2AZ4D-V6Walkie Talkies for Kids

ShenzhenShengtaismartInnovationTechnologyCo.LTD 2.911(d)(7)USAAgentv1.4 Section2.911(d)(7)USAAgentforServiceofProcess Companyname:ShenzhenShengtaismartInnovationTechnologyCo.LTD Address:201,301,401,Building2,GaoshiNewEnergyIndustrialPark,No.10, XiushaRoad,ShatinCommunity,KengziStreet,PingshanDistrict,Shenzhen,China ProductName:WalkieTalkiesforKids FCCID:2AZ4D-V6 Model(s):V6,LM03,LM05,LM06,LM07,LM08,LM09,LM01,V1, V3,V5,V7,V8,V9 2.911(d)(7)USADesignatedAgentforServiceofProcess We,[ShenzhenShengtaismartInnovationTechnologyCo.LTD](“theapplicant”) designate[CELLTINC.] NOTE1 forthepurposeofacceptingserviceofprocesson behalfoftheapplicant. Applicantconsent:WeAcknowledgeourconsenttoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddressofthedesignatedagentandacknowledgeour acceptanceofourobligationtomaintainanagentforserviceofprocessintheUnited Statesfornolessthanoneyearaftereitherthegranteehaspermanentlyterminated allmarketingandimportationoftheapplicableequipmentwithintheU.S.,orthe conclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolving theequipment,whicheverislater. Agentobligation:WeAcknowledgeourobligationtoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipmentatourphysicalU.S. addressandemailaddressfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipment withintheU.S.,ortheconclusionofanyCommission-relatedadministrativeorjudicial proceedinginvolvingtheequipment,whicheverislater. USAAgent Companyname:CELLTINC. Address:140121STST#12958 SACRAMENTO,CA95811,USA Applicant Companyname:ShenzhenShengtai smartInnovationTechnologyCo.LTD Address:201,301,401,Building2,Gaoshi NewEnergyIndustrialPark,No.10, XiushaRoad,ShatinCommunity,Kengzi Street,PingshanDistrict,Shenzhen, China ShenzhenShengtaismartInnovationTechnologyCo.LTD 2.911(d)(7)USAAgentv1.4 FRN:0036412567 ContactName:ThompsonLim TelephoneNo:001-424-3474188 Email:[email protected] FRN:0030972772 FCCGranteeCode:2AZ4D ContactName:XinhuaQiu TelephoneNo:0755-33592466 Email:[email protected] Signature: Title:GeneralManager Signature: Title:Manager Date:2026.07.04Date:2026.07.04 NOTE1:AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforservice ofprocess. Reference;FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

Rev1/26/2023 ShenzhenShengtaismartInnovationTechnologyCo.LTD FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:06-26-2026 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2AZ4D-V6 (“ShenzhenShengtaismartInnovationTechnologyCo.LTD”)certifiesthattheequipmentforwhich authorizationissoughtisnot“covered”equipmentprohibitedfromreceivinganequipment authorizationpursuanttosection2.903oftheFCCrules. (“ShenzhenShengtaismartInnovationTechnologyCo.LTD”)certifiesthattheequipmentforwhich authorizationissoughtdoesnotincludecybersecurityoranti-virussoftwareproducedorprovidedby KasperskyLab,Inc.oranyofitssuccessorsandassignees,includingequipmentwithintegratedKaspersky Lab,Inc.(oranyofitssuccessorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24- 886andKDB986446D01CoveredEquipmentGuidancesectionB(2a). Deviceisinherentlycompliantbasedonhardwarelimitationsorsoftwarecontrols. or ASoftwareBillofMaterials(SBOM)isprovidedtotheTCBforreview,and Theend-userorthirdpartiescannotinstalladditionalsoftwareonthisdevice. Sincerely, (Applicantsignature)XinhuaQiu (Applicantprintedname) Rev1/26/2023 ShenzhenShengtaismartInnovationTechnologyCo.LTD FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:06-26-2026 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2AZ4D-V6 (“ShenzhenShengtaismartInnovationTechnologyCo.LTD”)certifiesthat,asofthedateofthefilingof theapplication,ShenzhenShengtaismartInnovationTechnologyCo.LTDisnotidentifiedonthe CoveredList(asaspecificallynamedentityoranyofitssubsidiariesoraffiliates)asanentityproducing “covered”equipment. Sincerely, (Applicantsignature) (Applicantprintedname)XinhuaQiu

ShenzhenShengtaismartInnovationTechnologyCo.LTD Date ： 07-04-2026 Product/ModelNumber:WalkieTalkiesforKids/V6,LM03,LM05,LM06, LM07,LM08,LM09,LM01,V1,V3,V5,V7,V8,V9 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatQAILaboratoriesLtd.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyQAILaboratoriesLtd.onour behalfshallhavethesameeffectasactsofourown. By:XinhuaQiu ContactListedonFCCWesbite Title:Manager Email:[email protected] Telephone:0755-33592466 Onbehalfof:ShenzhenShengtaismartInnovationTechnologyCo.LTD

ShenzhenShengtaismartInnovationTechnologyCo.LTD OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:June26,2026 Subject;RequestforConfidentiality FCCID:2AZ4D-V6 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthese documentsmightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantage inthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure SoftwareSecurityRequirementsforUNIIdevices Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:XinhuaQiu Title: Manager

Label: WalkieTalkiesforKids Model:V6 FCCID:2AZ4D-V6 35mm 25mm

FCC ID:2AZ4D-V6 RFExposureEvaluation According toKDB 447498 D01 General RF Exposure Guidance v06and part 2.1093， Unless specifically required by thepublished RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required whenthe correspondingSAR Test Exclusion Thresholdcondition(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separationdistances ≤ 5 mm, the 1-g and 10-g SAR test exclusion thresholds aredetermined by the following: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] ꞏ [√f (GHz) ] ≤ 3.0 for 1-g SAR, and ≤ 7.5 for 10-g extremity SAR, where f (GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to thenearest mW and mm before calculation The result is rounded to one decimal place for comparison Here, So a SAR test is not required Mode Freque ncy (MHz) Max Power (dBm) Target power W/ tolerance (dBm) Max tune up power tolerance (dBm) Max Power (mW) Min. Distance (mm) Calc. thresholds limit GFSK 2412 5.66 5±1.0 63.9815.001.23663.0 2440 5.63 5±1.063.9815.001.24373.0 2469 5.05 5±1.0 63.9815.001.25113.0

Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page1of22 RFTestData FCCID:2AZ4D-V6 Duty Cycle........................................................................................................................................................................2 Maximum Peak Conducted Output Power.......................................................................................................................4 -6dB Bandwidth................................................................................................................................................................7 Occupied Channel Bandwidth........................................................................................................................................10 Maximum Power Spectral Density Level....................................................................................................................... 13 Band Edge......................................................................................................................................................................16 Conducted RF Spurious Emission.................................................................................................................................19 Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page2of22 Duty Cycle ConditionModeFrequency(MHz)AntennaDutyCycle(%)CorrectionFactor(dB)1/T(kHz) NVNT GFSK2412Ant132.484.882.46 NVNT GFSK2440Ant132.484.882.46 NVNT GFSK2469Ant132.484.882.46 Duty Cycle NVNT BLE 1M 2412MHz Ant1 Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page3of22 Duty Cycle NVNT BLE 1M 2440MHz Ant1 Duty Cycle NVNT BLE 1M 2469MHz Ant1 Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page4of22 Maximum Peak Conducted Output Power ConditionModeFrequency (MHz) AntennaConducted Power(dBm) Conducted Power(W) Limit Conducted(dBm) Verdict NVNT GFSK2412Ant15.660.0036830Pass NVNT GFSK2440Ant15.630.0036630Pass NVNT GFSK2469Ant15.050.003230Pass Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page5of22 Peak Power NVNT GFSK 2412MHz Ant1 Peak Power NVNT GFSK 2440MHz Ant1 Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page6of22 Peak Power NVNT GFSK 2469MHz Ant1 Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page7of22 -6dB Bandwidth ConditionModeFrequency (MHz) Antenna-6dBBandwidth (MHz) Limit-6dBBandwidth (MHz) Verdict NVNT GFSK2412Ant11.0380.5Pass NVNT GFSK2440Ant11.0270.5Pass NVNT GFSK2469Ant11.0490.5Pass Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page8of22 -6dB Bandwidth NVNT BLE 1M 2412MHz Ant1 -6dB Bandwidth NVNT GFSK 2440MHz Ant1 Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page9of22 -6dB Bandwidth NVNT GFSK 2469MHz Ant1 Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page10of22 Occupied Channel Bandwidth ConditionModeFrequency(MHz)Antenna99%OBW(MHz) NVNTGFSK2412Ant11.9215 NVNTGFSK2440Ant11.9087 NVNTGFSK2469Ant11.8886 Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page11of22 OBW NVNT GFSK 2412MHz Ant1 OBW NVNT GFSK 2440MHz Ant1 Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page12of22 OBW NVNT GFSK 2469MHz Ant1 Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page13of22 Maximum Power Spectral Density Level ConditionModeFrequency (MHz) AntennaConductedPSD (dBm/3kHz) Limit (dBm/3kHz) Verdict NVNT GFSK2412Ant1-7.578Pass NVNT GFSK2440Ant1-6.848Pass NVNT GFSK2469Ant1-8.268Pass Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page14of22 PSD NVNT GFSK 2412MHz Ant1 PSD NVNT GFSK 2440MHz Ant1 Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page15of22 PSD NVNT GFSK 2469MHz Ant1 Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page16of22 Band Edge ConditionModeFrequency(MHz)AntennaMaxValue(dBc)Limit(dBc)Verdict NVNTGFSK2412Ant1-48.74-20Pass NVNTGFSK2469Ant1-48.67-20Pass Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page17of22 Band Edge NVNT BLE 1M 2412MHz Ant1 Ref Band Edge NVNT BLE 1M 2412MHz Ant1 Emission Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page18of22 Band Edge NVNT BLE 1M 2469MHz Ant1 Ref Band Edge NVNT BLE 1M 2469MHz Ant1 Emission Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page19of22 Conducted RF Spurious Emission ConditionModeFrequency(MHz)AntennaMaxValue(dBc)Limit(dBc)Verdict NVNTGFSK2412Ant1-29.06-20Pass NVNTGFSK2440Ant1-23.01-20Pass NVNTGFSK2469Ant1-21.87-20Pass Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page20of22 Tx. Spurious NVNT BLE 1M 2412MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2412MHz Ant1 Emission Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page21of22 Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Emission Report No.:SZNTT26018519E1-1 SZNTT-TR728-0Page22of22 Tx. Spurious NVNT BLE 1M 2469MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2469MHz Ant1 Emission

Specification Projectname： ProductName:2.4GCopperTube-Antenna ProductCode: Pleasereturnonecopytoourcompanyforarchivingaftersigningandstampingit.Thankyouforyourcooperation! Producer Examineandverify Date HuangJiajunZhuYongjian2026-1-13 CustomerConfirmation: CustomerName:CashAccount Ratify： Time： Explanatorynote： ShenzhenXingtongWirelessTechnologyCo.,Ltd. ShenzhenXingtongWieressTechnologyCo.,Ltd 278505140755-2785051Tel:+86-755-Fax:+86-4 Address:3rdFloor,BuildingA1,QiangrongdongIndustrialZone,Jiuyiwei,Xixiang,Bao'anDistrict,ShenzhenCity ShenzhenXingtongWirelessTechnologyCo.,Ltd. ShenzhenXingtongWieressTechnologyCo.,Ltd Date 2026-1-13 EditionA0 Documentnumber XT-YF-004 Productname 2.4GCopperTubeAntenna Identificationofproduct XT086-APP-RA Page1of6 1.ProductStructure  1.AntennaMaterial:copperpipe  2.AdhesiveType:nothave  3.AntennaDimensions:30/25mm(tolerance±1mm)  4.Coaxiallinedimensions:72.00￠1.13–GenerationIIPEX(tolerance±2mm) 2.ParameterIndex(ParameterIndex) rangeofapplication:PassengerServiceEquipment AntennaFrequency:2400-2500Mhz antennaimpedance:50Ω AntennaStandingWave:＜1.3DBM  Antennaaveragegain:≥3dBi returnloss:＜-10  PolarizationMethod:Vertical/Horizontal powercapacity:5W  waytoinstall:IPEX/TerminalCableConnectingtotheMainBoard 3.AntennaS11Value(S11)  3.1:AntennaStandingWaveRatio/AntennaReturnLossValue/SmithDiagram ShenzhenXingtongWirelessTechnologyCo.,Ltd. ShenzhenXingtongWieressTechnologyCo.,Ltd Date 2026-1-13 EditionA0 Documentnumber XT-YF-004 Productname 2.4GCopperTubeAntenna Identificationofproduct XT086-APP-RA Page2of6 4.Antenna(OTA)TestingEnvironment 4.1:TestingEnvironmentandInstruments:3Dmicrowaveanechoicchamber,networkanalyzer,PC-basedtestingsoftware,engineeringsamples,10dBattenuator,etc. 4.2:AntennaEfficiency/Gain ShenzhenXingtongWirelessTechnologyCo.,Ltd. ShenzhenXingtongWieressTechnologyCo.,Ltd Date 2026-1-13 EditionA0 Documentnumber XT-YF-004 Productname 2.4GCopperTubeAntenna Identificationofproduct XT086-APP-RA Page3of6  4.3:Antenna–3DDirectionPattern ShenzhenXingtongWirelessTechnologyCo.,Ltd. ShenzhenXingtongWieressTechnologyCo.,Ltd Date 2026-1-13 EditionA0 Documentnumber XT-YF-004 Productname 2.4GCopperTubeAntenna Identificationofproduct XT086-APP-RA Page4of6 5.AttachedMap：  5.1:FinalDesignDiagramoftheAntenna Unit: mm ShenzhenXingtongWirelessTechnologyCo.,Ltd. ShenzhenXingtongWieressTechnologyCo.,Ltd Date 2026-1-13 EditionA0 Documentnumber XT-YF-004 Productname 2.4GCopperTubeAntenna Identificationofproduct XT086-APP-RA Page5of6 6.DurabilityVerification: Test/TestItem MaintenanceenergyInspectionNumber ProductName/Specification Externalcoppertubeantenna NumberofUnits:5PCS SubmissionDate:2026-1-13 CompletionDate:2026-1-13 TestingEquipment: 1.Thetensiletestwasperformedfivetimes.(Thetestingdeviceisshowninthefigure.) Note:Testataconstantspeed;donottestathighspeed. ProjectConditionsTheholdingforcebetweentheterminalandthecableis≥ 0.6kgf NumberofTests12345 Testresult 0.60.70.70.90.7 Test/inspectionresult:Pass Test/InspectionConclusion:□Qualified □Unqualified □Donotmakeajudgment Test:ZhuYongjian Review:WuYanlong ShenzhenXingtongWirelessTechnologyCo.,Ltd. ShenzhenXingtongWieressTechnologyCo.,Ltd Date 2026-1-13 EditionA0 Documentnumber XT-YF-004 Productname 2.4GCopperTubeAntenna Identificationofproduct XT086-APP-RA Page6of6 7.ReliabilityTest： Ordernumber TestitemTestRequirementsTesttoolsTestresult 1Tinmeltingpoint 288°C,10seconds;nostratificationorbubblingobserved CopperstoveOk 2Solderability 245°C,5s:thesoldersurfaceissmoo- th,andthesoldercoveragearea≥95%. CopperstoveOk 3TractionforceN/ATensimeterOk 4ReverseTractionForceN/ATensimeterOk 5 Strippingstrength(coatingfilm) ≥0.35kg/cm StrippingStrengthTestInstrument Ok 6 Strippingstrength(copperfoil) ≥0.8kg/cm StrippingStrengthTestInstrument Ok 7 Flowabilityofhotmeltadhesive 0.1～0.15/Ok 8.MattersNeedAttention： Afteropening,carefullycheckiftheitemsareintact.Ifanydamageisfound,contactusimmediately.

ShenzhenNTTTestingTechnologyCo.,Ltd.ReportNo.:SZNTT26018519E1-1 SZNTT-TR828-0Tel:0755-27889935Web:http://www.ntt-testing.comPage1of29 TESTREPORT Applicant:ShenzhenShengtaismartInnovationTechnologyCo.LTD Address: 201,301,401,Building2,GaoshiNewEnergyIndustrialPark,No. 10,XiushaRoad,ShatinCommunity,KengziStreet,Pingshan District,Shenzhen,China Manufacturer:ShenzhenShengtaismartInnovationTechnologyCo.LTD Address: 201,301,401,Building2,GaoshiNewEnergyIndustrialPark,No. 10,XiushaRoad,ShatinCommunity,KengziStreet,Pingshan District,Shenzhen,China ProductName:WalkieTalkiesforKids ModelNumber: V6,LM03,LM05,LM06,LM07,LM08,LM09,LM01,V1, V3,V5,V7,V8,V9 Trademark: N/A FCCID:2AZ4D-V6 TestDate: Apr.30,2026–Jun.03,2026 DateofReport: Jun.04,2026 TestResult: ThisdevicedescribedabovehasbeentestedbyNTT,andthetest resultsshowthattheequipmentundertest(EUT)isincompliance withtheStandardrequirements.Anditisapplicableonlytothetested sampleidentifiedinthereport. TestProcedureUsed: Standards:FCCCFRTitle47Part15SubpartCSection15.247 ANSIC63.10-2020+Cor.1-2023 KDB558074D0115.247MeasGuidancev05r02 Preparedby(TestEngineer): CindyQin Approved(Manager): KenWu Approved(Manager): AbelYu ShenzhenNTTTestingTechnologyCo.,Ltd.ReportNo.:SZNTT26018519E1-1 SZNTT-TR828-0Tel:0755-27889935Web:http://www.ntt-testing.comPage2of29 TABLEOFCONTENT 1.GeneralInformation......................................................................................4 1.1.DescriptionofDevice(EUT).......................................................................................................................4 1.2.ChannelList..................................................................................................................................................4 1.3.Summaryoftestresult................................................................................................................................5 1.4.SpecialAccessoriesandAuxiliaryEquipment........................................................................................5 1.5.Testmode......................................................................................................................................................5 1.6.Testconfiguration.........................................................................................................................................5 1.7.BlockDiagram...............................................................................................................................................6 1.8.TestConditions.............................................................................................................................................6 1.9.MeasurementUncertainty(95%confidencelevels,k=2)......................................................................6 1.10.TestFacility..................................................................................................................................................7 1.11.TestEquipment...........................................................................................................................................8 2.Conductedemissionatthemainsterminalstest....................................10 2.1.Limit..............................................................................................................................................................10 2.2.TestSetup....................................................................................................................................................10 2.3.TestProcedure............................................................................................................................................10 2.4.TestResult...................................................................................................................................................11 3.RadiatedSpuriousEmissions...................................................................13 3.1.Limit..............................................................................................................................................................13 3.2.TestSetup....................................................................................................................................................14 3.3.TestProcedure............................................................................................................................................16 3.4.TestResult...................................................................................................................................................17 4.ConductedSpuriousEmissions................................................................22 4.1.Limit..............................................................................................................................................................22 4.2.TestSetup....................................................................................................................................................22 4.3.TestProcedure............................................................................................................................................22 4.4.TestResult...................................................................................................................................................23 5.BandEdgeMeasurement...........................................................................24 5.1.Limit..............................................................................................................................................................24 5.2.Testsetup....................................................................................................................................................24 5.3.TestProcedure............................................................................................................................................24 5.4.TestResult...........................…

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