2BTTJ-YDX198WBluetooth voice remote control

Yidongxing(Huizhou)TechnologyCo.,Ltd Address:Bloc1st,Dongju2ndRoad,Dieqi,LilinTown,ZhongkaiHigh-techZone,HuichengDistrict, HuizhouCity,China 1|Page AttestationStatements To:FederalCommunicationsCommissionDate:Jan.29,26 7435OaklandMillsRoad, Columbia,MD21046,USA Subject:AttestationofCompliancewithFCCCoveredListSoftwareRequirements FCCID:[2BTTJ-YDX198W] ProductName:[Bluetoothvoiceremotecontrol] Thisletterservesasanattestationthattheequipmentidentifiedabove☐is/☒isnot(selectone)"covered" softwareasdefinedundertheFederalCommunicationsCommission(FCC)CoveredListrequirements,as outlinedinFCC22-84andKDB986446. Specifically,theundersignedcertifiesthattheequipmentforwhichauthorizationissought: 1.Doesnotcontaincybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab, Inc.oranyofitssuccessors,assignees,parents,subsidiaries,affiliates,oranyentitythathasrebranded orrelabeledsoftwareproducedbytheaforementionedentities. 2.Doesnothavethecapabilitytostore,run,ordeliveranysoftwareidentifiedontheFCCCoveredList, includingbutnotlimitedtocybersecurityandanti-virussoftware. Tosupportthisattestation,theappendixevaluationdocumentationhasbeenpreparedandisincludedinthe certificationfiling. Thisattestationisbasedonathoroughevaluationofthedevice'sdesign,functionality,andsoftware environment.Theundersignedaffirmsthattheinformationprovidedisaccurateandcompletetothebestof theirknowledge. Sincerelyyours, ApplicantSignature PrintedName:CaiyongZhu Title:QualityManager Address:Bloc1st,Dongju2ndRoad,Dieqi,LilinTown,ZhongkaiHigh-techZone,HuichengDistrict,Huizhou City,China Tel.:0752-3991353 Email:[email protected] Yidongxing(Huizhou)TechnologyCo.,Ltd Address:Bloc1st,Dongju2ndRoad,Dieqi,LilinTown,ZhongkaiHigh-techZone,HuichengDistrict, HuizhouCity,China 2|Page EvaluationregardingtotheCoveredListSoftware: Compliance Methodology EvaluationProcessResults Deviceis Inherent compliance ☒ TheChipset(s)usedislimitedtorun theCybersecurityoranti-virus software. Compliance ☒ TheMemoryusedislimitedtorunthe Cybersecurityoranti-virussoftware. Compliance ☒ Thereisstoragecapacitylimitationfor storeorinstalltheCybersecurityor anti-virussoftware. Compliance ☒ Operatingsystemusedislimitedto run,installordelivertheCybersecurity oranti-virussoftware. Compliance Deviceisnot Inherent compliance ☐ EvaluationBasedonSoftware BillofMaterials(SBoM) Seeattached“SBoM“ Note:TheSBoMcontentislimited tothescopeofcoveredlist software(e.g.antivirusand cybersecuritysoftware). ☐ EvaluationBasedonScanfor Softwareonthedevice ☐ EvaluationBasedonFilesystemscan ☐ EvaluationBasedonRunning softwarecheck

Yidongxing(Huizhou)TechnologyCo.,Ltd Bloc1st,Dongju2ndRoad,Dieqi,LilinTown,ZhongkaiHigh-techZone,HuichengDistrict, HuizhouCity,China AttestationStatements NotCoveredEntityApplicant&NotCoveredEquipment To:FederalCommunicationsCommissionDate:Jan.29,26 7435OaklandMillsRoad, Columbia,MD21046,USA Ref:InformationRequiredbySection2.911(d)(5)(i)&(ii) FCCID:2BTTJ-YDX198W Yidongxing(Huizhou)TechnologyCo.,Ltd(“theapplicant”)certifiesthat,asofthedateofthefilingof theapplication,theapplicantisnotidentifiedontheCoveredList,establishedpursuantto§1.50002of referencechapter,asanentityproducing“covered”communicationequipment.Theequipmentfor whichauthorizationissoughtisnot“covered”telecommunicationsequipmentandvideosurveillance equipmentproducedbyentitiesidentifiedontheCommission’sCoveredListthatprohibitedfrom receivinganequipmentauthorizationpursuanttosection§2.903oftheFCCrules. Sincerelyyours, ApplicantSignature PrintedName:CaiyongZhu Title:QualityManager Address:Bloc1st,Dongju2ndRoad,Dieqi,LilinTown,ZhongkaiHigh-techZone,HuichengDistrict,Huizhou City,China Tel.:0752-3991353 Email:[email protected]

Yidongxing(Huizhou)TechnologyCo.,Ltd Address:Bloc1st,Dongju2ndRoad,Dieqi,LilinTown,ZhongkaiHigh-techZone,Huicheng District,HuizhouCity,China (Jan.29,2026) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestfor:FCCID:2BTTJ-YDX198W PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestpermanent confidentialtreatmentoftheexhibitsaccompanyingthiscertificationapplicationasoutlinedbelow: BlockDiagram Schematics OperationalDescription Theaboveexhibitscontaintradesecretsand/orproprietaryinformationthatarenotpubliclyavailableand materialsthattheApplicanthasspentconsiderableeffortsindeveloping.Publicdisclosureofthesemay beharmfultotheApplicantandgiveanunfairadvantagetocompetitorsonthemarket. PursuanttoDA04-1705,theapplicantalsorequeststemporaryconfidentialtreatmentoftheexhibits outlinedbelowforaperiodof(upto180)daysfromthedateofequipmentauthorizationandpriorto marketingintheUnitedStatestopreventtheprematurereleaseofanysensitiveinformation.Applicantis awareoftheirresponsibilitytonotifyDERYCOMintheeventinformationregardingtheproductorthe productismadeavailabletothepublicbeforetherequestedperiodhasexpired.  UserManual Sincerely, (Signature) Title:QualityManager Address:Bloc1st,Dongju2ndRoad,Dieqi,LilinTown,ZhongkaiHigh-techZone,HuichengDistrict, HuizhouCity,China Tel.:0752-3991353 Email:[email protected]

Yidongxing(Huizhou)TechnologyCo.,Ltd Address:Bloc1st,Dongju2ndRoad,Dieqi,LilinTown,ZhongkaiHigh-techZone,Huicheng District,HuizhouCity,China (Jan.30,26) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorizationforFCCID:2BTTJ-YDX198W I,theundersigned,herebyauthorize(ShenzhenBKCTestingCo.,Ltd.)toactonourbehalfinallmatters relatingtothisapplicationforequipmentcertification. Anyactcarriedoutby(ShenzhenBKCTestingCo.,Ltd.)shallhavethesameeffectasourownandI acknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsofcertification,as specifiedbyDERYCOMCERTIFICATIONSERVICES,INC.,stillresideswith(Yidongxing(Huizhou) TechnologyCo.,Ltd). WecertifythatwearenotsubjecttoadenialoffederalbenefitsthatincludesFCCbenefitspursuantto Section5301oftheAnti-DrugAbuseActof1988,21U.S.C.§862,andthatnopartytotheapplication,as definedin47CFR§1.2002(b),issubjecttoadenialoffederalbenefitsthatincludesFCCbenefits pursuanttothatsection. Sincerely, (Signature) (FullnameofcontactpersonlistedonFCC’swebsite)CaiyongZhu (Title):Manager Tel:0752-3991353 Fax:N/A Email:[email protected]

FCCID:2BTTJ-YDX198WExternalPhotos

Label: Model：YDX198W 2BTTJ-YDX198W 194mm 35mm

FCCID:2BTTJ-YDX198WInternalPhotos BTANT

FCCID:2BTTJ-YDX198W RFExposureEvaluation AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1093， UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures,standalone 1-gheadorbodyand10-gextremitySARevaluationforgeneralpopulationexposure conditions,bymeasurementornumericalsimulation,isnotrequiredwhenthe correspondingSARTestExclusionThresholdcondition(s),listedbelow,is(are)satisfied. For100MHzto6GHzandtestseparationdistances≤5.0mm,the1-gand10-gSARtest exclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f (GHz) ]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f (GHz) istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Here, SoSARtestisnotrequired ModeFreque ncy (MHz) Max Power (dBm) Target power W/ tolerance (dBm) Maxtune uppower tolerance (dBm) Max Power (mW) Min. Distanc e (mm) Calc. threshol ds limit BLEGFSK 2402-2.43 -2 ± 1 -10.79435.000.24623.0 2440-1.15-1±101.00005.000.31243.0 2480-1.50-1±101.00005.000.31503.0

Inverted F Antenna Specification Summary ITEMANT SPEC Model Name 2.4G ANT HorizontalVertical 2400MHz 2400MHz2500MHz2400MHz2400MHz 2500MHz Center Frequency -1.26-0.76-0.58-5.25-2.46-1.86 MAX. Gain -0.58dB PolarizationHorizontal and Ve rtical Azimuth Beam Pattern Omni-directional Impedance50 Oh m Antenna Length 38.20mm Manufacture Antenna Photo & Length (mm) 忆东兴（惠州）科技有限公司 YiDongXing(HuiZhou)Technology Co,LTD Yidongxing (Huizhou) Technology Co., Ltd. Address: No. 1, Songqidong Residential Road 2, Lilin Town, Huicheng District, Huizhou City, Guangdong Province Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain(dB) Frequency (MHz) MaxMinAvg 2400-1.26174-30.0801-7.18716 2450-0.765802-36.5604-7.48023 2500-0.585582-22.0315-6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain(dB) Frequency (MHz) MaxMinAvg 2400-5.2537-22.1424-12.4294 2450-2.4652-24.5837-10.4702 2500-1.86120-29.5214-9.20432 Yidongxing (Huizhou) Technology Co., Ltd.

Page1of16 FCCID:2BTTJ-YDX198W FCC_BLE(Part15.247)TestData TableofContents 1.-6dBBandwidth.......................................................................................................................................................2 2.99%OccupiedBandwidth....................................................................................................................................4 3.DutyCycle.................................................................................................................................................................6 4.PeakOutputPower.................................................................................................................................................8 5.PowerSpectralDensity.......................................................................................................................................10 6.Bandedge................................................................................................................................................................12 7.SpuriousEmission.................................................................................................................................................14 Page2of16 1.-6dBBandwidth ConditionAntennaRateFrequency(MHz)-6dBBW(kHz)limit(kHz)Result NVNTANT11Mbps2402.00671.08500Pass NVNTANT11Mbps2440.00669.79500Pass NVNTANT11Mbps2480.00664.75500Pass -6dB_Bandwidth_NVNT_ANT1_1Mbps_2402 -6dB_Bandwidth_NVNT_ANT1_1Mbps_2440 -6dB_Bandwidth_NVNT_ANT1_1Mbps_2480 Page3of16 Page4of16 2.99%OccupiedBandwidth ConditionAntennaRateFrequency(MHz)99%%BW(MHz) NVNTANT11Mbps2402.001.018 NVNTANT11Mbps2440.001.018 NVNTANT11Mbps2480.001.019 99%_Occupied_Bandwidth_NVNT_ANT1_1Mbps_2402 99%_Occupied_Bandwidth_NVNT_ANT1_1Mbps_2440 99%_Occupied_Bandwidth_NVNT_ANT1_1Mbps_2480 Page5of16 Page6of16 3.DutyCycle ConditionAntennaRateFrequency(MHz)Dutycycle(%)Duty_factor NVNTANT11Mbps2402.0068.751.63 NVNTANT11Mbps2440.0070.971.49 NVNTANT11Mbps2480.0065.631.83 Duty_Cycle_NVNT_ANT1_1Mbps_2402 Duty_Cycle_NVNT_ANT1_1Mbps_2440 Duty_Cycle_NVNT_ANT1_1Mbps_2480 Page7of16 Page8of16 4.PeakOutputPower ConditionAntennaRate Frequency (MHz) Max.Conducted Power(dBm) Max.Conducted Power(mW) Limit(mW)Result NVNTANT11Mbps2402.00-2.430.571000Pass NVNTANT11Mbps2440.00-1.150.771000Pass NVNTANT11Mbps2480.00-1.500.711000Pass Peak_Output_Power_NVNT_ANT1_1Mbps_2402 Peak_Output_Power_NVNT_ANT1_1Mbps_2440 Page9of16 Peak_Output_Power_NVNT_ANT1_1Mbps_2480 Page10of16 5.PowerSpectralDensity ConditionAntennaRateFrequency(MHz) PowerSpectral Density(dBm/3kHz) Limit(dBm/3kHz)Result NVNTANT11Mbps2402.00-19.288Pass NVNTANT11Mbps2440.00-20.418Pass NVNTANT11Mbps2480.00-20.698Pass Power_Spectral_Density_NVNT_ANT1_1Mbps_2402 Power_Spectral_Density_NVNT_ANT1_1Mbps_2440 Power_Spectral_Density_NVNT_ANT1_1Mbps_2480 Page11of16 Page12of16 6.Bandedge ConditionAntennaModulation TX_Frequency (MHz) Max. Mark_freq(MHz) Ref_level(dBm) Spurious level(dBm) limit(dBm)Result NVNTANT11Mbps2402.002398.825-3.016-54.910-23.016Pass NVNTANT11Mbps2480.002484.150-3.938-61.305-23.938Pass 1_Reference_Level_NVNT_ANT1_1Mbps_2402 2_Bandedge_NVNT_ANT1_1Mbps_2402 1_Reference_Level_NVNT_ANT1_1Mbps_2480 Page13of16 2_Bandedge_NVNT_ANT1_1Mbps_2480 Page14of16 7.SpuriousEmission ConditionAntennaModulation TX_Frequency (MHz) Ref_level(dBm) Spurious level(dBm) limit(dBm)Result NVNTANT11Mbps2402.00-3.016-43.828-23.016Pass NVNTANT11Mbps2440.00-3.573-43.461-23.573Pass NVNTANT11Mbps2480.00-3.938-42.323-23.938Pass 1_Reference_Level_NVNT_ANT1_1Mbps_2402 2_Spurious_Emission_NVNT_ANT1_1Mbps_2402 1_Reference_Level_NVNT_ANT1_1Mbps_2440 Page15of16 2_Spurious_Emission_NVNT_ANT1_1Mbps_2440 1_Reference_Level_NVNT_ANT1_1Mbps_2480 Page16of16 2_Spurious_Emission_NVNT_ANT1_1Mbps_2480

ShenzhenBKCTestingCo.,Ltd.ReportNo.:BKC25125583ME-1 TestReportTel:4000-875-3820755-84829082Web:Http://www.bkc-lab.comPage1of27 TESTREPORT Applicant:Yidongxing(Huizhou)TechnologyCo.,Ltd Address: Bloc1st,Dongju2ndRoad,Dieqi,LilinTown,ZhongkaiHigh-tech Zone,HuichengDistrict,HuizhouCity,China Manufacturer:Yidongxing(Huizhou)TechnologyCo.,Ltd Address: Bloc1st,Dongju2ndRoad,Dieqi,LilinTown,ZhongkaiHigh-tech Zone,HuichengDistrict,HuizhouCity,China ProductName:Bluetoothvoiceremotecontrol ModelNumber:YDX198/W Trademark:N/A FCCID:2BTTJ-YDX198W TestDate:Dec.19,2025~Dec.26,2025 DateofReport:Dec.26,2025 TestResult: ThisdevicedescribedabovehasbeentestedbyBKC,andthetest resultsshowthattheequipmentundertest(EUT)isincompliancewith theStandardrequirements.Anditisapplicableonlytothetested sampleidentifiedinthereport. TestProcedureUsed: Standards:FCCCFRTitle47Part15SubpartCSection15.247 ANSIC63.10:2020 Preparedby(TestEngineer): CareyZheng Reviewer(Supervisor): CaseyWang Approved(Manager): JerryLiao ShenzhenBKCTestingCo.,Ltd.ReportNo.:BKC25125583ME-1 TestReportTel:4000-875-3820755-84829082Web:Http://www.bkc-lab.comPage2of27 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.BlockDiagram...............................................................................................................................................6 1.7.TestConditions.............................................................................................................................................6 1.8.MeasurementUncertainty(95%confidencelevels,k=2)......................................................................6 1.9.TestFacility....................................................................................................................................................7 1.10.TestEquipment...........................................................................................................................................8 2.Conductedemissionatthemainsterminalstest....................................10 2.1.Limit..............................................................................................................................................................10 2.2.TestSetup....................................................................................................................................................10 2.3.TestProcedure............................................................................................................................................10 2.4.TestResult...................................................................................................................................................10 3.RadiatedSpuriousEmissions...................................................................11 3.1.Limit..............................................................................................................................................................11 3.2.TestSetup....................................................................................................................................................12 3.3.TestProcedure............................................................................................................................................14 3.4.TestResult...................................................................................................................................................15 4.ConductedSpuriousEmissions................................................................20 4.1.Limit..............................................................................................................................................................20 4.2.TestSetup....................................................................................................................................................20 4.3.TestProcedure............................................................................................................................................20 4.4.TestResult...................................................................................................................................................21 5.BandEdgeMeasurement...........................................................................22 5.1.Limit..............................................................................................................................................................22 5.2.Testsetup....................................................................................................................................................22 5.3.TestProcedure............................................................................................................................................22 5.4.TestResult...................................................................................................................................................22 6.-6dBBandwidthand99%BandwidthMeasurement..............................23 6.1.Limit.........................................................................................................................................…

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FCCID:2BTTJ-YDX198WTestPhotos