2BSTN-JT-362wireless calling system

CoveredEquipmentAttestationLetter ForCertificationServiceintheUSA FederalCommunicationsCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoSection2.911(d)(5)(i)-(ii)oftheCommission’sRules(47C.F.R.)weattestas followsfortheproductlistedbelow: FCCIDModelname 2BSTN-JT-362JT-362,JT-362-1,JT-362-2,JT-362-3JT-362- 4,JT-362-5,JT-362-6,JT-362-7,JT-362-8,JT- 362-9,JT-362-10,JT-362-11,JT-362-12,JT- 362-13,JT-362-14,JT-362-15,JT-362-16,JT- 362-17,JT-362-18,JT-362-19,JT-362-20,JT- 362-21,JT-362-22,JT-362-23,JT-362-24,JT- 362-25,JT-362-26,JT-362-27,JT-362-28,JT- 362-29,JT-362-30,JT-362-31,JT-362-32,JT- 362-33JT-362-34,JT-362-35,JT-362-36,JT- 362-37,JT-362-38,JT-362-39,JT-362-40,JT- 362-41,JT-362-42,JT-362-43,JT-362-44,JT- 362-45,JT-362-46,JT-362-47,JT-362-48,JT- 362-49,JT-362-50,JT-362-51,JT-362-52,JT- 362-53,JT-362-54,JT-362-55,JT-362-56,JT- 362-57,JT-362-58,JT-362-59 We, Applicant CompanyName:ChongqingDaomadanTechnologyCo.,Ltd. Address:No.688,XiemaStreet,XiemaStreet,Beibei District,Chongqing(XiemaExpansionPark, ChongqingHi-TechZone Phone:15730379032 certifythattheequipmentforwhichauthorizationissoughtisnot“covered”equipment prohibitedfromreceivinganequipmentauthorizationpursuanttosection2.903oftheFCC rules.Thisincludesthecybersecurityandanti-virussoftwareproducedorprovidedby KasperskyLab,Inc.oranyofistsuccessorsandassignees. Wecertifythat,asofthedateofthefilingoftheapplication,theapplicantisnotidentified ontheCoveredListasanentityproducing“covered”equipment. Ifyouhaveanyquestions,pleasefeelfreetocontactusattheaddressshownbelow. Sincerely, 2025-11-20 SignatureDate PrintedNameofSignee:JuhuaZhou Company:ChongqingDaomadan TechnologyCo.,Ltd. Phone:15730379032 Email:[email protected] Address:No.688,XiemaStreet,Xiema Street,BeibeiDistrict,Chongqing(Xiema ExpansionPark,ChongqingHi-TechZone Fax:N/A

ChongqingDaomadanTechnologyCo.,Ltd. No.688,XiemaStreet,XiemaStreet,BeibeiDistrict,Chongqing(XiemaExpansionPark, ChongqingHi-TechZone Date: 2025-11-20 FCCID: 2BSTN-JT-362 ModelNumber: JT-362,JT-362-1,JT-362-2,JT-362-3JT-362-4,JT-362-5,JT-362-6,JT-362-7,JT-362-8,JT-362-9,JT-3 62-10,JT-362-11,JT-362-12,JT-362-13,JT-362-14,JT-362-15,JT-362-16,JT-362-17,JT-362-18,JT-3 62-19,JT-362-20,JT-362-21,JT-362-22,JT-362-23,JT-362-24,JT-362-25,JT-362-26,JT-362-27,JT-3 62-28,JT-362-29,JT-362-30,JT-362-31,JT-362-32,JT-362-33JT-362-34,JT-362-35,JT-362-36,JT-36 2-37,JT-362-38,JT-362-39,JT-362-40,JT-362-41,JT-362-42,JT-362-43,JT-362-44,JT-362-45,JT-36 2-46,JT-362-47,JT-362-48,JT-362-49,JT-362-50,JT-362-51,JT-362-52,JT-362-53,JT-362-54,JT-36 2-55,JT-362-56,JT-362-57,JT-362-58,JT-362-59 To:FederalCommunicationCommission AuthorizationandEvaluationDivision7435OaklandMillsRoad Columbia,MD21048 ToWhomItMayConcern, We,ChongqingDaomadanTechnologyCo.,Ltd.herebydeclarethatourproduct (wirelesscallingsystem） ModelNumber:JT-362,JT-362-1,JT-362-2,JT-362-3JT-362-4,JT-362-5,JT-362-6,JT-362-7,JT-362 -8,JT-362-9,JT-362-10,JT-362-11,JT-362-12,JT-362-13,JT-362-14,JT-362-15,JT-362-16,JT-362-1 7,JT-362-18,JT-362-19,JT-362-20,JT-362-21,JT-362-22,JT-362-23,JT-362-24,JT-362-25,JT-362-2 6,JT-362-27,JT-362-28,JT-362-29,JT-362-30,JT-362-31,JT-362-32,JT-362-33JT-362-34,JT-362-35, JT-362-36,JT-362-37,JT-362-38,JT-362-39,JT-362-40,JT-362-41,JT-362-42,JT-362-43,JT-362-44, JT-362-45,JT-362-46,JT-362-47,JT-362-48,JT-362-49,JT-362-50,JT-362-51,JT-362-52,JT-362-53, JT-362-54,JT-362-55,JT-362-56,JT-362-57,JT-362-58,JT-362-59,theyare electricalidentical,the Schematic,PCBlayout,structureandsoftwarearesame,onlythedifferenceisthemodelnamefor marketpurpose. Sincerely, (Signed) Name/Title:JuhuaZhou/operationsdirector Company:ChongqingDaomadanTechnologyCo.,Ltd. Address:No.688,XiemaStreet,XiemaStreet,BeibeiDistrict,Chongqing(Xiema ExpansionPark,ChongqingHi-TechZone Phone:15730379032 FaxNumber:N/A E-Mail:[email protected]

ConfidentialityRequestLetter ForCertificationServiceintheUSA FederalCommunicationCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoParagraphs§0.457and0.459oftheCommission’sRules(47C.F.R.)andSection §552(b)(4)oftheFreedomofInformationAct,werequestconfidentialityforthe documentationofthefollowingproducts: FCCIDModelname 2BSTN-JT-362JT-362,JT-362-1,JT-362-2,JT-362-3JT-362-4,JT- 362-5,JT-362-6,JT-362-7,JT-362-8,JT-362-9,JT- 362-10,JT-362-11,JT-362-12,JT-362-13,JT-362- 14,JT-362-15,JT-362-16,JT-362-17,JT-362- 18,JT-362-19,JT-362-20,JT-362-21,JT-362- 22,JT-362-23,JT-362-24,JT-362-25,JT-362- 26,JT-362-27,JT-362-28,JT-362-29,JT-362- 30,JT-362-31,JT-362-32,JT-362-33JT-362- 34,JT-362-35,JT-362-36,JT-362-37,JT-362- 38,JT-362-39,JT-362-40,JT-362-41,JT-362- 42,JT-362-43,JT-362-44,JT-362-45,JT-362- 46,JT-362-47,JT-362-48,JT-362-49,JT-362- 50,JT-362-51,JT-362-52,JT-362-53,JT-362- 54,JT-362-55,JT-362-56,JT-362-57,JT-362- 58,JT-362-59 Fortheproductslistedabove,werequestpermanentconfidentialityforallapplicable exhibitsasthereare: theOperationalDescription  theBlockDiagram theSchematics Theabovelistedexhibitscontaintradesecretsandproprietaryinformationthatcouldbeof benefittoourcompetitors. Ifyouhaveanyquestions,pleasefeelfreetocontactusattheaddressshownbelow. Sincerely, 2025-11-20 SignatureDate PrintedNameofSignee/Title:JuhuaZhou/operationsdirector Company:ChongqingDaomadanTechnologyCo.,Ltd. Address:No.688,XiemaStreet,XiemaStreet,BeibeiDistrict,Chongqing(XiemaExpansion Park,ChongqingHi-TechZone Phone:15730379032 Fax:N/A Email:[email protected]

ReportNo.:CISRR251011026 Page:21of25 8.EXTERNALANDINTERNALPHOTOS 7.1Externalphotos ReportNo.:CISRR251011026 Page:22of25 ReportNo.:CISRR251011026 Page:23of25

Size:10mm*10m Label m FCC ID:2BSTN-JT-362 LabelLocation

ReportNo.:CISRR251011026 Page:24of25 7.2Internalphotos ANT ReportNo.:CISRR251011026 Page:25of25

RFExposureevaluation FCCID ProductNamewirelesscallingsystem Model/Type reference JT-362 ExposurecategoryGeneralpopulation/uncontrolledenvironment EUTTypeProductionUnit DeviceTypePortableDevice 1.Reference ANSIC95.1–1999:IEEEStandardforSafetyLevelswithRespecttoHumanExposureto RadioFrequencyElectromagneticFields,3kHzto300GHz. FCCKDBpublication447498D01GeneralRFExposureGuidancev06:MobileandPortable DevicesRFExposureProceduresandEquipmentAuthorizationPolicies. FCCCFR47part11.1310:Radiofrequencyradiationexposurelimits. FCCCFR47part22.1093:Radiofrequencyradiationexposureevaluation:portabledevices 2.Requirement AccordingtoKDB447498D01GeneralRFExposureGuidancev06Section4.3.1Standalone SARtestexclusionconsiderations:“UnlessspecificallyrequiredbythepublishedRFexposure KDBprocedures,standalone1-gheadorbodyand10-gextremitySARevaluationforgeneral populationexposureconditions,bymeasurementornumericalsimulation,isnotrequired whenthecorrespondingSARTestExclusionThresholdcondition,listedbelow,issatisfied. Thesetestexclusionconditionsarebasedonsource-basedtime-averagedmaximum conductedoutputpoweroftheRFchannelrequiringevaluation,adjustedfortune-uptolerance, andtheminimumtestseparationdistancerequiredfortheexposureconditions.22The minimumtestseparationdistanceisdeterminedbythesmallestdistancefromtheantenna andradiatingstructuresoroutersurfaceofthedevice,accordingtothehostformfactor, exposureconditionsandplatformrequirements,toanypartofthebodyorextremityofauser orbystander(see5)ofsection4.1).ToqualifyforSARtestexclusion,thetestseparation distancesappliedmustbefullyexplainedandjustifiedbytheoperatingconfigurationsand exposureconditionsofthetransmitterandapplicablehostplatformrequirements,typicallyin theSARmeasurementorSARanalysisreport,accordingtotherequiredpublishedRF exposureKDBprocedures.WhennootherRFexposuretestingorreportingisrequired,a statementofjustificationandcompliancemustbeincludedintheequipmentapproval,inlieuof theSARreport,toqualifyfortheSARtestexclusion.Whenrequired,thedevicespecific conditionsdescribedintheotherpublishedRFexposureKDBproceduresmustbesatisfied beforeapplyingtheseSARtestexclusionprovisions;forexample,handheldPTTtwo-way radios,handsets,laptops&tabletsetc.23” [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f(GHz)]≤3.0for1-gSARand≤7.5for10-gextremitySAR,where: •f(GHz)istheRFchanneltransmitfrequencyinGHz •PoweranddistanceareroundedtothenearestmWandmmbeforecalculation •Theresultisroundedtoonedecimalplaceforcomparison 2BSTN-JT-362 •3.0and7.5arereferredtoasthenumericthresholdsinthestep2below Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50 mmandfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmaccordingto5)insection4.1isappliedto determineSARtestexclusion. Whenoneofthefollowingtestexclusionconditionsissatisfiedforallcombinationsof simultaneoustransmissionconfigurations,furtherequipmentapprovalisnotrequiredto incorporatetransmittermodulesinhostdevicesthatoperateinthemixedmobileandportable hostplatformexposureconditions.Thegranteeisresponsiblefordocumentingthisaccording toClassIpermissivechangerequirements.AntennasthatqualifyforstandaloneSARtest exclusionmustapplytheestimatedstandaloneSARtodeterminesimultaneoustransmission testexclusion. a)The[∑of(thehighestmeasuredorestimatedSARforeachstandaloneantenna configuration,adjustedformaximumtune-uptolerance)/1.6W/kg]+[∑ofMPEratios]is≤ 1.0. b)TheSARtopeaklocationseparationratiosofallsimultaneouslytransmittingantennapairs operatinginportabledeviceexposureconditionsareall≤0.04,andthe[∑ofMPEratios]is ≤1.0. 3.ConductedPeakOutputPower TXfrequencyrange:315MHz Devicecategory:Portabledevice(Distance:5mm)Max.FieldStrength:68.20dBuV/m@3m EIRP=E-104.8+20logD=68.20-104.8+20log3=-26.65dBm MaximumConductedOutputPower:-26.65dBm Tune-up:-±1 4.EvaluationResult Band/Modef(GHz) Antenna Distance (mm) RFoutputpower SARTest Exclusion Threshold SARTest Exclusion dBmmW ASK0.3155-25 0.0032 0.0010<3.0Yes Remark: 1.Outputpowerincludingtuneuptolerance; 2.Whentheminimumtestseparationdistanceis<5mm,adistanceof5mmaccordingtof)in section4.1isappliedtodetermineSARtestexclusion. 5.Conclusion ThemeasurementresultscomplywiththeFCCLimitper47CFR2.1093fortheuncontrolled RFExposureandSARExclusionThresholdperKDB447498v06. ------Endofthereport------

ReportNo.:CISRR251011026 Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangce TestingTechnologyCo.,Ltd. Page1of25 TESTREPORT ReportNo.CISRR251011026 ProjectNo.CISR251011026 FCCID ApplicantChongqingDaomadanTechnologyCo.,Ltd. Address No.688,XiemaStreet,XiemaStreet,BeibeiDistrict,Chongqing(Xiema ExpansionPark,ChongqingHi-TechZone) ManufacturerChongqingJiantaoInternetofThingsTechnologyCo.,Ltd. AddressNo.3-1/2/3,JiaganRoad,BeibeiDistrict,Chongqing. ProductNamewirelesscallingsystem Trademark Model/TypereferenceJT-362 ListedModel(s)SeeSection4.1 Standard 47CFRPart15.231 DateofsamplereceiptOctober13,2025 TestdateOctober13,2025toOctober16,2025 IssuedateOctober16,2025 TestresultComplied Reviewedby:LucasHuangApprovedby:HansHu 2BSTN-JT-362 ReportNo.:CISRR251011026 Page:2of25 Contents 1.STANDARDANDAPPLICABLETESTMETHODS..........................................................3 2.REPORTVERSION.........................................................................................................................................3 3.SUMMARYOFTESTRESULT.......................................................................................................................4 4.SUMMARY.....................................................................................................................................................5 4.1.ProductDescription....................................................................................................................................5 4.2.RadioSpecificationDescription................................................................................................................5 4.3.ModificationofEUT.....................................................................................................................................6 4.4.TestingSite...................................................................................................................................................6 4.5.FieldStrengthCalculation..........................................................................................................................6 4.6.DISTURBANCECalculation........................................................................................................................6 5.TESTCONFIGURATION.............................................................................................................................7 5.1.Testfrequencylist.......................................................................................................................................7 5.2.Testmode.....................................................................................................................................................7 5.3.Supportunitusedintestconfigurationandsystem...............................................................................7 5.4.Testsampleinformation.............................................................................................................................7 5.5.Testingenvironmentalcondition...............................................................................................................8 5.6.Statementofthemeasurementuncertainty.............................................................................................8 5.7.EquipmentUsedduringtheTest...............................................................................................................9 6.TESTCONDITIONSANDRESULTS.....................................................................................................10 6.1.AntennaRequirement...............................................................................................................................10 6.2.RadiatedSpuriousEmission....................................................................................................................12 6.3.TransmitterDeactivationTime.................................................................................................................17 6.4.DutycycleFactor.......................................................................................................................................18 7.TESTSETUPPHOTOS............................................................................................................................20 8.EXTERNALANDINTERNALPHOTOS.................................................................................................21 7.1Externalphotos...........................................................................................................................................21 7.2Internalphotos............................................................................................................................................24 ReportNo.:CISRR251011026 Page:3of25 1.STANDARDANDAPPLICABLETESTMETHODS Thetestswereperformedaccordingtofollowingstandards: 47CFRPart15.231:Periodicoperationintheband40.66-40.70MHzandabove70MHz ANSIC63.10-2020:AmericanNationalStandardofProceduresforComplianceTestingofUnlicensed WirelessDevices. 2.REPORTVERSION VersionNo.IssuedateDescription 00October16,2025Original ReportNo.:CISRR251011026 Page:4of25 3.SUMMARYOFTESTRESULT Report clause TestItemStandardRequirementResult 5.1AntennaRequirement15.203PASS 5.220dBBandwidth15.231(c)PASS 5.3RadiatedSpuriousEmission15.231(a)/15.205/15.209PASS 5.4TransmitterDeactivationTime15.231PASS 5.5DutycycleFactor15.231PASS Note: ‒Themeasurementuncertaintyisnotincludedinthetestresult. ReportNo.:CISRR251011026 Page:5of25 4.SUMMARY 4.1.ProductDescription Mainunitinformation: ProductName:wirelesscallingsystem Trademark: ModelNo.:JT-362 ListedModel(s): JT-362-1,JT-362-2,JT-362-3,JT-362-4,JT-362-5,JT-362-6,JT-362-7,JT- 362-8,JT-362-9,JT-362-10,JT-362-11,JT-362-12,JT-362-13,JT-362-14,JT- 362-15,JT-362-16,JT-362-17,JT-362-18,JT-362-19,JT-362-20,JT-362- 21,JT-362-22,JT-362-23,JT-362-24,JT-362-25,JT-362-26,JT-362-27,JT- 362-28,JT-362-…

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ReportNo.:CISRR251011026 Page:20of25 7.TESTSETUPPHOTOS RadiatedSpuriousEmission(Above1GHz) RadiatedSpuriousEmission(below1GHz)