2BUK8-JLCH2001Electronic piano

InternalPhotos FCCID:2BUK8-JLCH2001 PCBAnt

TestPhoto FCCID:2BUK8-JLCH2001

0.6mm ~ 天线具体尺寸如下图（板材为两层FR4,板厚 ）： 图 Nano Dongle PIFA天线 天线性能S11如下，工作频段覆盖整个2.4G ISM频段: 图 Normal Module Wiggle天线S11 2D和3D增益如下 -13.50 -9.50 -5.50 -1.50 90 60 30 0 -30 -60 -90 -120 -150 -180 150 120 Ansoft Corporation m1 m2 Curve Info dB(GainTotal) Setup1 : Sweep1 Phi='0deg' dB(GainTotal) Setup1 : Sweep1 Phi='90deg' Name ThetaAngMag m10.00000.00000.5547 m2180.0000 180.00000.5531 图 Normal Module Wiggle天线增益

Page49of60 8.NumberofHoppingChannel(Hopping) ConditionAntennaModulationHoppingNumLimitResult NVNTANT11-DH17915Pass NVNTANT12-DH17915Pass NVNTANT13-DH17915Pass Number_of_Hopping_Channel_(Hopping)_NVNT_ANT1_1-DH1_Hopping Number_of_Hopping_Channel_(Hopping)_NVNT_ANT1_2-DH1_Hopping Number_of_Hopping_Channel_(Hopping)_NVNT_ANT1_3-DH1_Hopping Page50of60 Page51of60 9.DwellTime(Hopping) ConditionAntennaPacketTypePulseTime(ms)HopsDwellTime(ms)Limit(s)Result NVNTANT11-DH10.390320.00124.8000.40Pass NVNTANT12-DH10.400317.00126.8000.40Pass NVNTANT13-DH10.400318.00127.2000.40Pass NVNTANT11-DH31.650156.00257.4000.40Pass NVNTANT11-DH52.90096.00278.4000.40Pass NVNTANT12-DH31.660163.00270.5800.40Pass NVNTANT12-DH52.900107.00310.3000.40Pass NVNTANT13-DH31.660165.00273.9000.40Pass NVNTANT13-DH52.910102.00296.8200.40Pass Dwelltime=Pulsetime(ms)×(1600÷2÷79)x31.6SecondforDH1,2-DH1,3-DH1 Dwelltime=Pulsetime(ms)×(1600÷4÷79)x31.6SecondforDH3,2-DH3,3-DH3 Dwelltime=Pulsetime(ms)×(1600÷6÷79)x31.6SecondforDH5,2-DH5,3-DH5 Dwell_Time_(Hopping)_NVNT_ANT1_1-DH1_2441_00_One_Burst_Time Dwell_Time_(Hopping)_NVNT_ANT1_1-DH1_2441_00_Accumulated Page52of60 Dwell_Time_(Hopping)_NVNT_ANT1_2-DH1_2441_00_One_Burst_Time Dwell_Time_(Hopping)_NVNT_ANT1_2-DH1_2441_00_Accumulated Page53of60 Dwell_Time_(Hopping)_NVNT_ANT1_3-DH1_2441_00_One_Burst_Time Dwell_Time_(Hopping)_NVNT_ANT1_3-DH1_2441_00_Accumulated Page54of60 Dwell_Time_(Hopping)_NVNT_ANT1_1-DH3_2441_00_One_Burst_Time Dwell_Time_(Hopping)_NVNT_ANT1_1-DH3_2441_00_Accumulated Page55of60 Dwell_Time_(Hopping)_NVNT_ANT1_1-DH5_2441_00_One_Burst_Time Dwell_Time_(Hopping)_NVNT_ANT1_1-DH5_2441_00_Accumulated Page56of60 Dwell_Time_(Hopping)_NVNT_ANT1_2-DH3_2441_00_One_Burst_Time Dwell_Time_(Hopping)_NVNT_ANT1_2-DH3_2441_00_Accumulated Page57of60 Dwell_Time_(Hopping)_NVNT_ANT1_2-DH5_2441_00_One_Burst_Time Dwell_Time_(Hopping)_NVNT_ANT1_2-DH5_2441_00_Accumulated Page58of60 Dwell_Time_(Hopping)_NVNT_ANT1_3-DH3_2441_00_One_Burst_Time Dwell_Time_(Hopping)_NVNT_ANT1_3-DH3_2441_00_Accumulated Page59of60 Dwell_Time_(Hopping)_NVNT_ANT1_3-DH5_2441_00_One_Burst_Time Dwell_Time_(Hopping)_NVNT_ANT1_3-DH5_2441_00_Accumulated Page60of60

Page34of60 1_Reference_Level_Hopping_NVNT_ANT1_1-DH1_Hopping 2_Band_Edge_(Hopping)_NVNT_ANT1_1-DH1_Hopping Page35of60 1_Reference_Level_NVNT_ANT1_2-DH1_2402_00 2_Bandedge_NVNT_ANT1_2-DH1_2402_00 Page36of60 1_Reference_Level_Hopping_NVNT_ANT1_2-DH1_Hopping 2_Band_Edge_(Hopping)_NVNT_ANT1_2-DH1_Hopping Page37of60 1_Reference_Level_NVNT_ANT1_2-DH1_2480_00 2_Bandedge_NVNT_ANT1_2-DH1_2480_00 Page38of60 1_Reference_Level_Hopping_NVNT_ANT1_2-DH1_Hopping 2_Band_Edge_(Hopping)_NVNT_ANT1_2-DH1_Hopping Page39of60 1_Reference_Level_NVNT_ANT1_3-DH1_2402_00 2_Bandedge_NVNT_ANT1_3-DH1_2402_00 Page40of60 1_Reference_Level_Hopping_NVNT_ANT1_3-DH1_Hopping 2_Band_Edge_(Hopping)_NVNT_ANT1_3-DH1_Hopping Page41of60 1_Reference_Level_NVNT_ANT1_3-DH1_2480_00 2_Bandedge_NVNT_ANT1_3-DH1_2480_00 Page42of60 1_Reference_Level_Hopping_NVNT_ANT1_3-DH1_Hopping 2_Band_Edge_(Hopping)_NVNT_ANT1_3-DH1_Hopping Page43of60 Page44of60 7.CarrierFrequenciesSeparation(Hopping) ConditionAntennaModulationFrequency(MHz) Hopping NO.0 (MHz) Hopping NO.1 (MHz) CarrierFrequencies Separation(MHz) Limit(MHz)Result NVNTANT11-DH12402.002401.8522402.8481.000.880Pass NVNTANT11-DH12441.002440.8672441.8510.980.880Pass NVNTANT11-DH12480.002478.8582479.8480.990.879Pass NVNTANT12-DH12402.002401.8522402.8511.000.837Pass NVNTANT12-DH12441.002440.8462441.8541.010.837Pass NVNTANT12-DH12480.002478.8492479.8541.000.835Pass NVNTANT13-DH12402.002401.8552402.8571.000.832Pass NVNTANT13-DH12441.002440.8522441.8511.000.830Pass NVNTANT13-DH12480.002478.8522479.8631.010.830Pass Carrier_Frequencies_Separation_(Hopping)_NVNT_ANT1_1-DH1_Hopping Carrier_Frequencies_Separation_(Hopping)_NVNT_ANT1_1-DH1_Hopping Page45of60 Carrier_Frequencies_Separation_(Hopping)_NVNT_ANT1_1-DH1_Hopping Carrier_Frequencies_Separation_(Hopping)_NVNT_ANT1_2-DH1_Hopping Page46of60 Carrier_Frequencies_Separation_(Hopping)_NVNT_ANT1_2-DH1_Hopping Carrier_Frequencies_Separation_(Hopping)_NVNT_ANT1_2-DH1_Hopping Page47of60 Carrier_Frequencies_Separation_(Hopping)_NVNT_ANT1_3-DH1_Hopping Carrier_Frequencies_Separation_(Hopping)_NVNT_ANT1_3-DH1_Hopping Page48of60 Carrier_Frequencies_Separation_(Hopping)_NVNT_ANT1_3-DH1_Hopping

Page18of60 Peak_Output_Power_NVNT_ANT1_1-DH1_2480_00 Peak_Output_Power_NVNT_ANT1_2-DH1_2402_00 Peak_Output_Power_NVNT_ANT1_2-DH1_2441_00 Page19of60 Peak_Output_Power_NVNT_ANT1_2-DH1_2480_00 Peak_Output_Power_NVNT_ANT1_3-DH1_2402_00 Page20of60 Peak_Output_Power_NVNT_ANT1_3-DH1_2441_00 Peak_Output_Power_NVNT_ANT1_3-DH1_2480_00 Page21of60 Page22of60 5.SpuriousEmissions ConditionAntennaModulationTXModeRef_level(dBm) Spurious MAX.Value(dBm) LimitResult NVNTANT11-DH12402.00-0.168-48.245-20.168Pass NVNTANT11-DH12441.00-0.517-46.771-20.517Pass NVNTANT11-DH12480.00-1.694-45.407-21.694Pass NVNTANT12-DH12402.00-0.164-47.298-20.164Pass NVNTANT12-DH12441.00-0.488-47.086-20.488Pass NVNTANT12-DH12480.00-1.711-46.085-21.711Pass NVNTANT13-DH12402.00-0.182-38.910-20.182Pass NVNTANT13-DH12441.00-0.519-48.054-20.519Pass NVNTANT13-DH12480.00-1.704-46.699-21.704Pass 1_Reference_Level_NVNT_ANT1_1-DH1_2402_00 2_Spurious_Emissions_NVNT_ANT1_1-DH1_2402_00 Page23of60 1_Reference_Level_NVNT_ANT1_1-DH1_2441_00 2_Spurious_Emissions_NVNT_ANT1_1-DH1_2441_00 1_Reference_Level_NVNT_ANT1_1-DH1_2480_00 Page24of60 2_Spurious_Emissions_NVNT_ANT1_1-DH1_2480_00 1_Reference_Level_NVNT_ANT1_2-DH1_2402_00 Page25of60 2_Spurious_Emissions_NVNT_ANT1_2-DH1_2402_00 1_Reference_Level_NVNT_ANT1_2-DH1_2441_00 Page26of60 2_Spurious_Emissions_NVNT_ANT1_2-DH1_2441_00 1_Reference_Level_NVNT_ANT1_2-DH1_2480_00 Page27of60 2_Spurious_Emissions_NVNT_ANT1_2-DH1_2480_00 1_Reference_Level_NVNT_ANT1_3-DH1_2402_00 Page28of60 2_Spurious_Emissions_NVNT_ANT1_3-DH1_2402_00 1_Reference_Level_NVNT_ANT1_3-DH1_2441_00 Page29of60 2_Spurious_Emissions_NVNT_ANT1_3-DH1_2441_00 1_Reference_Level_NVNT_ANT1_3-DH1_2480_00 Page30of60 2_Spurious_Emissions_NVNT_ANT1_3-DH1_2480_00 Page31of60 6.Bandedge ConditionAntennaModulationTXModeRef_level(dBm)BandedgeMAX.ValueLimitResult NVNTANT11-DH12402.00-0.168-48.040-20.168Pass NVNTANT11-DH1Hopping_LCH-0.095-48.344-20.095Pass NVNTANT11-DH12480.00-1.694-59.590-21.694Pass NVNTANT11-DH1Hopping_HCH-0.108-58.036-20.108Pass NVNTANT12-DH12402.00-0.164-47.782-20.164Pass NVNTANT12-DH1Hopping_LCH-0.162-48.470-20.162Pass NVNTANT12-DH12480.00-1.711-59.875-21.711Pass NVNTANT12-DH1Hopping_HCH0.036-57.803-19.964Pass NVNTANT13-DH12402.00-0.182-47.250-20.182Pass NVNTANT13-DH1Hopping_LCH-0.177-48.741-20.177Pass NVNTANT13-DH12480.00-1.704-59.269-21.704Pass NVNTANT13-DH1Hopping_HCH-0.047-60.182-20.047Pass 1_Reference_Level_NVNT_ANT1_1-DH1_2402_00 2_Bandedge_NVNT_ANT1_1-DH1_2402_00 Page32of60 1_Reference_Level_Hopping_NVNT_ANT1_1-DH1_Hopping 2_Band_Edge_(Hopping)_NVNT_ANT1_1-DH1_Hopping Page33of60 1_Reference_Level_NVNT_ANT1_1-DH1_2480_00 2_Bandedge_NVNT_ANT1_1-DH1_2480_00

FCCIDEDR FCC_BT(Part15.247)TestData ReportNo.:BKC26010305AE-2 FCCID:2BUK8-JLCH2001 TableofContents 1.DutyCycle.....................................................................................................................................................................2 2.-20dBBandwidth..........................................................................................................................................................7 3.99%OccupiedBandwidth..........................................................................................................................................12 4.PeakOutputPower.....................................................................................................................................................17 5.SpuriousEmissions.....................................................................................................................................................22 6.Bandedge....................................................................................................................................................................31 7.CarrierFrequenciesSeparation(Hopping).................................................................................................................44 8.NumberofHoppingChannel(Hopping)....................................................................................................................49 9.DwellTime(Hopping).................................................................................................................................................51 Page2of60 1.DutyCycle ConditionAntennaRateFrequency(MHz)Dutycycle(%)Duty_factor NVNTANT11-DH12402.0030.165.21 NVNTANT11-DH12441.0031.754.98 NVNTANT11-DH12480.0030.655.14 NVNTANT12-DH12402.0033.334.77 NVNTANT12-DH12441.0033.334.77 NVNTANT12-DH12480.0032.264.91 NVNTANT13-DH12402.0030.655.14 NVNTANT13-DH12441.0031.754.98 NVNTANT13-DH12480.0031.754.98 Duty_Cycle_NVNT_ANT1_1-DH1_2402 Duty_Cycle_NVNT_ANT1_1-DH1_2441 Page3of60 Duty_Cycle_NVNT_ANT1_1-DH1_2480 Duty_Cycle_NVNT_ANT1_2-DH1_2402 Duty_Cycle_NVNT_ANT1_2-DH1_2441 Page4of60 Duty_Cycle_NVNT_ANT1_2-DH1_2480 Duty_Cycle_NVNT_ANT1_3-DH1_2402 Page5of60 Duty_Cycle_NVNT_ANT1_3-DH1_2441 Duty_Cycle_NVNT_ANT1_3-DH1_2480 Page6of60 Page7of60 2.-20dBBandwidth ConditionAntennaModulationFrequency(MHz)-20dBBW(MHz)iflargerthanCFS NVNTANT11-DH12402.000.880No NVNTANT11-DH12441.000.880No NVNTANT11-DH12480.000.879No NVNTANT12-DH12402.001.256Yes NVNTANT12-DH12441.001.256Yes NVNTANT12-DH12480.001.252Yes NVNTANT13-DH12402.001.248Yes NVNTANT13-DH12441.001.245Yes NVNTANT13-DH12480.001.245Yes -20dB_Bandwidth_NVNT_ANT1_1-DH1_2402_00 -20dB_Bandwidth_NVNT_ANT1_1-DH1_2441_00 Page8of60 -20dB_Bandwidth_NVNT_ANT1_1-DH1_2480_00 -20dB_Bandwidth_NVNT_ANT1_2-DH1_2402_00 -20dB_Bandwidth_NVNT_ANT1_2-DH1_2441_00 Page9of60 -20dB_Bandwidth_NVNT_ANT1_2-DH1_2480_00 -20dB_Bandwidth_NVNT_ANT1_3-DH1_2402_00 Page10of60 -20dB_Bandwidth_NVNT_ANT1_3-DH1_2441_00 -20dB_Bandwidth_NVNT_ANT1_3-DH1_2480_00 Page11of60 Page12of60 3.99%OccupiedBandwidth ConditionAntennaModulationFrequency(MHz)99%%BW(MHz) NVNTANT11-DH12402.000.823 NVNTANT11-DH12441.000.824 NVNTANT11-DH12480.000.824 NVNTANT12-DH12402.001.165 NVNTANT12-DH12441.001.164 NVNTANT12-DH12480.001.166 NVNTANT13-DH12402.001.148 NVNTANT13-DH12441.001.148 NVNTANT13-DH12480.001.145 99%_Occupied_Bandwidth_NVNT_ANT1_1-DH1_2402_00 99%_Occupied_Bandwidth_NVNT_ANT1_1-DH1_2441_00 Page13of60 99%_Occupied_Bandwidth_NVNT_ANT1_1-DH1_2480_00 99%_Occupied_Bandwidth_NVNT_ANT1_2-DH1_2402_00 99%_Occupied_Bandwidth_NVNT_ANT1_2-DH1_2441_00 Page14of60 99%_Occupied_Bandwidth_NVNT_ANT1_2-DH1_2480_00 99%_Occupied_Bandwidth_NVNT_ANT1_3-DH1_2402_00 Page15of60 99%_Occupied_Bandwidth_NVNT_ANT1_3-DH1_2441_00 99%_Occupied_Bandwidth_NVNT_ANT1_3-DH1_2480_00 Page16of60 Page17of60 4.PeakOutputPower ConditionAntennaModulation Frequency (MHz) Max.Conducted Power(dBm) Max.Conducted Power(mW) Limit(mW)Result NVNTANT11-DH12402.00-0.150.971000Pass NVNTANT11-DH12441.00-0.480.901000Pass NVNTANT11-DH12480.00-1.670.681000Pass NVNTANT12-DH12402.000.771.19125Pass NVNTANT12-DH12441.000.411.10125Pass NVNTANT12-DH12480.00-0.770.84125Pass NVNTANT13-DH12402.001.311.35125Pass NVNTANT13-DH12441.000.991.26125Pass NVNTANT13-DH12480.00-0.160.96125Pass Peak_Output_Power_NVNT_ANT1_1-DH1_2402_00 Peak_Output_Power_NVNT_ANT1_1-DH1_2441_00

ShenzhenBKCTestingCo.,Ltd.ReportNo.:BKC26010305AE-2 TestReportTel:4000-875-3820755-84829082Web:Http://www.bkc-lab.comPage1of31 TESTREPORT Applicant:DongguanshijulvtemaoyiCo.,Ltd. Address: Room106,No.25,ChangfuRoad,Changshantou,QingxiTown, DongguanCity,GuangdongProvince,China. Manufacturer: DongguanshijulvtemaoyiCo.,Ltd. Address: Room106,No.25,ChangfuRoad,Changshantou,QingxiTown, DongguanCity,GuangdongProvince,China. ProductName:Electronicpiano ModelNumber: JLCH2001 (Othermodelspleaseseepage5) Trademark:JLCH/TEKUAI FCCID:2BUK8-JLCH2001 TestDate: Dec.31,2025–Jan.21,2026 DateofReport: Jan.21,2026 TestResult: ThisdevicedescribedabovehasbeentestedbyBKC,andthetest resultsshowthattheequipmentundertest(EUT)isincompliance withtheStandardrequirements.Anditisapplicableonlytothetested sampleidentifiedinthereport. TestProcedureUsed: Standards:FCCCFRTitle47Part15SubpartCSection15.247 ANSIC63.10:2020 Preparedby(TestEngineer): StenHuang Approved(Manager): CaseyWang Approved(Manager): JerryLiao ShenzhenBKCTestingCo.,Ltd.ReportNo.:BKC26010305AE-2 TestReportTel:4000-875-3820755-84829082Web:Http://www.bkc-lab.comPage2of31 TABLEOFCONTENT 1.GeneralInformation......................................................................................5 1.1.DescriptionofDevice(EUT).......................................................................................................................5 1.2.ChannelList..................................................................................................................................................5 1.3.Summaryoftestresult................................................................................................................................6 1.4.SpecialAccessoriesandAuxiliaryEquipment........................................................................................6 1.5.Testmode......................................................................................................................................................6 1.6.Testconfiguration.........................................................................................................................................7 1.7.BlockDiagram...............................................................................................................................................7 1.8.TestConditions.............................................................................................................................................7 1.9.MeasurementUncertainty(95%confidencelevels,k=2)......................................................................8 1.10.TestFacility..................................................................................................................................................8 1.11.TestEquipment...........................................................................................................................................9 2.Conductedemissionatthemainsterminalstest....................................11 2.1.Limit..............................................................................................................................................................11 2.2.TestSetup....................................................................................................................................................11 2.3.TestProcedure............................................................................................................................................11 2.4.TestResult..................................................................................................................................................12 3.RadiatedSpuriousEmissions...................................................................14 3.1.Limit..............................................................................................................................................................14 3.2.TestSetup....................................................................................................................................................15 3.3.TestProcedure............................................................................................................................................17 3.4.TestResult...................................................................................................................................................18 4.MaximumPeakOutputPower....................................................................24 4.1.Limit..............................................................................................................................................................24 4.2.TestSetup....................................................................................................................................................24 4.3.TestProcedure............................................................................................................................................24 4.4.TestResult...................................................................................................................................................24 5.-20dBBandwidthMeasurement...............................................................25 5.1.Limit..............................................................................................................................................................25 5.2.TestSetup....................................................................................................................................................25 5.3.TestProcedure............................................................................................................................................25 5.4.TestResult...................................................................................................................................................25 6.CarrierFrequencySeparationTest.....................................…

Text truncated - open the document above for the full version.

FCCID:2BUK8-JLCH2001 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, SoaSARtestisnotrequired ModeFrequen cy (MHz) Max Power (dBm) Target power W/tolerance (dBm) Maxtune uppower tolerance (dBm) Max Power (mW) Min. Distance (mm) Calc. thresholds limit EDR GFSK 2402-0.15 -0.9±1 0.11.02335.000.31723.0 2441-0.48 -0.9±1 0.11.02335.000.31983.0 2480-1.67-0.9±10.11.02335.000.32233.0 Π /4-DQ PSK 24020.770±111.25895.000.39023.0 24410.41 0±1 11.25895.000.39343.0 2480-0.77 0±1 11.25895.000.39653.0 8-DPS K 24021.310.5±11.51.41255.000.43783.0 24410.990.5±11.51.41255.000.44143.0 2480-0.16 0.5±1 1.51.41255.000.44493.0 BLEGFSK 2402-0.11 0±1 11.25895.000.39023.0 2440-0.250±111.25895.000.39333.0 2480-0.290±111.25895.000.39653.0

DongguanshijulvtemaoyiCo.,Ltd. Address:Room106,No.25,ChangfuRoad,Changshantou,QingxiTown,DongguanCity, GuangdongProvince,China. FileNo.:2026SNUSDA002 U.S.AgentLetterofAttestation To:FederalCommunicationsCommission 7435OaklandMillsRoad,Columbia,MD21046,USA Date:Feb.3,26 Ref: AttestationStatement–Part 2.911(d)(7)filing FCCID:2BUK8-JLCH2001 [DongguanshijulvtemaoyiCo.,Ltd.](“theapplicant”)certifiesthat,asofthedateofthefilingofthe application,[TTSMARKETINC.](“theagent”)isourdesignatedU.S.agentforserviceofprocess fortheabovereferenceFCCID.Theapplicantacceptstomaintainanagentforserviceofprocess intheUnitedStatesfornolessthanoneyearaftereitherthegranteehaspermanentlyterminated allmarketingandimportationoftheapplicableequipmentwithintheU.S.,ortheconclusionofany Commission-relatedadministrativeorjudicialproceedinginvolvingtheequipment,whicheverislater. TheapplicantfurtheracknowledgesitisourresponsibilitytoinformtheFCCwhenevertheagent informationchanges. [TTSMARKETINC.]("theagent)understanditistheagent'sobligationtoacceptserviceofprocess intheUnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddress. DesignatedU.S.Agent CompanyName:TTSMARKETINC. FRN:0036806057 GC:N/A Address:1178BroadwaySte324,NewYork,NY 10001.USA Signature: ContactPerson:MaverickLim Tel:001-(646)305-2908Email:[email protected] Applicant CompanyName:DongguanshijulvtemaoyiCo.,Ltd. FRN:0037914827 Address:Room106,No.25,ChangfuRoad, Changshantou,QingxiTown,DongguanCity, GuangdongProvince,China Signature: ContactPerson:ZuoBaoyu Tel:13711935581Email:[email protected]

Label: Electronicpiano Model：JLCH2001 FCCID:2BUK8-JLCH2001

FCCID:2BUK8-JLCH2001ExternalPhotos

Dongguanshijulvtemaoyi Co., Ltd. Address:Room 106, No. 25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province, China. (Feb. 03, 2026) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject:Confidentiality Request for: FCC ID: 2BUK8-JLCH2001 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request permanent confidential treatment of the exhibits accompanying this certification application as outlined below :  Block Diagram  Schematics  Operational Description The above exhibits contain trade secrets and/or proprietary information that are not publicly available and materials that the Applicant has spent considerable efforts in developing. Public disclosure of these may be harmful to the Applicant and give an unfair advantage to competitors on the market. Pursuant to DA 04-1705, the applicant also requests temporary confidential treatment of the exhibits outlined below for a period of (up to 180) days from the date of equipment authorization and prior to marketing in the United States to prevent the premature release of any sensitive information. Applicant is aware of their responsibility to notify DERYCOM in the event information regarding the product or the product is made available to the public before the requested period has expired.  User Manual Sincerely, (Signature) Title: Sales Manager Address:Room 106, No. 25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province Tel.:13711935581 Email:[email protected]

DongguanshijulvtemaoyiCo.,Ltd. ProductSimilarityDeclaration Productname:Electronicpiano Modelname:JLCH2001,JLCH2002,JLCH2003,JLCH2004, JLCH2005,JLCH2006,JLCH2007,JLCH2008,JLCH1001,JLCH1002, JLCH1003,JLCH1004,JLCH1005,JLCH1006,JLCH1007,JLCH1008, JLCH1009,JLCH1010,JLCH1011,JLCH1012,JLCH1013,JLCH1014, JLCH1015,JLCH1016,JLCH1017,JLCH1018,JLCH1019,JLCH1020, JLCH1021,JLCH1022,JLCH1023,JLCH1024,JLCH1025,JLCH1026, JLCH1027,JLCH1028,JLCH1029,JLCH1030 Trademark:JLCH/TEKUAI FCCID:2BUK8-JLCH2001 We(DongguanshijulvtemaoyiCo.,Ltd.)herebystatethatallthe modelsareelectricalidenticalincludingthesamesoftware parameterandhardwaredesign(i.e.,circuitdesign,PCBLayout, RFmodule/circuit,antennatype(s)andantennalocation, componentsonPCB,etc.,),samemechanicalstructureand design(includingproductenclosure,materials,etc.,),theonly differencearethemodelnumberandthecolor. Signature: Name:ZuoBaoyu Title:SalesManager Place,date:Shenzhen,2026.02.03

Dongguanshijulvtemaoyi Co., Ltd. Address:Room 106, No. 25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province, China. (Feb. 03, 2026) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization for FCC ID: 2BUK8-JLCH2001 I, the undersigned, hereby authorize (Shenzhen BKC Testing Co., Ltd.) to act on our behalf in all matters relating to this application for equipment certification. Any act carried out by (Shenzhen BKC Testing Co., Ltd.) shall have the same effect as our own and I acknowledge that all responsibility for complying with the terms and conditions of certification, as specified by DERYCOM CERTIFICATION SERVICES, INC., still resides with (Dongguanshijulvtemaoyi Co., Ltd.). We certify that we are not subject to a denial of federal benefits that includes FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. §862, and that no party to the application, as defined in 47 CFR §1.2002(b), is subject to a denial of federal benefits that includes FCC benefits pursuant to that section. Sincerely, (Signature) (Full name of contact person listed on FCC’s website) (Title):Sales Manager Tel:13711935581 Fax:N/A Email: [email protected]

Dongguanshijulvtemaoyi Co., Ltd. Address:Room 106, No. 25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province, China. 1|Page Attestation Statements To: Federal Communications CommissionDate: Feb. 3, 26 7435 Oakland Mills Road, Columbia, MD 21046, USA Subject: Attestation of Compliance with FCC Covered List Software Requirements FCC ID:[2BUK8-JLCH2001] Product Name: [Electronic piano] This letter serves as an attestation that the equipment identified above☐is /☒is not(select one) "covered" software as defined under the Federal Communications Commission (FCC) Covered List requirements, as outlined inFCC 22-84andKDB 986446. Specifically, the undersigned certifies that the equipment for which authorization is sought: 1.Does not containcybersecurity or anti-virus software produced or provided byKaspersky Lab, Inc.or any of its successors, assignees, parents, subsidiaries, affiliates, or any entity that has rebranded or relabeled software produced by the aforementioned entities. 2.Does not have the capabilityto store, run, or deliver any software identified on the FCC Covered List, including but not limited to cybersecurity and anti-virus software. To support this attestation, the appendix evaluation documentation has been prepared and is included in the certification filing. This attestation is based on a thorough evaluation of the device's design, functionality, and software environment. The undersigned affirms that the information provided is accurate and complete to the best of their knowledge. Sincerely yours, Applicant Signature Printed Name:Zuo Baoyu Title: Sales Manager Address:Room 106, No. 25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province, China. Tel.:13711935581 Email:[email protected] Dongguanshijulvtemaoyi Co., Ltd. Address:Room 106, No. 25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province, China. 2|Page Evaluation regarding to the Covered List Software: Compliance Methodology Evaluation ProcessResults Device is Inherent compliance ☒ The Chipset(s)used is limited to run the Cybersecurity or anti-virus software. Compliance ☒ The Memoryused is limited to run the Cybersecurity or anti-virus software. Compliance ☒ There isstorage capacitylimitation for store or install the Cybersecurity or anti-virus software. Compliance ☒ Operating systemused is limited to run, install or deliver the Cybersecurity or anti-virus software. Compliance Device is not Inherent compliance ☐ Evaluation Based onSoftware Bill of Materials (SBoM) See attached “SBoM“ Note:The SBoM content is limited to the scope of covered list software (e.g. antivirus and cybersecurity software). ☐ Evaluation Based onScan for Software on the device ☐ Evaluation Based onFilesystem scan ☐ Evaluation Based onRunning software check

Dongguanshijulvtemaoyi Co., Ltd. Room 106, No. 25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province, China Attestation Statements Not Covered Entity Applicant & Not Covered Equipment To: Federal Communications CommissionDate: Feb. 3, 26 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(i) & (ii) FCC ID: 2BUK8-JLCH2001 Dongguanshijulvtemaoyi Co., Ltd. (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List, established pursuant to§1.50002of reference chapter, as an entity producing “covered” communication equipment. The equipment for which authorization is sought is not “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List that prohibited from receiving an equipment authorization pursuant to section§ 2.903 of the FCC rules. Sincerely yours, Applicant Signature Printed Name:Zuo Baoyu Title: Sales Manager Address:Room 106, No. 25, Changfu Road, Changshantou, Qingxi Town, Dongguan City, Guangdong Province, China. Tel.:13711935581 Email:[email protected]