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    <import namespace="http://fasb.org/srt/2023" schemaLocation="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd" />
    <import namespace="http://fasb.org/srt-types/2023" schemaLocation="https://xbrl.fasb.org/srt/2023/elts/srt-types-2023.xsd" />
    <element id="LTRX_PrepaidSalesCommissionsMember" name="PrepaidSalesCommissionsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_EmbeddedIoTSolutionsMember" name="EmbeddedIoTSolutionsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_IoTSystemSolutionsMember" name="IoTSystemSolutionsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_SoftwareAndServicesMember" name="SoftwareAndServicesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_AsiaPacificJapanMember" name="AsiaPacificJapanMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_ThirdAmendmentMember" name="ThirdAmendmentMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_SiliconValleyBankMember" name="SiliconValleyBankMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_CreditFacilitiesMember" name="CreditFacilitiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_SeniorCreditandMezzanineCreditFacilitiesMember" name="SeniorCreditandMezzanineCreditFacilitiesMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_PerformanceStockUnitsMember" name="PerformanceStockUnitsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_EmployeeStockPurchasePlanMember" name="EmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_StockOptionsMember" name="StockOptionsMember" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_FairValueRemeasurementOfEarnoutConsideration" name="FairValueRemeasurementOfEarnoutConsideration" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_AmortizationOfPurchasedIntangibleAssets" name="AmortizationOfPurchasedIntangibleAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_IncreaseDecreaseNontradeReceivables" name="IncreaseDecreaseNontradeReceivables" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_IncreaseDecreaseInLeaseRightOfUseAsset" name="IncreaseDecreaseInLeaseRightOfUseAsset" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_RepaymentsOfTermLoans" name="RepaymentsOfTermLoans" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_CompanyPolicyTextBlock" name="CompanyPolicyTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_ScheduleOfPercentageTotalNetRevenueTableTextBlock" name="ScheduleOfPercentageTotalNetRevenueTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_ChangesInDeferredRevenueTableTextBlock" name="ChangesInDeferredRevenueTableTextBlock" nillable="true" xbrli:periodType="duration" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_BusinessCombinationContingentConsiderationRemeasurementEstimates" name="BusinessCombinationContingentConsiderationRemeasurementEstimates" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_BusinessCombinationContingentConsiderationPayments" name="BusinessCombinationContingentConsiderationPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_AccruedVariableConsideration" name="AccruedVariableConsideration" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_CustomerDepositsAndRefunds" name="CustomerDepositsAndRefunds" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_AccruedRawMaterialsPurchases" name="AccruedRawMaterialsPurchases" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_OperatingAndFinanceLeaseLiability" name="OperatingAndFinanceLeaseLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_WarrantyReserves" name="WarrantyReserves" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_LongTermOtherLiabilities" name="LongTermOtherLiabilities" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_OperatingLeasesLiabilityNoncurrent" name="OperatingLeasesLiabilityNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_ChargedToCostOfRevenue" name="ChargedToCostOfRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="LTRX_MinimumLiquidityRequirement" name="MinimumLiquidityRequirement" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
</schema>
