab_itri_CustomerAMember_774E633ACDB427DDEF89C9A8D6FAB0FB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customer A [Member]</link:label>
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    <link:label id="lab_itri_CustomerAMember_774E633ACDB427DDEF89C9A8D6FAB0FB_documentation_en-US" xlink:label="lab_itri_CustomerAMember_774E633ACDB427DDEF89C9A8D6FAB0FB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Customer A, for the given filing. This member is exclusive of previous filings (that is, this customer A is not necessarily the same customer A as in previous filings).</link:label>
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    <link:loc xlink:href="itri-20150930.xsd#itri_WaterOperatingSegmentMember" xlink:label="loc_itri_WaterOperatingSegmentMember_23C71401E114B36D41D3C9A8D6FAF114" xlink:type="locator" />
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    <link:label id="lab_itri_WarrantyCharge_6312A7C3E7D7EDA68976AB2ED10DB899_documentation_en-US" xlink:label="lab_itri_WarrantyCharge_6312A7C3E7D7EDA68976AB2ED10DB899" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This tag represents specific cases of warranty charges (adjustments) disclosed.  This is a subset of the tag itri_WarrantyChangesAndAdjustments, which is defined as "Represents the aggregate Increase or Decrease in the liability during the reporting period for accruals related to preexisting product warranties (including adjustments for changes in estimates)."</link:label>
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    <link:label id="lab_us-gaap_EarningsPerShareBasic_6B7FD42FA19575512139AB2ED10D3C8E_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic_6B7FD42FA19575512139AB2ED10D3C8E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Basic</link:label>
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    <link:label id="lab_itri_SmartSynchacquisitionrelatedcostrecovery_2AB120F5B649BD8AFEB3ABB86BAB6A07_terseLabel_en-US" xlink:label="lab_itri_SmartSynchacquisitionrelatedcostrecovery_2AB120F5B649BD8AFEB3ABB86BAB6A07" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">SmartSynch acquisition-related cost recovery</link:label>
    <link:label id="lab_itri_SmartSynchacquisitionrelatedcostrecovery_2AB120F5B649BD8AFEB3ABB86BAB6A07_label_en-US" xlink:label="lab_itri_SmartSynchacquisitionrelatedcostrecovery_2AB120F5B649BD8AFEB3ABB86BAB6A07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SmartSynch acquisition-related cost recovery</link:label>
    <link:label id="lab_itri_SmartSynchacquisitionrelatedcostrecovery_2AB120F5B649BD8AFEB3ABB86BAB6A07_documentation_en-US" xlink:label="lab_itri_SmartSynchacquisitionrelatedcostrecovery_2AB120F5B649BD8AFEB3ABB86BAB6A07" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">SmartSynch acquisition-related cost recovery, reflected in G&amp;A</link:label>
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    <link:label id="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_7D5D1B8E2D36C2211590B876E01ECA4B_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_7D5D1B8E2D36C2211590B876E01ECA4B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Stock-based Compensation Expense by Plan Type [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_7D5D1B8E2D36C2211590B876E01ECA4B" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AB30EC9794EFDCF0EC80B876E01E3C0E_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AB30EC9794EFDCF0EC80B876E01E3C0E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AB30EC9794EFDCF0EC80B876E01E3C0E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_StockOptionPlanExpense_4C4F9616FEF12492AAEFB876E01E07C5_terseLabel_en-US" xlink:label="lab_us-gaap_StockOptionPlanExpense_4C4F9616FEF12492AAEFB876E01E07C5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock options</link:label>
    <link:label id="lab_us-gaap_StockOptionPlanExpense_4C4F9616FEF12492AAEFB876E01E07C5_label_en-US" xlink:label="lab_us-gaap_StockOptionPlanExpense_4C4F9616FEF12492AAEFB876E01E07C5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock or Unit Option Plan Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockOptionPlanExpense" xlink:label="loc_us-gaap_StockOptionPlanExpense_4C4F9616FEF12492AAEFB876E01E07C5" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RestrictedStockExpense_143A053EDA204694232DB876E01E4550_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedStockExpense_143A053EDA204694232DB876E01E4550" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted stock units</link:label>
    <link:label id="lab_us-gaap_RestrictedStockExpense_143A053EDA204694232DB876E01E4550_label_en-US" xlink:label="lab_us-gaap_RestrictedStockExpense_143A053EDA204694232DB876E01E4550" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Stock or Unit Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestrictedStockExpense" xlink:label="loc_us-gaap_RestrictedStockExpense_143A053EDA204694232DB876E01E4550" xlink:type="locator" />
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    <link:label id="lab_itri_UnrestrictedStockAwardsCompensationExpense_98DE04FEF7821FFCA7C1B876E01EE648_terseLabel_en-US" xlink:label="lab_itri_UnrestrictedStockAwardsCompensationExpense_98DE04FEF7821FFCA7C1B876E01EE648" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrestricted stock awards</link:label>
    <link:label id="lab_itri_UnrestrictedStockAwardsCompensationExpense_98DE04FEF7821FFCA7C1B876E01EE648_label_en-US" xlink:label="lab_itri_UnrestrictedStockAwardsCompensationExpense_98DE04FEF7821FFCA7C1B876E01EE648" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrestricted Stock Awards Compensation Expense</link:label>
    <link:label id="lab_itri_UnrestrictedStockAwardsCompensationExpense_98DE04FEF7821FFCA7C1B876E01EE648_documentation_en-US" xlink:label="lab_itri_UnrestrictedStockAwardsCompensationExpense_98DE04FEF7821FFCA7C1B876E01EE648" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The noncash expense that represents the cost of unrestricted stock distributed to board of directors as a portion of their compensation.</link:label>
    <link:loc xlink:href="itri-20150930.xsd#itri_UnrestrictedStockAwardsCompensationExpense" xlink:label="loc_itri_UnrestrictedStockAwardsCompensationExpense_98DE04FEF7821FFCA7C1B876E01EE648" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itri_UnrestrictedStockAwardsCompensationExpense_98DE04FEF7821FFCA7C1B876E01EE648" xlink:to="lab_itri_UnrestrictedStockAwardsCompensationExpense_98DE04FEF7821FFCA7C1B876E01EE648" xlink:type="arc" />
    <link:label id="lab_itri_EmployeeStockPurchasePlanCompensationExpense_439F0EFB021D7C51B4E2B876E01EDADF_terseLabel_en-US" xlink:label="lab_itri_EmployeeStockPurchasePlanCompensationExpense_439F0EFB021D7C51B4E2B876E01EDADF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ESPP</link:label>
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    <link:label id="lab_itri_EmployeeStockPurchasePlanCompensationExpense_439F0EFB021D7C51B4E2B876E01EDADF_documentation_en-US" xlink:label="lab_itri_EmployeeStockPurchasePlanCompensationExpense_439F0EFB021D7C51B4E2B876E01EDADF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The noncash expense that represents the cost of awards granted to employees as compensation under the employee stock purchase plan.</link:label>
    <link:loc xlink:href="itri-20150930.xsd#itri_EmployeeStockPurchasePlanCompensationExpense" xlink:label="loc_itri_EmployeeStockPurchasePlanCompensationExpense_439F0EFB021D7C51B4E2B876E01EDADF" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShareBasedCompensation_A72C1C6408282AE0B598B876E01E43A4_totalLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_A72C1C6408282AE0B598B876E01E43A4" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total stock-based compensation</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensation_A72C1C6408282AE0B598B876E01E43A4_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_A72C1C6408282AE0B598B876E01E43A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_A72C1C6408282AE0B598B876E01E43A4" xlink:type="locator" />
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    <link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_DEF8F19F341531002E54B876E01E916E_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_DEF8F19F341531002E54B876E01E916E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related tax benefit</link:label>
    <link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_DEF8F19F341531002E54B876E01E916E_label_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_DEF8F19F341531002E54B876E01E916E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Service Share-based Compensation, Tax Benefit from Compensation Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_DEF8F19F341531002E54B876E01E916E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_C4EC8D00D584CEAC7DB5AB2ED10DBECD_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_C4EC8D00D584CEAC7DB5AB2ED10DBECD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenues by Region</link:label>
    <link:label id="lab_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_C4EC8D00D584CEAC7DB5AB2ED10DBECD_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_C4EC8D00D584CEAC7DB5AB2ED10DBECD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Revenues from External Customers and Long-Lived Assets [Table]</link:label>
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    <link:label id="lab_itri_UnitedStatesAndCanadaMember_6599BFBF184888CE59F5AB2ED10D3741_terseLabel_en-US" xlink:label="lab_itri_UnitedStatesAndCanadaMember_6599BFBF184888CE59F5AB2ED10D3741" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">United States and Canada [Member]</link:label>
    <link:label id="lab_itri_UnitedStatesAndCanadaMember_6599BFBF184888CE59F5AB2ED10D3741_label_en-US" xlink:label="lab_itri_UnitedStatesAndCanadaMember_6599BFBF184888CE59F5AB2ED10D3741" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">United States and Canada [Member]</link:label>
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    <link:label id="lab_us-gaap_EMEAMember_CDBD452D4E2225D23AD1AB2ED10DA98D_terseLabel_en-US" xlink:label="lab_us-gaap_EMEAMember_CDBD452D4E2225D23AD1AB2ED10DA98D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Europe, Middle East, and Africa [Member]</link:label>
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    <link:label id="lab_itri_OtherCountriesMember_028FB5F0300DD8958010AB2ED10DC0E0_terseLabel_en-US" xlink:label="lab_itri_OtherCountriesMember_028FB5F0300DD8958010AB2ED10DC0E0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other [Member]</link:label>
    <link:label id="lab_itri_OtherCountriesMember_028FB5F0300DD8958010AB2ED10DC0E0_label_en-US" xlink:label="lab_itri_OtherCountriesMember_028FB5F0300DD8958010AB2ED10DC0E0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Countries [Member]</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryPolicyTextBlock_ED50B15366E782E10ADDBAFC052E33AC" xlink:to="lab_us-gaap_InventoryPolicyTextBlock_ED50B15366E782E10ADDBAFC052E33AC" xlink:type="arc" />
    <link:label id="lab_us-gaap_DerivativesPolicyTextBlock_208DCDD788347D0ACF73BAFC052EF1F7_terseLabel_en-US" xlink:label="lab_us-gaap_DerivativesPolicyTextBlock_208DCDD788347D0ACF73BAFC052EF1F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative Instruments [Policy Text Block]</link:label>
    <link:label id="lab_us-gaap_DerivativesPolicyTextBlock_208DCDD788347D0ACF73BAFC052EF1F7_label_en-US" xlink:label="lab_us-gaap_DerivativesPolicyTextBlock_208DCDD788347D0ACF73BAFC052EF1F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivatives, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DerivativesPolicyTextBlock" xlink:label="loc_us-gaap_DerivativesPolicyTextBlock_208DCDD788347D0ACF73BAFC052EF1F7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DerivativesPolicyTextBlock_208DCDD788347D0ACF73BAFC052EF1F7" xlink:to="lab_us-gaap_DerivativesPolicyTextBlock_208DCDD788347D0ACF73BAFC052EF1F7" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_4C2B413A6461AAB961A0BAFC052EF090_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_4C2B413A6461AAB961A0BAFC052EF090" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, Plant, and Equipment [Policy Text Block]</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_4C2B413A6461AAB961A0BAFC052EF090_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_4C2B413A6461AAB961A0BAFC052EF090" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_4C2B413A6461AAB961A0BAFC052EF090" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_4C2B413A6461AAB961A0BAFC052EF090" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_4C2B413A6461AAB961A0BAFC052EF090" xlink:type="arc" />
    <link:label id="lab_itri_PrepaidDebtFeesPolicyTextBlock_563325853F9CC186F4EBBAFC052E6E19_terseLabel_en-US" xlink:label="lab_itri_PrepaidDebtFeesPolicyTextBlock_563325853F9CC186F4EBBAFC052E6E19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Prepaid Debt Fees [Policy Text Block]</link:label>
    <link:label id="lab_itri_PrepaidDebtFeesPolicyTextBlock_563325853F9CC186F4EBBAFC052E6E19_label_en-US" xlink:label="lab_itri_PrepaidDebtFeesPolicyTextBlock_563325853F9CC186F4EBBAFC052E6E19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Prepaid Debt Fees [Policy Text Block]</link:label>
    <link:label id="lab_itri_PrepaidDebtFeesPolicyTextBlock_563325853F9CC186F4EBBAFC052E6E19_documentation_en-US" xlink:label="lab_itri_PrepaidDebtFeesPolicyTextBlock_563325853F9CC186F4EBBAFC052E6E19" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Prepaid debt fees represent the capitalized direct costs incurred related to the issuance of debt and are recorded as noncurrent assets. These costs are amortized to interest expense over the lives of the respective borrowings, including contingent maturity or call features, using the effective interest method, or straight-line method when associated with a revolving credit facility. When debt is repaid early, the related portion of unamortized prepaid debt fees is written-off and included in interest expense. [Policy Text Block]</link:label>
    <link:loc xlink:href="itri-20150930.xsd#itri_PrepaidDebtFeesPolicyTextBlock" xlink:label="loc_itri_PrepaidDebtFeesPolicyTextBlock_563325853F9CC186F4EBBAFC052E6E19" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itri_PrepaidDebtFeesPolicyTextBlock_563325853F9CC186F4EBBAFC052E6E19" xlink:to="lab_itri_PrepaidDebtFeesPolicyTextBlock_563325853F9CC186F4EBBAFC052E6E19" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationsPolicy_C788BE32E2BD2202DF6ABAFC052EBFE5_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationsPolicy_C788BE32E2BD2202DF6ABAFC052EBFE5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Combinations [Policy Text Block]</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationsPolicy_C788BE32E2BD2202DF6ABAFC052EBFE5_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationsPolicy_C788BE32E2BD2202DF6ABAFC052EBFE5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combinations Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_BusinessCombinationsPolicy" xlink:label="loc_us-gaap_BusinessCombinationsPolicy_C788BE32E2BD2202DF6ABAFC052EBFE5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationsPolicy_C788BE32E2BD2202DF6ABAFC052EBFE5" xlink:to="lab_us-gaap_BusinessCombinationsPolicy_C788BE32E2BD2202DF6ABAFC052EBFE5" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_27B55BAF8545EAD49386BAFC052ED01A_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_27B55BAF8545EAD49386BAFC052ED01A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill and Intangible Assets [Policy Text Block]</link:label>
    <link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_27B55BAF8545EAD49386BAFC052ED01A_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_27B55BAF8545EAD49386BAFC052ED01A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill and Intangible Assets, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_27B55BAF8545EAD49386BAFC052ED01A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_27B55BAF8545EAD49386BAFC052ED01A" xlink:to="lab_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_27B55BAF8545EAD49386BAFC052ED01A" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesPolicyTextBlock_080CD8209592ABCB9B71BAFC052E595E_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesPolicyTextBlock_080CD8209592ABCB9B71BAFC052E595E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contingencies [Policy Text Block]</link:label>
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesPolicyTextBlock_080CD8209592ABCB9B71BAFC052E595E_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesPolicyTextBlock_080CD8209592ABCB9B71BAFC052E595E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommitmentsAndContingenciesPolicyTextBlock" xlink:label="loc_us-gaap_CommitmentsAndContingenciesPolicyTextBlock_080CD8209592ABCB9B71BAFC052E595E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesPolicyTextBlock_080CD8209592ABCB9B71BAFC052E595E" xlink:to="lab_us-gaap_CommitmentsAndContingenciesPolicyTextBlock_080CD8209592ABCB9B71BAFC052E595E" xlink:type="arc" />
    <link:label id="lab_us-gaap_CompensationRelatedCostsPolicyTextBlock_651FC1D281EAF0CBA7C1BAFC052E20BB_terseLabel_en-US" xlink:label="lab_us-gaap_CompensationRelatedCostsPolicyTextBlock_651FC1D281EAF0CBA7C1BAFC052E20BB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bonus and Profit Sharing [Policy Text Block]</link:label>
    <link:label id="lab_us-gaap_CompensationRelatedCostsPolicyTextBlock_651FC1D281EAF0CBA7C1BAFC052E20BB_label_en-US" xlink:label="lab_us-gaap_CompensationRelatedCostsPolicyTextBlock_651FC1D281EAF0CBA7C1BAFC052E20BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Compensation Related Costs, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CompensationRelatedCostsPolicyTextBlock" xlink:label="loc_us-gaap_CompensationRelatedCostsPolicyTextBlock_651FC1D281EAF0CBA7C1BAFC052E20BB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CompensationRelatedCostsPolicyTextBlock_651FC1D281EAF0CBA7C1BAFC052E20BB" xlink:to="lab_us-gaap_CompensationRelatedCostsPolicyTextBlock_651FC1D281EAF0CBA7C1BAFC052E20BB" xlink:type="arc" />
    <link:label id="lab_itri_WarrantyPolicyTextBlock_E4431B18210E43963A9DBAFC052ED791_terseLabel_en-US" xlink:label="lab_itri_WarrantyPolicyTextBlock_E4431B18210E43963A9DBAFC052ED791" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Warranty [Policy Text Block]</link:label>
    <link:label id="lab_itri_WarrantyPolicyTextBlock_E4431B18210E43963A9DBAFC052ED791_label_en-US" xlink:label="lab_itri_WarrantyPolicyTextBlock_E4431B18210E43963A9DBAFC052ED791" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Warranty [Policy Text Block]</link:label>
    <link:label id="lab_itri_WarrantyPolicyTextBlock_E4431B18210E43963A9DBAFC052ED791_documentation_en-US" xlink:label="lab_itri_WarrantyPolicyTextBlock_E4431B18210E43963A9DBAFC052ED791" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of accounting policy for all warranty types including the methodology for measuring the liability. [Policy Text Block]</link:label>
    <link:loc xlink:href="itri-20150930.xsd#itri_WarrantyPolicyTextBlock" xlink:label="loc_itri_WarrantyPolicyTextBlock_E4431B18210E43963A9DBAFC052ED791" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itri_WarrantyPolicyTextBlock_E4431B18210E43963A9DBAFC052ED791" xlink:to="lab_itri_WarrantyPolicyTextBlock_E4431B18210E43963A9DBAFC052ED791" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock_2F42D3FC5EC0A8C6CA48BAFC052E12EE_terseLabel_en-US" xlink:label="lab_us-gaap_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock_2F42D3FC5EC0A8C6CA48BAFC052E12EE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restructuring and Asset Impairments [Policy Text Block]</link:label>
    <link:label id="lab_us-gaap_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock_2F42D3FC5EC0A8C6CA48BAFC052E12EE_label_en-US" xlink:label="lab_us-gaap_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock_2F42D3FC5EC0A8C6CA48BAFC052E12EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Costs Associated with Exit or Disposal Activities or Restructurings, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock" xlink:label="loc_us-gaap_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock_2F42D3FC5EC0A8C6CA48BAFC052E12EE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock_2F42D3FC5EC0A8C6CA48BAFC052E12EE" xlink:to="lab_us-gaap_CostsAssociatedWithExitOrDisposalActivitiesOrRestructuringsPolicyTextBlock_2F42D3FC5EC0A8C6CA48BAFC052E12EE" xlink:type="arc" />
    <link:label id="lab_us-gaap_PensionAndOtherPostretirementPlansPensionsPolicy_C94136D10AC1472AFB33BAFC052E05D8_terseLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementPlansPensionsPolicy_C94136D10AC1472AFB33BAFC052E05D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Defined Benefit Pension Plans [Policy Text Block]</link:label>
    <link:label id="lab_us-gaap_PensionAndOtherPostretirementPlansPensionsPolicy_C94136D10AC1472AFB33BAFC052E05D8_label_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementPlansPensionsPolicy_C94136D10AC1472AFB33BAFC052E05D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pension and Other Postretirement Plans, Pensions, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PensionAndOtherPostretirementPlansPensionsPolicy" xlink:label="loc_us-gaap_PensionAndOtherPostretirementPlansPensionsPolicy_C94136D10AC1472AFB33BAFC052E05D8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PensionAndOtherPostretirementPlansPensionsPolicy_C94136D10AC1472AFB33BAFC052E05D8" xlink:to="lab_us-gaap_PensionAndOtherPostretirementPlansPensionsPolicy_C94136D10AC1472AFB33BAFC052E05D8" xlink:type="arc" />
    <link:label id="lab_itri_ShareRepurchasePolicyPolicyTextBlock_628A3BB1EB6F0B17DC39BAFC052EAF02_terseLabel_en-US" xlink:label="lab_itri_ShareRepurchasePolicyPolicyTextBlock_628A3BB1EB6F0B17DC39BAFC052EAF02" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share Repurchase Plan [Policy Text Block]</link:label>
    <link:label id="lab_itri_ShareRepurchasePolicyPolicyTextBlock_628A3BB1EB6F0B17DC39BAFC052EAF02_label_en-US" xlink:label="lab_itri_ShareRepurchasePolicyPolicyTextBlock_628A3BB1EB6F0B17DC39BAFC052EAF02" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Repurchase Policy [Policy Text Block]</link:label>
    <link:label id="lab_itri_ShareRepurchasePolicyPolicyTextBlock_628A3BB1EB6F0B17DC39BAFC052EAF02_documentation_en-US" xlink:label="lab_itri_ShareRepurchasePolicyPolicyTextBlock_628A3BB1EB6F0B17DC39BAFC052EAF02" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Describes the company's accounting policy related to share repurchases under a program authorized by its Board of Directors. Share repurchases are made in the open market or in privately negotiated transactions and in accordance with applicable securities and state laws.[Policy Text Block]</link:label>
    <link:loc xlink:href="itri-20150930.xsd#itri_ShareRepurchasePolicyPolicyTextBlock" xlink:label="loc_itri_ShareRepurchasePolicyPolicyTextBlock_628A3BB1EB6F0B17DC39BAFC052EAF02" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itri_ShareRepurchasePolicyPolicyTextBlock_628A3BB1EB6F0B17DC39BAFC052EAF02" xlink:to="lab_itri_ShareRepurchasePolicyPolicyTextBlock_628A3BB1EB6F0B17DC39BAFC052EAF02" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueRecognitionPolicyTextBlock_E3690B1F1D416F51CCF3BAFC052E7BBE_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRecognitionPolicyTextBlock_E3690B1F1D416F51CCF3BAFC052E7BBE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue Recognition [Policy Text Block]</link:label>
    <link:label id="lab_us-gaap_RevenueRecognitionPolicyTextBlock_E3690B1F1D416F51CCF3BAFC052E7BBE_label_en-US" xlink:label="lab_us-gaap_RevenueRecognitionPolicyTextBlock_E3690B1F1D416F51CCF3BAFC052E7BBE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue Recognition, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:label="loc_us-gaap_RevenueRecognitionPolicyTextBlock_E3690B1F1D416F51CCF3BAFC052E7BBE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueRecognitionPolicyTextBlock_E3690B1F1D416F51CCF3BAFC052E7BBE" xlink:to="lab_us-gaap_RevenueRecognitionPolicyTextBlock_E3690B1F1D416F51CCF3BAFC052E7BBE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_892C9A22845725A522BDBAFC052E5AB4_terseLabel_en-US" xlink:label="lab_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_892C9A22845725A522BDBAFC052E5AB4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Product and Software Development Costs [Policy Text Block]</link:label>
    <link:label id="lab_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_892C9A22845725A522BDBAFC052E5AB4_label_en-US" xlink:label="lab_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_892C9A22845725A522BDBAFC052E5AB4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Research, Development, and Computer Software, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock" xlink:label="loc_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_892C9A22845725A522BDBAFC052E5AB4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_892C9A22845725A522BDBAFC052E5AB4" xlink:to="lab_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_892C9A22845725A522BDBAFC052E5AB4" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_B4DE422136C9781E25B5BAFC052E0651_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_B4DE422136C9781E25B5BAFC052E0651" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-based Compensation [Policy Text Block]</link:label>
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    <link:label id="lab_us-gaap_ShareBasedCompensation_7D31EE0635A99839B7B0CFB40B94F036_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_7D31EE0635A99839B7B0CFB40B94F036" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-based compensation</link:label>
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    <link:label id="lab_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_24EA4BF063EE6FA0871ECFB40B95D0E4_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_24EA4BF063EE6FA0871ECFB40B95D0E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Deferred Income Taxes</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredIncomeTaxes" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_24EA4BF063EE6FA0871ECFB40B95D0E4" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RestructuringCosts_5E9C36D7D90D2AC85961CFB40B95FFC8_terseLabel_en-US" xlink:label="lab_us-gaap_RestructuringCosts_5E9C36D7D90D2AC85961CFB40B95FFC8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restructuring, non-cash</link:label>
    <link:label id="lab_us-gaap_RestructuringCosts_5E9C36D7D90D2AC85961CFB40B95FFC8_label_en-US" xlink:label="lab_us-gaap_RestructuringCosts_5E9C36D7D90D2AC85961CFB40B95FFC8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Costs</link:label>
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    <link:label id="lab_us-gaap_OtherNoncashIncomeExpense_3F012D79B50DCEBA4484CFB40B953ABC_label_en-US" xlink:label="lab_us-gaap_OtherNoncashIncomeExpense_3F012D79B50DCEBA4484CFB40B953ABC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Noncash Income (Expense)</link:label>
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    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherCurrentAssets_7663BDF3D62A010D3C74CFB40B95C06D_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherCurrentAssets_7663BDF3D62A010D3C74CFB40B95C06D" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Other current assets</link:label>
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    <link:loc xlink:href="itri-20150930.xsd#itri_ConsignedInventoryDomain" xlink:label="loc_itri_ConsignedInventoryDomain_0DBFC61308FA63411AFEB876E154019F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itri_ConsignedInventoryDomain_0DBFC61308FA63411AFEB876E154019F" xlink:to="lab_itri_ConsignedInventoryDomain_0DBFC61308FA63411AFEB876E154019F" xlink:type="arc" />
    <link:label id="lab_itri_ConsignedInventoryLineItems_2773B263B1159691DEABB876E154AB23_label_en-US" xlink:label="lab_itri_ConsignedInventoryLineItems_2773B263B1159691DEABB876E154AB23" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consigned inventory [Line Items]</link:label>
    <link:label id="lab_itri_ConsignedInventoryLineItems_2773B263B1159691DEABB876E154AB23_documentation_en-US" xlink:label="lab_itri_ConsignedInventoryLineItems_2773B263B1159691DEABB876E154AB23" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Consigned inventory [Line Items]</link:label>
    <link:loc xlink:href="itri-20150930.xsd#itri_ConsignedInventoryLineItems" xlink:label="loc_itri_ConsignedInventoryLineItems_2773B263B1159691DEABB876E154AB23" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itri_ConsignedInventoryLineItems_2773B263B1159691DEABB876E154AB23" xlink:to="lab_itri_ConsignedInventoryLineItems_2773B263B1159691DEABB876E154AB23" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherInventoryMaterialsSuppliesAndMerchandiseUnderConsignment_1157D6E597D918429827B876E154E0D4_label_en-US" xlink:label="lab_us-gaap_OtherInventoryMaterialsSuppliesAndMerchandiseUnderConsignment_1157D6E597D918429827B876E154E0D4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Inventory, Materials, Supplies and Merchandise under Consignment, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherInventoryMaterialsSuppliesAndMerchandiseUnderConsignment" xlink:label="loc_us-gaap_OtherInventoryMaterialsSuppliesAndMerchandiseUnderConsignment_1157D6E597D918429827B876E154E0D4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherInventoryMaterialsSuppliesAndMerchandiseUnderConsignment_1157D6E597D918429827B876E154E0D4" xlink:to="lab_us-gaap_OtherInventoryMaterialsSuppliesAndMerchandiseUnderConsignment_1157D6E597D918429827B876E154E0D4" xlink:type="arc" />
    <link:label id="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_4F049CD661C6CA1690CFB876E1403A28_verboseLabel_en-US" xlink:label="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_4F049CD661C6CA1690CFB876E1403A28" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Fair Values Of Financial Instruments by Balance Sheet Grouping [Table Text Block]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTextBlock" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTextBlock_4F049CD661C6CA1690CFB876E1403A28" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTextBlock_4F049CD661C6CA1690CFB876E1403A28" xlink:to="lab_us-gaap_FairValueByBalanceSheetGroupingTextBlock_4F049CD661C6CA1690CFB876E1403A28" xlink:type="arc" />
    <link:label id="lab_itri_LongTermPerformanceRestrictedStockAwardMember_AAB50C503B09D75532B4CAED2DD17698_terseLabel_en-US" xlink:label="lab_itri_LongTermPerformanceRestrictedStockAwardMember_AAB50C503B09D75532B4CAED2DD17698" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long Term Performance Restricted Stock Award [Member]</link:label>
    <link:loc xlink:href="itri-20150930.xsd#itri_LongTermPerformanceRestrictedStockAwardMember" xlink:label="loc_itri_LongTermPerformanceRestrictedStockAwardMember_AAB50C503B09D75532B4CAED2DD17698" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itri_LongTermPerformanceRestrictedStockAwardMember_AAB50C503B09D75532B4CAED2DD17698" xlink:to="lab_itri_LongTermPerformanceRestrictedStockAwardMember_AAB50C503B09D75532B4CAED2DD17698" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_30F72DD254F6484B9EEFCAED2DD18A98_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_30F72DD254F6484B9EEFCAED2DD18A98" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dividend yield(1)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_30F72DD254F6484B9EEFCAED2DD18A98_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_30F72DD254F6484B9EEFCAED2DD18A98" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_30F72DD254F6484B9EEFCAED2DD18A98" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_30F72DD254F6484B9EEFCAED2DD18A98" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_30F72DD254F6484B9EEFCAED2DD18A98" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_36A7F5C9CFAB6A96DD74CAED2DD1A29E_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_36A7F5C9CFAB6A96DD74CAED2DD1A29E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected volatility(1)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_36A7F5C9CFAB6A96DD74CAED2DD1A29E_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_36A7F5C9CFAB6A96DD74CAED2DD1A29E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_36A7F5C9CFAB6A96DD74CAED2DD1A29E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_36A7F5C9CFAB6A96DD74CAED2DD1A29E" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_36A7F5C9CFAB6A96DD74CAED2DD1A29E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_71DAA9CC02CF5D67C013CAED2DD125CE_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_71DAA9CC02CF5D67C013CAED2DD125CE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Risk-free interest rate(1)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_71DAA9CC02CF5D67C013CAED2DD125CE_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_71DAA9CC02CF5D67C013CAED2DD125CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_71DAA9CC02CF5D67C013CAED2DD125CE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_71DAA9CC02CF5D67C013CAED2DD125CE" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_71DAA9CC02CF5D67C013CAED2DD125CE" xlink:type="arc" />
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_3A5F869E3AAC25274F1FCAED2DD17163_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_3A5F869E3AAC25274F1FCAED2DD17163" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected term (years)(1)</link:label>
    <link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_3A5F869E3AAC25274F1FCAED2DD17163_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_3A5F869E3AAC25274F1FCAED2DD17163" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_3A5F869E3AAC25274F1FCAED2DD17163" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_3A5F869E3AAC25274F1FCAED2DD17163" xlink:to="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_3A5F869E3AAC25274F1FCAED2DD17163" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0B5DF926C36D8645D352CAED2DD1E179_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0B5DF926C36D8645D352CAED2DD1E179" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average fair value(1)</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0B5DF926C36D8645D352CAED2DD1E179_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0B5DF926C36D8645D352CAED2DD1E179" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0B5DF926C36D8645D352CAED2DD1E179" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0B5DF926C36D8645D352CAED2DD1E179" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0B5DF926C36D8645D352CAED2DD1E179" xlink:type="arc" />
    <link:label id="lab_us-gaap_VestingAxis_5557D8873ADFFC2373F0B5CB0D6F416C_terseLabel_en-US" xlink:label="lab_us-gaap_VestingAxis_5557D8873ADFFC2373F0B5CB0D6F416C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Vesting [Axis]</link:label>
    <link:label id="lab_us-gaap_VestingAxis_5557D8873ADFFC2373F0B5CB0D6F416C_label_en-US" xlink:label="lab_us-gaap_VestingAxis_5557D8873ADFFC2373F0B5CB0D6F416C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Vesting [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_VestingAxis" xlink:label="loc_us-gaap_VestingAxis_5557D8873ADFFC2373F0B5CB0D6F416C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VestingAxis_5557D8873ADFFC2373F0B5CB0D6F416C" xlink:to="lab_us-gaap_VestingAxis_5557D8873ADFFC2373F0B5CB0D6F416C" xlink:type="arc" />
    <link:label id="lab_us-gaap_VestingDomain_DED13437B1A0008E310EB5CB0D6FB4F6_terseLabel_en-US" xlink:label="lab_us-gaap_VestingDomain_DED13437B1A0008E310EB5CB0D6FB4F6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Vesting [Domain]</link:label>
    <link:label id="lab_us-gaap_VestingDomain_DED13437B1A0008E310EB5CB0D6FB4F6_label_en-US" xlink:label="lab_us-gaap_VestingDomain_DED13437B1A0008E310EB5CB0D6FB4F6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Vesting [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_VestingDomain" xlink:label="loc_us-gaap_VestingDomain_DED13437B1A0008E310EB5CB0D6FB4F6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VestingDomain_DED13437B1A0008E310EB5CB0D6FB4F6" xlink:to="lab_us-gaap_VestingDomain_DED13437B1A0008E310EB5CB0D6FB4F6" xlink:type="arc" />
    <link:label id="lab_itri_VestedAndReleasedMember_248E4C65465800C3993CB5CB0D6F8460_terseLabel_en-US" xlink:label="lab_itri_VestedAndReleasedMember_248E4C65465800C3993CB5CB0D6F8460" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Vested and Released [Member]</link:label>
    <link:label id="lab_itri_VestedAndReleasedMember_248E4C65465800C3993CB5CB0D6F8460_label_en-US" xlink:label="lab_itri_VestedAndReleasedMember_248E4C65465800C3993CB5CB0D6F8460" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Vested and Released [Member]</link:label>
    <link:label id="lab_itri_VestedAndReleasedMember_248E4C65465800C3993CB5CB0D6F8460_documentation_en-US" xlink:label="lab_itri_VestedAndReleasedMember_248E4C65465800C3993CB5CB0D6F8460" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Vested and Released [Member]</link:label>
    <link:loc xlink:href="itri-20150930.xsd#itri_VestedAndReleasedMember" xlink:label="loc_itri_VestedAndReleasedMember_248E4C65465800C3993CB5CB0D6F8460" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itri_VestedAndReleasedMember_248E4C65465800C3993CB5CB0D6F8460" xlink:to="lab_itri_VestedAndReleasedMember_248E4C65465800C3993CB5CB0D6F8460" xlink:type="arc" />
    <link:label id="lab_itri_VestedButNotReleasedMember_4D8257241AB160012394B5CB0D6FE374_terseLabel_en-US" xlink:label="lab_itri_VestedButNotReleasedMember_4D8257241AB160012394B5CB0D6FE374" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Vested but Not Released [Member]</link:label>
    <link:label id="lab_itri_VestedButNotReleasedMember_4D8257241AB160012394B5CB0D6FE374_label_en-US" xlink:label="lab_itri_VestedButNotReleasedMember_4D8257241AB160012394B5CB0D6FE374" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Vested but Not Released [Member]</link:label>
    <link:label id="lab_itri_VestedButNotReleasedMember_4D8257241AB160012394B5CB0D6FE374_documentation_en-US" xlink:label="lab_itri_VestedButNotReleasedMember_4D8257241AB160012394B5CB0D6FE374" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Vested but not released due to contractual agreement or statutory requirement.</link:label>
    <link:loc xlink:href="itri-20150930.xsd#itri_VestedButNotReleasedMember" xlink:label="loc_itri_VestedButNotReleasedMember_4D8257241AB160012394B5CB0D6FE374" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itri_VestedButNotReleasedMember_4D8257241AB160012394B5CB0D6FE374" xlink:to="lab_itri_VestedButNotReleasedMember_4D8257241AB160012394B5CB0D6FE374" xlink:type="arc" />
    <link:label id="lab_itri_ExpectedToVestMember_799867C44EE6524033F4B5CB0D6F556F_terseLabel_en-US" xlink:label="lab_itri_ExpectedToVestMember_799867C44EE6524033F4B5CB0D6F556F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected to Vest [Member]</link:label>
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    <link:label id="lab_us-gaap_CreditFacilityDomain_10554E98163BE7AA3547CB1A887C3B64_label_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain_10554E98163BE7AA3547CB1A887C3B64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Facility [Domain]</link:label>
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    <link:label id="lab_itri_AlternateBaseRate1Member_8F29C8FFEF40D9729FEACB1A887C274A_label_en-US" xlink:label="lab_itri_AlternateBaseRate1Member_8F29C8FFEF40D9729FEACB1A887C274A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Alternate base rate (1) [Member]</link:label>
    <link:label id="lab_itri_AlternateBaseRate1Member_8F29C8FFEF40D9729FEACB1A887C274A_documentation_en-US" xlink:label="lab_itri_AlternateBaseRate1Member_8F29C8FFEF40D9729FEACB1A887C274A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The first of three alternate base rates under a credit facility agreement.</link:label>
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    <link:label id="lab_itri_AlternateBaseRate2Member_E833A1CE81EA81AA53C4CB1A887C2780_terseLabel_en-US" xlink:label="lab_itri_AlternateBaseRate2Member_E833A1CE81EA81AA53C4CB1A887C2780" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Alternate base rate (2) [Member]</link:label>
    <link:label id="lab_itri_AlternateBaseRate2Member_E833A1CE81EA81AA53C4CB1A887C2780_label_en-US" xlink:label="lab_itri_AlternateBaseRate2Member_E833A1CE81EA81AA53C4CB1A887C2780" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Alternate base rate (2) [Member]</link:label>
    <link:label id="lab_itri_AlternateBaseRate2Member_E833A1CE81EA81AA53C4CB1A887C2780_documentation_en-US" xlink:label="lab_itri_AlternateBaseRate2Member_E833A1CE81EA81AA53C4CB1A887C2780" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The second of three alternate base rates under a credit facility agreement.</link:label>
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    <link:label id="lab_itri_AlternateBaseRate3Member_9E34AED092CF11427AA7CB1A887C68F3_terseLabel_en-US" xlink:label="lab_itri_AlternateBaseRate3Member_9E34AED092CF11427AA7CB1A887C68F3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Alternate base rate (3) [Member]</link:label>
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