2BTBF-JK-BT-25002JK Bluetooth module

GuangdongHuizhouJiakangTechnologyCo.,Ltd. SpecificationsApprovalSheet ProductName:JKBluetoothModule ProductModel:P/N:JK-BT-25002 CustomerName: CustomerP/N: Date:2025/7/3 ForCustomerApproval: Manufacturer: HuizhouJiakangTechnologyCo.,Ltd. ServiceAreas:Jiangsu,Zhejiang,Shanghai,Xiamen,Fujian,Anhui, Dongguan,Foshan,Guangzhou,Zhuhai,Zhongshan,Shenzhen Address:11thFloor,Building19-20,ZhongnanInformationIndustryPark, ZhongkaiHigh-TechZone,Huizhou,GuangdongProvince Phone:0752-7364476 JiakangTechnologyGroupComponents:ShenzhenBase,FujianOffice, ShenzhenR&DCenter... Revision1.0 FileNo.2025070311 / 12 /CheckedbyReviewedbyApprovedby Electronic Mechanical GuangdongHuizhouJiakangTechnologyCo.,Ltd. Resume RevisionDetailsDate 1.0 New 2025/7/3 Revision1.0 FileNo.2025070312 / 12 GuangdongHuizhouJiakangTechnologyCo.,Ltd. 1.1 Thechipadoptsa32-bitDSPcentralprocessorwithahardwarefloating-point unit(FPU),featuringaprogrammableprocessorupto240MHz,supporting64- vectorinterruptsand8-levelinterruptpriorityDSPaudioprocessing.Itsupports SBCandAACaudiodecodersforBluetoothaudio,andthemSBCvoicecodecfor Bluetoothhands-freetelephony.ItiscompatiblewithMP2,MP3,WMA,APE,FLAC, AAC,MP4,M4A,WAV,AIF,andAIFCaudioformats.ItincludesoneanalogMIC amplifierwithabuilt-inMICbiasgenerator,supportstwoPDMdigitalMICinputs,a three-channelanalogmultiplexer,andsupportscapless,single-ended,and differentialmodesontheDACpath,withspeakerloadsupportfor16Ωand32Ω. 1.2 Revision1.1 FileNo.2025070313 / 12 GuangdongHuizhouJiakangTechnologyCo.,Ltd. 1.3 Processor 32bit Memory 4MBFlash MIC PowerSupply 2.2Vto5.5V CurrentSupply >1A SpeakerInterface ExternalOscillator 24.0MHz Onboard UARTInterface4pin StandbyCurrent ~20mA WorkingCurrent ~120mA Antenna(RF) 2.4Gonboard antenna Bluetooth Supports V5.1+BR+EDR+BLE specification SupportsMP2,MP3,WMA, APE,FLAC,AAC,MP4,M4A, WAV,AIF,AIFCaudio decoding Operating Temperature -20°Cto70°C Operating Humidity 10%to95%non- condensing Storage Temperature -65 °C to150 °C Board Dimensions 14.91*14.04*1.2mm 1.4 Maincontrolchip:likelya32-bitDSPorRISC-Vcore,withaclockspeedof 120-200MHz,supportslow-poweroperationmode. Bluetoothversion:compatiblewithBluetooth5.0/5.2,supportsdual-mode( BR/EDR+BLE),withatransmissionrangeofupto10-20meters. Audiodecoding:supportscommonformatssuchasSBC,AAC,MP3,and maysupporthigh-definitionaudiocodecs(suchasLDACoraptX). Noisereductiontechnology:integratedhardwarenoisecancellationalgorit hms(e.g.,ENCenvironmentalnoisecancellation),supportsmicrophonearra yinput. Audioenhancement:built-inEQadjustment,3Dsurroundsound,bassboos t,andotherDSPaudioeffects. Revision1.0 FileNo.2025070314 / 12 GuangdongHuizhouJiakangTechnologyCo.,Ltd. Multi-modeoutput:supportsmono/stereooutput,mayfeatureI2S/PCMinte rfacesforexternalDAC. Operatingvoltage:typicalrange1.8V-3.6V,withstandbycurrentpotentially aslowas10μA. Fastchargingsupport:integratedchargingmanagement,supports5V/500 mAcharging,withachargingtimeofabout1-2hours. GPIOexpansion:providesmultipleprogrammableGPIOs,supportsUART/I 2C/SPIcommunicationprotocols. Storagesupport:includesonboardFlashorsupportsexternalSPIFlashfor firmware/configurationstorage. MainlyusedinwirelessaudiodevicessuchasTWSearphones,Bluetoothsp eakers,andin-caraudiosystems. Supportsone-to-two(connectingtwodevices),auto-reconnect,touchbuttons, etc. 2.1 Front Dimensionaltolerancerange:lengthandwidth±0.2mm,thickness Revision1.0FileNo.2025070315 / 12 GuangdongHuizhouJiakangTechnologyCo.,Ltd. Back Dimensionaltolerancerange:lengthandwidth±0.2mm,thickness 2.2 Refertotheattachedpage Revision1.0 FileNo.2025070316 / 12 GuangdongHuizhouJiakangTechnologyCo.,Ltd. 1.UpgradeTool:Jieliprogrammerupgradetool. 2.OperationMethod: ①Connectthewiringasshowninthediagram; ②Opentheprogrammingtool,selectthefirmwaretobeprogrammed, pressthebuttonontheprogrammer,andcheckwhetherthehostPCdetects themoduleandwhetherthewiringiscorrect.Ifthewiringiscorrect,the devicewillshow"online"asshowninthediagram,thenclickthe"Upgrade" buttontostarttheupgrade; Revision1.0 FileNo.2025070317 / 12 GuangdongHuizhouJiakangTechnologyCo.,Ltd. Ifthedevicestatusshows"offline,"checkthewiring,powersupply,and devicedrivers. ③Oncetheprogrammingiscomplete,asshowninthediagram; ④ Afterupgrading,unplugtheprogrammerandpoweronthedeviceagain. Ps:IftheMACaddressisnotrandom,selecttheoptionshowninthe diagram"2notchecked";iftheMACaddressisrandom,select"1checked" asshowninthediagram. Revision1.0 FileNo.2025070318 / 12 GuangdongHuizhouJiakangTechnologyCo.,Ltd. 1.1WarehouseEnvironmentRequirements: 1.1.1Thewarehouseshouldhaveagoodenvironmentfordehumidification, ventilation,andmoistureprevention,keptcleananddry. Exposeditemsshouldbecoveredtopreventdust.Preventrainwateranddirect sunlightfromexposingtheelectronicboards. 1.1.2Thestorageroomforgoodsshouldmeetthefollowingconditions: temperature-10~+40°C,relativehumidity30%~70%. 1.1.3Anti-staticmeasuresshouldbetaken.ESDmatsshouldbeplacedon thematerialhandlingtables,andworkersmustwearESDgloves/braceletswhen handlingelectronicboards. 1.2Itisprohibitedtostoreproductsincorrosivesubstanceslikesulfur, chlorinegas,oracids,asthiswillleadtooxidationofterminalsandwires, reducingsolderabilityandconnectivity. 1.2.1Toavoidtheeffectsofhumidity,dust,etc.,productsshouldbestoredon shelves. 1.2.2Productsstoredinwarehousesshouldbeprotectedfromthermalshock, vibration,anddirectlightexposure. 1.2.3TheoutercasingofthecontrolboardmustmeettheIP3.0protectionlevel. FileNo.20250703Revision1.019 / 12 GuangdongHuizhouJiakangTechnologyCo.,Ltd. 1.1Ensurethatthecircuitboardsurfaceandcomponentsareclean,dry, andnotunderheavypressuretopreventboarddeformation. 1.2Multipleboardswithoutexternalpackagingshouldbeseparatedby isolationpads(ESDmats). 1.3Circuitboardsshouldnotbedirectlystackedtopreventscratchingthe boardsurfaceandcomponents. 1.4Whenhandlingcircuitboards,ESDgloves/braceletsmustbeworn, andtheboard'sedgesshouldbetouchedtoavoidfingerprints contaminatingtheboardsurfaceandplating. 1.5Ifyourcompanyusesourproductsbeyondtheparametersdefinedin thedatasheet,wedonotgu…

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CoveredEquipmentAttestationLetter ForCertificationServiceintheUSA FederalCommunicationsCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoSection2.911(d)(5)(i)-(ii)oftheCommission’sRules(47C.F.R.)weattestas followsfortheproductlistedbelow: FCCIDModelname 2BTBF-JK-BT-25002JK-BT-25002 We, Applicant CompanyName:HuizhouJiaKangTechnologyCo.,Ltd. Address:11thFloor,Building19~20ZhongnanPark ZhongkaiNationalHi-techindustrial DevelopmantZooeHuizhou city,Guangdongprovince,China Phone:13172459540 certifythattheequipmentforwhichauthorizationissoughtisnot“covered”equipment prohibitedfromreceivinganequipmentauthorizationpursuanttosection2.903oftheFCC rules.Thisincludesthecybersecurityandanti-virussoftwareproducedorprovidedby KasperskyLab,Inc.oranyofistsuccessorsandassignees. Wecertifythat,asofthedateofthefilingoftheapplication,theapplicantisnotidentified ontheCoveredListasanentityproducing“covered”equipment. Ifyouhaveanyquestions,pleasefeelfreetocontactusattheaddressshownbelow. Sincerely, 2025-12-1 SignatureDate PrintedNameofSignee:HuaJunChen Company:HuizhouJiaKangTechnology Co.,Ltd. Phone:13172459540 Email:[email protected] Address:11thFloor,Building19~20 ZhongnanParkZhongkaiNationalHi-techin dustrialDevelopmantZooeHuizhou city,Guangdongprovince,China Fax:N/A

HuizhouJiaKangTechnologyCo.,Ltd. RequestforModular/LimitedModularApproval Date:December3,2025 Subject:Manufacturer’sDeclarationfor☒-ModularApproval☐-SplitModularApproval ☐-LimitedModularApproval☐-LimitedSplitModularApproval ConfidentialityRequestfor:______FCCID:2BTBF-JK-BT-25002______ 8BasicRequirements–FCCPart15.212(a)(1) ForItemsMarked“NO(*)”,theLimitedModuleDescriptionMustbeFilledOutontheFollowingPages ModularApprovalRequirementRequirementMet 1.ThemodulartransmittermusthaveitsownRFshielding.Thisisintendedtoensurethatthemodule doesnothavetorelyupontheshieldingprovidedbythedeviceintowhichitisinstalledinorderforall modulartransmitteremissionstocomplywithFCClimits.Itisalsointendedtopreventcoupling betweentheRFcircuitryofthemoduleandanywiresorcircuitsinthedeviceintowhichthemoduleis installed.Suchcouplingmayresultinnon-compliantoperation.Thephysicalcrystalandtuning capacitorsmaybelocatedexternaltotheshieldedradioelements.15.212(a)(1)(i) ☒-YES☐-NO(*) ThemodulecontainsametalshieldwhichcoversallRFcomponentsandcircuitry.Theshieldislocatedonthetopoftheboard nexttoantennaconnector 2.Themodulartransmittermusthavebufferedmodulation/datainputs(ifsuchinputsareprovided)to ensurethatthemodulewillcomplywithFCCrequirementsunderconditionsofexcessivedataratesor over-modulation.15.212(a)(1)(ii) ☒-YES☐-NO(*) Datatothemodulationcircuitisbufferedasdescribedintheoperationaldescriptionprovidedwiththeapplication 3.Themodulartransmittermusthaveitsownpowersupplyregulationonthemodule.Thisisintendedto ensurethatthemodulewillcomplywithFCCrequirementsregardlessofthedesignofthepower supplyingcircuitryinthedeviceintowhichthemoduleisinstalled.15.212(a)(1)(iii) ☒-YES☐-NO(*) Themodulecontainsitsownpowersupplyregulation.Pleaserefertoschematicfiledwiththisapplication 4.Themodulartransmittermustcomplywiththeantennaandtransmissionsystemrequirementsof§§ 15.203,15.204(b),15.204(c),15.212(a),and2.929(b).Theantennamusteitherbepermanently attachedoremploya‘‘unique’’antennacoupler(atallconnectionsbetweenthemoduleandthe antenna,includingthecable).The‘‘professionalinstallation’’provisionof§15.203isnotapplicable tomodulesbutcanapplytolimitedmodularapprovalsunderparagraph15.212(b).15.212(a)(1)(iv) ☒-YES☐-NO(*) Themodule’santennaisPCBantenna,pleaserefertothesamplephoto. 5.Themodulartransmittermustbetestedinastand-aloneconfiguration,i.e.,themodulemustnotbe insideanotherdeviceduringtesting.Thisisintendedtodemonstratethatthemoduleiscapableof complyingwithPart15emissionlimitsregardlessofthedeviceintowhichitiseventuallyinstalled. Unlessthetransmittermodulewillbebatterypowered,itmustcomplywiththeAClineconducted requirementsfoundinSection15.207.ACorDCpowerlinesanddatainput/outputlinesconnectedto themodulemustnotcontainferrites,unlesstheywillbemarketedwiththemodule(seeSection 15.27(a)).Thelengthoftheselinesshallbelengthtypicalofactualuseor,ifthatlengthisunknown,at least10centimeterstoinsurethatthereisnocouplingbetweenthecaseofthemoduleandsupporting equipment.Anyaccessories,peripherals,orsupportequipmentconnectedtothemoduleduringtesting shallbeunmodifiedorcommerciallyavailable(seeSection15.31(i)).15.212(a)(1)(v) ☒-YES☐-NO(*) Themodulewastestedstand-aloneasshownintestsetupphotographsfiledwiththisapplication HuizhouJiaKangTechnologyCo.,Ltd. ModularApprovalRequirementRequirementMet 6.ThemodulartransmittermustbelabeledwithitsownFCCIDnumber,oruseanelectrondisplay(see KDBPublication784748). IfusingapermanentlyaffixedlabelwithitsownFCCIDnumber,iftheFCCIDisnotvisiblewhen themoduleisinstalledinsideanotherdevice,thentheoutsideofthedeviceintowhichthemoduleis installedmustalsodisplayalabelreferringtotheenclosedmodule.Thisexteriorlabelcanusewording suchasthefollowing:“ContainsTransmitterModuleFCCID:XYZMODEL1”or“ContainsFCCID: XYZMODEL1.”Anysimilarwordingthatexpressesthesamemeaningmaybeused.TheGranteemay eitherprovidesuchalabel,anexampleofwhichmustbeincludedintheapplicationforequipment authorization,or,mustprovideadequateinstructionsalongwiththemodulewhichexplainthis requirement.Inthelattercase,acopyoftheseinstructionsmustbeincludedintheapplicationfor equipmentauthorization. IfthemodulartransmitterusesanelectronicdisplayoftheFCCidentificationnumber,theinformation mustbereadilyaccessibleandvisibleonthemodulartransmitteroronthedeviceinwhichitis installed.Ifthemoduleisinstalledinsideanotherdevice,thentheoutsideofthedeviceintowhichthe moduleisinstalledmustdisplayalabelreferringtotheenclosedmodule.Thisexteriorlabelcanuse wordingsuchasthefollowing:“ContainsFCCcertifiedtransmittermodule(s).”Anysimilarwording thatexpressesthesamemeaningmaybeused.Theusermanualmustincludeinstructionsonhowto accesstheelectronicdisplay.Acopyoftheseinstructionsmustbeincludedintheapplicationfor equipmentauthorization.15.212(a)(1)(vi) ☒-YES☐-NO(*) Thereisalabelonthemoduleasshowninthelabelingexhibitfiledwiththisapplication.Hostspecificlabelinginstructionsare shownintheinstallationmanual.filedwiththisapplication. 7.Themodulartransmittermustcomplywithallspecificruleoroperatingrequirementsapplicabletothe transmitter,includingalltheconditionsprovidedintheintegrationinstructionsbythegrantee.Acopy oftheseinstructionsmustbeincludedintheapplicationforequipmentauthorization.Forexample, thereareverystrictoperationalandtimingrequirementsthatmustbemetbeforeatransmitteris authorizedforoperationunderSection15.231.Forinstance,datatransmissionisprohibited,exceptfor operationunderSection15.231(e),inwhichcasethereareseparatefieldstrengthlevelandtiming requirements.Compliancewiththeserequirementsmustbeassured.15.212(a)(1)(vii) ☒-YES☐-NO(*) ThemodulecomplieswithFCCPart15Crequirements.InstructionstotheOEMinstallerareprovidedintheinstallation manualfiledwiththisapplication. 8.ThemodulartransmittermustcomplywithanyapplicableRFexposurerequirements.Forexample, FCCRulesinSections2.1091,2.1093andspecificSectionsofPart15,including15.319(i),15.407(f), 15.253(f)and15.255(g),requirethatUnlicensedPCS,UNIIandmillimeterwavedevicesperform routineenvironmentalevaluationforRFExposuretodemonstratecompliance.Inaddition,spread spect…

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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 2BTBF-JK-BT-25002JK-BT-25002 Fortheproductslistedabove,werequestpermanentconfidentialityforallapplicable exhibitsasthereare:  theOperationalDescription  theBlockDiagram theSchematics Theabovelistedexhibitscontaintradesecretsandproprietaryinformationthatcouldbeof benefittoourcompetitors. Ifyouhaveanyquestions,pleasefeelfreetocontactusattheaddressshownbelow. Sincerely, 2025-12-1 SignatureDate PrintedNameofSignee/Title:HuaJunChen/Manager Company:HuizhouJiaKangTechnologyCo.,Ltd. Address:11thFloor,Building19~20ZhongnanParkZhongkai NationalHi-techindustrialDevelopmantZooeHuizhou city,Guangdongprovince,China Phone:13172459540 Fax:-- Email:[email protected]

ReportNo.:CISRR25111411001 Page 55 of 57 9.EXTERNALANDINTERNALPHOTOS 9.1.ExternalPhotos ReportNo.:CISRR25111411001 Page 56 of 57

Label Size:10mm*4mm FCCID:2BTBF-JK-BT-25002 LabelLocation

ReportNo.:CISRR25111411001 Page 57 of 57 9.2.InternalPhotos ------Endofthereport----- ANT

ReportNo.: CISRR25111411003 Reporttemplateversion:CISE-TR-001-A0Page:1of5 TESTREPORT RFExposureEvaluation ReportNo.: CISRR25111411003 ProjectNo.: CISR251114110 FCCID:2BTBF-JK-BT-25002 Applicant:HuizhouJiaKangTechnologyCo.,Ltd. Address: 11thFloor,Building19~20ZhongnanParkZhongkaiNationalHi-techin dustrialDevelopmantZooeHuizhoucityGuangdongprovinceChina Manufacturer: HuizhouJiaKangTechnologyCo.,Ltd. Address: 11thFloor,Building19~20ZhongnanParkZhongkaiNationalHi-techin dustrialDevelopmantZooeHuizhoucityGuangdongprovinceChina ProductName: JKBluetoothmodule TradeMark: Model/Typereference: JK-BT-25002 ListedModel(s): - Standard:47CFRPart2.1093 Issuedate:November20,2025 Testresult:Complied Reviewedby:MorganTan Approvedby:HansHu Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangceTesting TechnologyCo.,Ltd. ReportNo.: CISRR25111411003 Reporttemplateversion:CISE-TR-001-A0Page:2of5 1.APPLICABLESTANDARD 47CFRPart2.1093:Radiofrequencyradiationexposureevaluation:portabledevices ANSIC95.1–3999:IEEEStandardforSafetyLevelswithRespecttoHumanExposuretoRadioFrequency ElectromagneticFields,3kHzto300GHz. FCCKDBpublication447498D01GeneralRFExposureGuidancev06:MobileandPortableDevicesRF ExposureProceduresandEquipmentAuthorizationPolicies. 47CFRPart1.1307:Actionsthatmayhaveasignificantenvironmentaleffect,forwhichEnvironmental Assessments(EAs)mustbeprepared. 2.REPORTVERSION VersionNo.IssuedateDescription 00November20,2025Original ReportNo.: CISRR25111411003 Reporttemplateversion:CISE-TR-001-A0Page:3of5 3.RADIOSPECIFICATIONDESCRIPTION Bluetooth Supportedtype:BREDRLE-1Mbps LE-2Mbps Note:PleaserefertoRFreportfordetailedtechnicalspecifications 4.SIMULTANEOUSTRANSMISSIONANALYSIS ThesedevicesuseasingletransmittermoduleandantennaforbothBT,BTcannottransmitsimultaneously. ReportNo.: CISRR25111411003 Reporttemplateversion:CISE-TR-001-A0Page:4of5 5.TESTRESULT 5.1.Standalonetransmission Limit: KDB447498D01v06,Clause4.3.1a) For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-g SARtestexclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]*[√f(GHz)]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation31The resultisroundedtoonedecimalplaceforcomparison Thevalues3.0and7.5arereferredtoasnumericthresholdsinstepb)below Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mm, andfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmaccordingto4.1f)isappliedtodetermine SARtestexclusion. Result: Passed TestData Radiotype Frequency (GHz) Maximum output power #1 (dBm) Antenna gain #2 (dBi) Maximum EIRP #3 (dBm) Maximum tune-up EIRP #4 (dBm) Minimum distance (mm) Evaluated value LimitResult BR/EDR2.4020.251.71.952.005.000.49133.00PASS LE2.44-0.871.70.831.005.000.39333.00PASS Note #1:ThisvaluecomesfromtheRFtestreport. #2:Thisvalueisdeclaredbytheapplicant. #3:EIRP=Maximumoutputpower+Antennagain. #4:Thisvalueisdeclaredbytheapplicant. ReportNo.: CISRR25111411003 Reporttemplateversion:CISE-TR-001-A0Page:5of5 5.2.Simultaneoustransmission Limit: KDB447498D01v06,Clause4.3.2,47CFRPart1.1307 InthecaseofxedRFsourcesoperatinginthesametime-averagingperiod,orof multiplemobileorportableRFsourceswithinadeviceoperatinginthesametime averagingperiod,ifthesumofthefractionalcontributionstotheapplicablethresholds islessthanorequalto1asindicatedinthefollowingequation. Where a=numberoffxed,mobile,orportableRFsourcesclaimingexemptionusingparagraph (b)(3)(i)(B)ofthissectionforP,includingexistingexempttransmittersandthosebeing added. b=numberoffxed,mobile,orportableRFsourcesclaimingexemptionusingparagraph (b)(3)(i)(C)ofthissectionforThresholdERP,includingexistingexempttransmittersand thosebeingadded. c=numberofexistingfixed,mobile,orportableRFsourceswithknownevaluationforthespeci edminimumdistanceincludingexistingevaluatedtransmitters. P j =theavailablemaximumtime-averagedpowerortheERP,whicheverisgreater,forxed, mobile,orportableRFsourceiatadistancebetween0.5cmand40cm(inclusive). P th,j =theexemptionthresholdpower(P)accordingtoparagraph(b)(3)(i)(B)ofthissectionfor xed,mobile,orportableRFsourcei. ERP j =theERPoffixed,mobile,orportableRFsourcej. ERP th,j =exemptionthresholdERPforfixed,mobile,orportableRFsourcej,atadistanceofat leastλ/2πaccordingtotheapplicableformulaofparagraph(b)(3)(i)(C)ofthissection. Evaluated k =themaximumreportedSARorMPEoffixed,mobile,orportableRFsourcekeither inthedeviceoratthetransmittersitefromanexistingevaluationatthelocationofexposure. ExposureLimit k =eitherthegeneralpopulation/uncontrolledmaximumpermissibleexposure (MPE)orspecicabsorptionrate(SAR)limitforeachxed,mobile,orportableRFsourcek, asapplicablefrom§1.1310ofthischapter. Result:NotApplicable --------EndofReport--------

Productspecification QuickReferenceDate Antennamoduleonthesystemboard Antennatype PCB Frequency Ant.PortInputPwr.(dBm 2.45GHz )0(Typ.BTclass2outputpower) Tot.Rad.Pwr.(dBm) -2.3(Inputpwr?losspwr) PeakEIRP(dBm) 1.3 Directivity(dBi) 1(alldirectionantenna) Efficiency(dB) -2.3(58.5%) Gain(dBi) 1.7(PeakGainXZ-plane) MaximumPower(dBm) 1.3(XY-plane) MinimumPower(dBm) -4(XY-plane) Avg.Power(dBm) -0.5(XY-plane) Max/MinRatio(dB) 5.3(XY-plane) Max/AvgRatio(dB) 1.8(XY-plane) Min/AvgRatio(dB)-3.5(XY-plane) AverageGain(dB)-0.5(AvgGainXY-plane) 13.48m Allthetechnicaldataandinformationcontainedhereinaresubjecttochangewithoutpriornotice Antenna Layout &module on the system board m 2.96mm 4.77mm 10.50mm AntennaGain GainTable XY-plan Uni in dBi 2.44GHz eXZ-planeYZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. ModuleBoard 1.3-0.51.7-3.81.1-3.058.5% HuizhouJiakangTechnologyCo.,Ltd. GuangdongProvince,HuizhouCity,ZhongkaiHigh-techZone,Zhongnan InformationIndustrialPark,Building19,2ndFloor,Building19,1 1thFloor,Building20,11thFloor ReturnLoss TheEnvironmentofAntennaRadiationPattern VNAPort2 Turningsupport AUT Walkingchannel HomAntenna VNAPort1 MatalShiokdingRoom DoorAbsorber 3D radiation pattern diagram XZ-plane YZ-plane XY-plane

ReportNo.:CISRR25111411002 Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangce TestingTechnologyCo.,Ltd. Page1of40 TESTREPORT ReportNo.CISRR25111411002 ProjectNo.CISR251114110 FCCID2BTBF-JK-BT-25002 ApplicantHuizhouJiaKangTechnologyCo.,Ltd. Address 11thFloor,Building19~20ZhongnanParkZhongkaiNationalHi-techin dustrialDevelopmantZooeHuizhoucityGuangdongprovinceChina ManufacturerHuizhouJiaKangTechnologyCo.,Ltd. Address 11thFloor,Building19~20ZhongnanParkZhongkaiNationalHi-techin dustrialDevelopmantZooeHuizhoucityGuangdongprovinceChina ProductNameJKBluetoothmodule Trademark Model/TypereferenceJK-BT-25002 ListedModel(s)- Standard 47CFRPart15.247 DateofsamplereceiptNovember14,2025 TestdateNovember14,2025toNovember18,2025 IssuedateNovember20,2025 TestresultComplied Reviewedby:MorganTan Approvedby:HansHu ReportNo.:CISRR25111411002 Page 2 of 40 Contents 1.STANDARDANDAPPLICABLETESTMETHODS........................................................................................3 2.REPORTVERSION..........................................................................................................................................3 3.TESTDESCRIPTION.......................................................................................................................................4 4.SUMMARY........................................................................................................................................................5 4.1.ProductDescription*..................................................................................................................................5 4.2.RadioSpecificationDescription*..............................................................................................................5 4.3.ModificationofEUT.....................................................................................................................................6 4.4.Deviationfromstandards...........................................................................................................................6 4.5.TestingSite...................................................................................................................................................6 5.TESTCONFIGURATION.................................................................................................................................7 5.1.Testfrequencylist.......................................................................................................................................7 5.2.Descriptionsoftestmode...........................................................................................................................7 5.3.Supportunitusedintestconfiguration....................................................................................................7 5.4.Testsampleinformation.............................................................................................................................7 5.5.Environmentalconditions...........................................................................................................................7 5.6.Statementofthemeasurementuncertainty.............................................................................................7 5.7.EquipmentUsedduringtheTest................................................................................................................8 6.TESTRESULTS.............................................................................................................................................10 6.1.EvaluationResults(Evaluation)...............................................................................................................10 6.1.1.AntennaRequirement............................................................................................................................10 6.2.RadioSpectrumMatterTestResults(RF)...............................................................................................11 6.2.1.6dBBandwidth........................................................................................................................................11 6.2.2.MaximumConductedOutputPower.....................................................................................................12 6.2.3.PowerSpectralDensity..........................................................................................................................13 6.2.4.Conductedbandedgeandspuriousemission...................................................................................14 6.2.5.Radiatedbandedgeemission...............................................................................................................15 6.2.6.RadiatedSpuriousEmission(below1GHz).........................................................................................21 6.2.7.RadiatedSpuriousEmission(Above1GHz)........................................................................................25 7.APPENDIXREPORT......................................................................................................................................33 7.1.ConductedOutputPower.........................................................................................................................33 7.2.6dBBandwidth...........................................................................................................................................35 7.3.ConductedSpurious&BandEdgeEmission.........................................................................................36 7.4.DutyCycle..................................................................................................................................................39 7.5.PowerSpectralDensity.............................................................................................................................40 ReportNo.:CISRR25111411002 Page 3 of …

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ReportNo.:CISRR25111411001 Page 54 of 57 8.TESTSETUPPHOTOS Radiatedbandedgeemission RadiatedSpuriousEmission(Above1GHz) RadiatedSpuriousEmission(below1GHz)