2AQQS-S3Intercom Doorbell

2481.428571MHz 3 FCC Warning This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

{ShenzhenTodakjCo.,Ltd.} FederalCommunicationsCommission AuthorizationandEvaluationDivision EquipmentAuthorizationBranch 7435OaklandMillsRoad Columbia,MD21046 {2024-07-1} U.S.AgentDesignation NameandcompanyofU.S.agent:{FCCUSAgent,LLC} PhysicalU.S.addressofagent:{3722lllinoisAvenue,SaintCharles,IL,60174,USA} FRNofU.S.agent:{0033402884} EmailaddressofU.S.agent {Shenzhen Todakj Co., Ltd.}acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought(FCC ID:2AQQS-S3 ): :{[email protected]} {FCCUSAgent,LLC}acknowledgestheirobligationtoacceptserviceofprocessonbehalfof{ShenzhenTodakj Co.,Ltd.}. {ShenzhenTodakjCo.,Ltd.}withtheFRN[{0027727668}]acceptsitsobligationtomaintainanagentfor serviceofprocessintheUnitedStatesfornolessthanoneyearaftereitherthegranteehaspermanently terminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S.,ortheconclusionofany Commission-relatedadministrativeorjudicialproceedinginvolvingtheequipment,whicheverislater. Bysigningthisform,weconfirmtheaboveandthatweareawareoftheapplicationrequirementslistedunder§ 2.911(d)(7). TheinformationprovidedinthisletterisbasedonthereferencedrulepartsofTitle47oftheCFRaswellasKDB 986446D01. Anexpirationdateforthisletterdoesnotexist.IncasetheU.S.agentchanges,thegranteeisobligatedtonotify theFCCwithin30daysviathegrantingTCB. Sincerely, Signature {Li Huang} {Manager} {Shenzhen Todakj Co., Ltd.} Signature {Tim Payne} {Certification Manager} {FCC US Agent, LLC} 4 8 _ [ m o d e l ] U S _ A g e n t _ 2 . 9 1 1 ( d ) ( 7 ) - U , V 0 5

Page1of5FCCID: 2AQQS-S3 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. EUTConstructionalDetails ExternalEUTPhoto Photo1 Photo2 Page2of5FCCID: 2AQQS-S3 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo3 Photo4 Page3of5FCCID: 2AQQS-S3 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo5 Photo6 Page4of5FCCID: 2AQQS-S3 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo7 Photo8 Page5of5FCCID: 2AQQS-S3 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo9 ------End------

Label FCCID:2AQQS-S3

Page1of5FCCID:2AQQS-S3 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. EUTConstructionalDetails InternalEUTPhoto Photo1 Photo2 Page2of5FCCID:2AQQS-S3 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo3 Photo4 Page3of5FCCID:2AQQS-S3 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo5 Photo6 Antenna Page4of5FCCID:2AQQS-S3 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo7 Photo8 Page5of5FCCID:2AQQS-S3 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo9 ------End------

RFExposureevaluation 1.1.FCCID:2AQQS-S3 1.2.ApplicableStandard Accordingto§1.1307(b)(1),systemsoperatingundertheprovisionsofthissectionshallbeoperatedina mannerthatensuresthatthepublicisnotexposedtoradiofrequencyenergylevelinexcessofthe Commission’sguidelines. Accordingto§1.1310and§2.1093RFexposurerequirement KDB447498v06:MobileandPortableDevicesRFExposureProceduresandEquipmentAuthorization Policies 1.3.Requirement AccordingtoKDB447498D01GeneralRFExposureGuidancev06Section4.3.1StandaloneSARtest exclusionconsiderations:“UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures, standalone1-gheadorbodyand10-gextremitySARevaluationforgeneralpopulationexposureconditions, bymeasurementornumericalsimulation,isnotrequiredwhenthecorrespondingSARTestExclusion Thresholdcondition,listedbelow,issatisfied.Thesetestexclusionconditionsarebasedonsource-based time-averagedmaximumconductedoutputpoweroftheRFchannelrequiringevaluation,adjustedfortune-up tolerance,andtheminimumtestseparationdistancerequiredfortheexposureconditions.22Theminimum testseparationdistanceisdeterminedbythesmallestdistancefromtheantennaandradiatingstructuresor outersurfaceofthedevice,accordingtothehostformfactor,exposureconditionsandplatformrequirements, toanypartofthebodyorextremityofauserorbystander(see5)ofsection4.1).ToqualifyforSARtest exclusion,thetestseparationdistancesappliedmustbefullyexplainedandjustifiedbytheoperating configurationsandexposureconditionsofthetransmitterandapplicablehostplatformrequirements,typically intheSARmeasurementorSARanalysisreport,accordingtotherequiredpublishedRFexposureKDB procedures.WhennootherRFexposuretestingorreportingisrequired,astatementofjustificationand compliancemustbeincludedintheequipmentapproval,inlieuoftheSARreport,toqualifyfortheSARtest exclusion.Whenrequired,thedevicespecificconditionsdescribedintheotherpublishedRFexposureKDB proceduresmustbesatisfiedbeforeapplyingtheseSARtestexclusionprovisions;forexample,handheldPTT two-wayradios,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 •3.0and7.5arereferredtoasthenumericthresholdsinthestep2below Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mmandfor transmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtestseparationdistanceis<5 mm,adistanceof5mmaccordingto5)insection4.1isappliedtodetermineSARtestexclusion. 1.3.ManufacturingTolerance GFSK Channel2481.428571MHz Target(dBm)-8.0 Tolerance±(dB)1.0 2.EvaluationResult EvaluationResults Band/Modef(GHz) Antenna Distance (mm) RFoutputpower includingtuneup SARTest Exclusion Threshold SARTest Exclusion dBmmW SRD2.55-70.200.063<3Yes Accordingtothefollowtransmitteroutputpower（P t ）formula： P t =（Exd） 2 /（30xg t ） P t =transmitteroutputpowerinwatts g t =numericgainofthetransmittingantenna(unitess) E=electricfieldstrengthinV/m d=measurementdistanceinmeters(m) Accordingtotheformuladescribedabove: 2481.428571MHz Emax=89.74dBuV/m=0.031V/m,d=3m,g t =1.00 P t =（Exd） 2 /（30xg t ）=(0.031x3) 2 /(30x1.00)=0.00015W=0.15mW=-8.31dBm Remark: Whentheminimumtestseparationdistanceis<5mm,adistanceof5mmaccordingtof)insection4.1isappliedto determineSARtestexclusion. 3.Conclusion ThemeasurementresultscomplywiththeFCCLimitper47CFR2.1093fortheuncontrolledRFExposure andSARExclusionThresholdperKDB447498v06,NoSARisrequired. .....................End.........................

Page1of32ReportNo.:AIT24061301W1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. TESTREPORT ClientInformation: Applicant:ShenzhenTodakjCo.,Ltd. Applicantadd.: No.40HuanDongRoad,TieGangIndustrialDistrict,Baoan,Shenzhen, China Manufacturer:ShenzhenTodakjCo.,Ltd. Manufactureradd.: No.40HuanDongRoad,TieGangIndustrialDistrict,Baoan,Shenzhen, China ProductInformation: ProductName:IntercomDoorbell ModelNo.:S3 BrandName: N/A FCCID:2AQQS-S3 Applicablestandards: FCCCFRTitle47Part15SubpartCSection15.249 PreparedBy: DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang,Huangjiang,Dongguan, Guangdong,China Tel.:+86-769-82020499Fax.:+86-769-82020495 DateofReceipt:June13,2024DateofTest:June13,2024~June18,2024 DateofIssue:June19,2024TestResult:Pass Thisdevicehasbeentestedandfoundtocomplywiththestatedstandard(s),whichis(are) requiredbythecouncildirectiveof2014/53/EUandindicatedinthetestreportandare applicableonlytothetestedsampleidentifiedinthereport. Note:Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalof DongguanYaxu(AiT)TechnologyLimited,thisdocumentmaybealteredorrevisedby DongguanYaxu(AiT)TechnologyLimited,personalonly,andshallbenotedintherevisionof thedocument.Thistestreportmustnotbeusedbytheclienttoclaimproductendorsement. Reviewedby:Approvedby: EmiyaLinSimbaHuang Page2of32ReportNo.:AIT24061301W1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. 1Contents Page COVERPAGE 1CONTENTS...........................................................................................................................................................................2 2TESTSUMMARY.................................................................................................................................................................4 2.1StatementoftheMeasurementUncertainty........................................................................................4 2.2MeasurementUncertainty....................................................................................................................4 3TESTFACILITY....................................................................................................................................................................5 3.1Deviationfromstandard.......................................................................................................................5 3.2Abnormalitiesfromstandardconditions...............................................................................................5 3.3TestLocation.........................................................................................................................................5 4GENERALINFORMATION................................................................................................................................................6 4.1Testfrequencies...................................................................................................................................7 4.2EUTPeripheralList..............................................................................................................................8 4.3TestPeripheralList...............................................................................................................................8 4.4TESTMETHODOLOGY.......................................................................................................................9 4.5DescriptionofTestModes..................................................................................................................10 5EQUIPMENTUSEDDURINGTEST...............................................................................................................................11 6TESTRESULTSANDMEASUREMENTDATA..........................................................................................................13 6.1Antennarequirement..........................................................................................................................13 6.220dBSpectrumBandwidthMeasurement........................................................................................14 6.3RadiatedEmissionsMeasurement....................................................................................................16 6.4ConductedEmissions.........................................................................................................................28 7TESTSETUPPHOTO.......................................................................................................................................................32 8EUTCONSTRUCTIONALDETAILS..............................................................................................................................32 Page3of32ReportNo.:AIT24061301W1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. ReportReviseRecord Report Version ReviseTimeIssuedDateValidVersionNotes V1.0/June19,2024ValidInitialrelease Page4of32ReportNo.:AIT24061301W1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. 2TestSummary TestItemSectioninCFR47Result Antennarequirement§15.203Pass ACPowerLineConductedEmission§15.207Pass Fundamental&RadiatedSpurious EmissionMeasurement §15.249(a)/§15.209Pass 20dBChannelBandwidth15.215(c)Pass BandEdge§15.249(d)/§15.205Pass Note 1.TestaccordingtoANSIC63.10:2013. 2.Themeasurementuncertaintyisnotincludedinthetestresult. 2.1StatementoftheMeasurementUncertainty Thedataandresultsreferencedinthisdocumentaretrueandaccurate.Thereaderiscautionedthat theremaybeerrorswithinthecalibrationlimitsoftheequipmentandfacilities.Themeasurement uncertaintywascalculatedforallmeasurementslistedinthistestreportacc.ToCISPR16–4 “Specificationforradiodisturbanceandimmunitymeasuringapparatusandmethods–Part4: UncertaintyinEMCMeasurements”andisdocumentedintheA…

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深圳市合拓科技有限公司 样品承认书 SampleApprovedSheet 客户判定审核组 承认审核批准承认日期 评审项目：□承认书 3 份□规格书 / 图纸□检测报告□样品PCS□安规□HSF 评审结果：□接受□有条件接受□拒绝 客户名称深圳市同达科技有限公司 客户项目名XZX-SBA-TDKJ-对讲机产品名称2.4G天线 客户编码料号 007.0009 规格描述 2.4G天线：HT-WIFI-XZX-SBA-TDKJ,1.13黑色线长L=60mm 研发审核 制订审核批准承认书完成时间 李瑶娜胡雪文戴庭庭 2023.9.26 修订履历 版本修订内容责任人核准日期 ConfidentialInformation Page 2 目录/Catalogue 序号 No. 项目 Item 页码 PageNo. 1射频性能测试报告3-6 2图纸或实物图片7 3尺寸测量报告8 4可靠性测试报告9 5包装文件10 ConfidentialInformation Page 3 1.Antennapicture Thereportmainlyprovidestheteststatusoftheelectricalpropertiesparametersof XZX-SBA-TDKJ对讲机.TheXZX-SBA-TDKJ对讲机antennaisa2.4~2.5GHzBand.The antennaPictureandassemblyareshownbelow.Antennapicture&assemblypicture 2.AntennaTestEquipmentIntroduction TestofantennainputcharacteristicsusingAgilentE5071CandAgilent5062Avector networkanalyzer;TheradiationpatternoftheantennaaretestedusingtheSatimostarlab 3DnearfieldAnechoicChamber,andtheinstrumentisusedtoagilent8960E5515and AgilentE4438C.Thetestcoordinatesofthedarkroomareasfollows: 3.ElectricalSpecification ConfidentialInformation Page 4 3-2PassiveS11parameter MeasuringMethodisa50Ωcoaxialcableisconnectedtotheantenna.Thenthiscableis connectedtoanetworkanalyzertomeasuretheS11parameter,Keepingthisfixtureawayfrommetal atleast20cm. VSWR ConfidentialInformation Page 5 3-3AntennaMatchingNetwork ConfidentialInformation Page 6 ConfidentialInformation Page 7 ConfidentialInformation Page 8 样品尺寸测量报告 SampleDimensionsTestReport 测试日期 TestDate 2023.9.26 样品数量 SampleQty. 3 测试人 Inspector 李瑶娜 尺寸编号 DimensionNo. 标准 Standard 样品1 Sample1 样品2 Sample2 样品3 Sample3 Pass/NG ①长度45.4±0.2mm45.445.545.4 Pass ②宽度26.05±0.2mm26.0526.0926.08 Pass ③厚度0.1±0.05mm0.10.10.1 Pass ④线长60±1mm60.460.760 Pass ⑤ ⑥ ⑦ 最终结论 Conclusion PASS 测试人&日期 Inspector&Date 李瑶娜/2023.9.26 批准&日期 Approval&Date ConfidentialInformation Page 9 可靠性测试报告 ReliabilityTestReport 测试日期 TestDate 2022.9.25 样品数量 SampleQty. 3 测试人 Inspector 李瑶娜 测试项目 TestItem 要求 Requirement 试验设备 testing equipment 样品1 Sample1 样品2 Sample2 样品3 Sample3 判定 PASS/NG 高温存储 在+80°C条件下暴露 24H，恢复2H后进行测 试 恒温恒湿箱OKOKOKPass 低温存储 在-40°C条件下暴露 24H，恢复2H后进行测 试 恒温恒湿箱OKOKOKPass 高温工作 在+60°C条件下通电工 作24H 恒温恒湿箱OKOKOKPass 低温工作 在-20°C条件下通电工 作24H 恒温恒湿箱OKOKOKPass 盐雾试验 (5士0．5)%氯化钠、 pH值为6.5～7.2，实验 箱温度(35±2)°C □24H☑48H 盐雾试验机OKOKOKPass 连接器铆压 拉拔力 1.13线径≥10N 0.81线径≥8N RG174≥60N RG178≥50N 推拉力计///Pass 最终结论 Conclusion Pass 测试人& 日期 Inspector& Date 李瑶娜2023.9.26 批准&日期 Approval&D ate ConfidentialInformation Page 10 包 装 规 范 客户： 成品名称：FPC天线 FPC成品天线

Page1of2FCCID: 2AQQS-S3 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. TestSetupPhoto RadiatedEmission Page2of2FCCID: 2AQQS-S3 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. ConductedEmission ------End------