2BFKZ-LK-M819-442.1CH soundbar

FCC Warning This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body.

GuangdongWanshengScience& TechnologyCo., Ltd. FederalCommunicationsCommission Authorizationand EvaluationDivision EquipmentAuthorizationBranch 7435 OaklandMills Road Columbia,MD 21046 9/6/24 U.S. AgentDesignation GuangdongWanshengScience& TechnologyCo., Ltd.acknowledgestheir consentfor the followingcontact locatedin the UnitedStatesto act as their agent for serviceof processfor the equipmentfor whichauthorization is sought(FCC ID:2BFKZ-LK-M819-44): Nameand companyof U.S. agent:UUX GROUPINC PhysicalU.S. addressof agent:36 South18th Avenue,Suite A Brighton,CO USA 80601 FRN of U.S. agent:0033701590 Email addressof U.S. agent:[email protected] UUX GROUPINCacknowledgestheir obligationto acceptserviceof processon behalfofGuangdong WanshengScience& TechnologyCo., Ltd.. GuangdongWanshengScience& TechnologyCo., Ltd.with the FRN0035184753acceptsits obligationto maintainan agent for serviceof processin the UnitedStatesfor no less than one year after either the granteehas permanentlyterminatedall marketingand importationof the applicableequipmentwithinthe U.S., or the conclusionof any Commission-relatedadministrativeor judicialproceedinginvolvingthe equipment,whicheveris later. By signingthis form, we confirmthe aboveand that we are awareof the applicationrequirementslisted under§ 2.911(d)(7). The informationprovidedin this letter is basedon the referencedrule parts of Title 47 of the CFR as well as KDB 986446D01. An expirationdate for this letter does not exist. In case the U.S. agent changes,the granteeis obligatedto notify the FCC within 30 days via the grantingTCB. Sincerely, Signature Angel Feng Manager GuangdongWanshengScience& TechnologyCo., Ltd. Signature Jack Fu Manager UUX GROUPINC 48_[model] US_Agent_2.911(d)(7)-U, V05

Page1of7FCCID: 2BFKZ-LK-M819-44 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. ExternalPhotos Photo1 Photo2 Page2of7FCCID: 2BFKZ-LK-M819-44 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo3 Photo4 Page3of7FCCID: 2BFKZ-LK-M819-44 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo5 Photo6 Page4of7FCCID: 2BFKZ-LK-M819-44 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo7 Photo8 Page5of7FCCID: 2BFKZ-LK-M819-44 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo9 Photo10 Page6of7FCCID: 2BFKZ-LK-M819-44 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo11 Photo12 Page7of7FCCID: 2BFKZ-LK-M819-44 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo13 ------End------

Label FCC ID: 2BFKZ-LK-M819-44

Page1 of 5FCC ID: 2BFKZ-LK-M819-44 DongguanYaxu (AiT) TechnologyLimited No.22,Jinqianling3rd Street,Jitigang, Huangjiang,Dongguan,Guangdong,China. InternalPhoto s Photo1 Photo2 Page2 of 5FCC ID: 2BFKZ-LK-M819-44 DongguanYaxu (AiT) TechnologyLimited No.22,Jinqianling3rd Street,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo3 Photo4 Page3 of 5FCC ID: 2BFKZ-LK-M819-44 DongguanYaxu (AiT) TechnologyLimited No.22,Jinqianling3rd Street,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo5 Photo6 BT Antenna Page4 of 5FCC ID: 2BFKZ-LK-M819-44 DongguanYaxu (AiT) TechnologyLimited No.22,Jinqianling3rd Street,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo7 Photo8 Page5 of 5FCC ID: 2BFKZ-LK-M819-44 DongguanYaxu (AiT) TechnologyLimited No.22,Jinqianling3rd Street,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo9 ------End------

RFExposureevaluation FCCID:2BFKZ-LK-M819-44 Exposurecategory:Generalpopulation/uncontrolledenvironment EUTType:ProductionUnit DeviceType:MobileDevice 1.Reference Accordingto§1.1307(b)(1),systemsoperatingundertheprovisionsofthissectionshallbe operatedinamannerthatensuresthatthepublicisnotexposedtoradiofrequencyenergy levelinexcessoftheCommission’sguidelines. Accordingto§1.1310and§2.1091RFexposureiscalculated. KDB447498D01:MobileandPortableDevicesRFExposureProceduresandEquipment AuthorizationPolicies 2.Limit LimitsforMaximumPermissibleExposure(MPE)/ControlledExposure Frequency Range(MHz) ElectricField Strength(V/m) MagneticField Strength(A/m) PowerDensity (mW/cm²) AveragingTime (minute) LimitsforOccupational/ControlledExposure 0.3–3.0 3.0–30 30–300 300–1500 1500–100,000 614 1842/f 61.4 / / 1.63 4.89/f 0.163 / / (100)* (900/f 2 )* 1.0 f/300 5 6 6 6 6 6 LimitsforMaximumPermissibleExposure(MPE)/UncontrolledExposure Frequency Range(MHz) ElectricField Strength(V/m) MagneticField Strength(A/m) PowerDensity (mW/cm²) AveragingTime (minute) LimitsforOccupational/ControlledExposure 0.3–3.0 3.0–30 30–300 300–1500 1500–100,000 614 824/f 27.5 / / 1.63 2.19/f 0.073 / / (100)* (180/f 2 )* 0.2 f/1500 1.0 30 30 30 30 30 F=frequencyinMHz *=Plane-waveequivalentpowerdensity 3.MPECalculationMethod PredicationofMPElimitatagivendistance Equationfrompage18ofOETBulletin65,Edition97-01 S=PG/4πR² Where:S=powerdensity P=powerinputtoantenna G=powergainoftheantennainthedirectionofinterestrelativetoanisotropicradiator R=distancetothecenterofradiationoftheantenna 4.AntennaInformation EUTcanonlyuseantennascertificatedasfollowsprovidedbymanufacturer; Antenna ModelNo. ofantenna: Typeofantenna:Gainoftheantenna(Max.)Frequencyrange: BT/PCBAntennaAntenna:-0.68dBiFor2.4G 5.ManufacturingTolerance BR_EDR(Conducted) Frequency (MHz) BR_EDR_GFSK 240224412480 Target(dBm)-3.0-3.0-4.0 Tolerance±(dB)1.01.01.0 Frequency (MHz) BR_EDR_π/4-DQPSK 240224412480 Target(dBm)0.0-2.0-2.0 Tolerance±(dB)1.01.01.0 Frequency (MHz) BR_EDR_8-DPSK 240224412480 Target(dBm)-1.0-1.0-1.0 Tolerance±(dB)1.01.01.0 6.StandaloneMPEResult AsdeclaredbytheApplicant,theEUTisawirelessdeviceusedinafixapplication,atleast 20cmfromanybodypartoftheuserornearbypersons;fromthemaximumEUTRFoutput power,theminimumseparationdistance,r=20cm,aswellasthegainoftheusedantennais refertosection4,theRFpowerdensitycanbeobtained. ModulationType OutputpowerAntenna Gain (dBi) Antenna Gain (linear) MPE (mW/cm 2 ) MPE Limits (mW/cm 2 ) dBmmW BR_EDR1.01.259-0.680.8550.000211.0000 Remark: 1.Outputpower(Peak)includingturn-uptolerance; 2.MPEevaluatedistanceis20cmfromusermanualprovidebymanufacturer. 7.Conclusion ThemeasurementresultscomplywiththeFCCLimitper47CFR2.1091fortheuncontrolled RFExposureofmobiledevice. ----------------THEENDOFREPORT---------------

Page1of39ReportNo.:AiTDG-240819006W1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. TESTREPORT ClientInformation: Applicant:GuangdongWanshengScience&TechnologyCo.,Ltd. Applicantadd.: 5F.,Bldg.A1,DonghuaInd.Zone,No.5003,Bao'anBlvd.,Sanwei,Hangcheng Str.,Bao'anDist.Shenzhen,Guangdong,China518126 Manufacturer:GuangdongWanshengScience&TechnologyCo.,Ltd. Manufactureradd.: 5F.,Bldg.A1,DonghuaInd.Zone,No.5003,Bao'anBlvd.,Sanwei,Hangcheng Str.,Bao'anDist.Shenzhen,Guangdong,China518126 ProductInformation: ProductName:2.1CHsoundbar ModelNo.:LK-M819-44 BrandName:VAENSONG FCCID: 2BFKZ-LK-M819-44 Applicablestandards: FCCCFRTitle47Part15SubpartCSection15.247 PreparedBy: DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang,Huangjiang,Dongguan, Guangdong,China Tel.:+86-769-82020499Fax.:+86-769-82020495 DateofReceipt:Aug.19,2024DateofTest:Aug.19,2024~Aug.27,2024 DateofIssue:Aug.28,2024TestResult:Pass ThisdevicedescribedabovehasbeentestedbyDongguanYaxu(AiT)TechnologyLimitedandthetest resultsshowthattheequipmentundertest(EUT)isincompliancewiththeFCCrequirements.Anditis applicableonlytothetestedsampleidentifiedinthereport. Note:Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofDongguan Yaxu(AiT)TechnologyLimited,thisdocumentmaybealteredorrevisedbyDongguanYaxu(AiT) TechnologyLimited,personalonly,andshallbenotedintherevisionofthedocument.Thistest reportmustnotbeusedbytheclienttoclaimproductendorsement. Reviewedby:Approvedby: EmiyaLinSimbaHuang Page2of39ReportNo.:AiTDG-240819006W1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. 1Contents Page COVERPAGE 1CONTENTS......................................................................................................................................................................2 2TESTSUMMARY............................................................................................................................................................4 2.1StatementoftheMeasurementUncertainty................................................................................4 2.2MeasurementUncertainty............................................................................................................4 3TESTFACILITY..............................................................................................................................................................5 3.1Deviationfromstandard...............................................................................................................5 3.2Abnormalitiesfromstandardconditions.......................................................................................5 3.3TestLocation.................................................................................................................................5 4GENERALINFORMATION...........................................................................................................................................6 4.1Testfrequencies............................................................................................................................7 4.2EUTPeripheralList.......................................................................................................................8 4.3TestPeripheralList.......................................................................................................................8 4.4TESTMETHODOLOGY...............................................................................................................9 4.5DescriptionofTestModes..........................................................................................................10 5EQUIPMENTUSEDDURINGTEST.........................................................................................................................11 6TESTRESULTSANDMEASUREMENTDATA.....................................................................................................13 6.1Antennarequirement..................................................................................................................13 6.2PeakPowerMeasurement.........................................................................................................14 6.3FrequencySeparationand20dBBandwidth............................................................................16 6.4NumberofHoppingFrequency..................................................................................................18 6.5TimeofOccupancy(DwellTime)...............................................................................................19 6.6ConductedSpuriousEmissionsandBandEdgesTest.............................................................21 6.7Restrict-bandBand-edgeMeasurements..................................................................................23 6.8RadiatedEmissionsMeasurement............................................................................................25 6.9ConductedEmissions.................................................................................................................35 6.10Pseudorandomfrequencyhoppingsequence...........................................................................38 7TESTSETUPPHOTOGRAPHSOFEUT.................................................................................................................39 8EXTERNALPHOTOGRAPHSOFEUT....................................................................................................................39 9INTERNALPHOTOGRAPHSOFEUT.....................................................................................................................39 Page3of39ReportNo.:AiTDG-240819006W1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. REPORTREVISERECORD Report Version ReviseTimeIssuedDateValidVersionNotes V1.0/ Aug.28,2024 ValidInitialrelease Page4of39ReportNo.:AiTD…

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Inverted F Antenna Specification Summary ITEM ANT SPEC Model Name 2.4G ANT Horizontal Vertical Center 2400MHz 2400MHz 2500MHz 2400MHz 2400MHz 2500MHz Frequency -1.73 -0.84 -0.68 -6.15 -3.70 -2.32 MAX. Gain Polarization Azimuth Beam Pattern Impedance Antenna Length Manufacture -0.68dBi Horizontal and Vertical Omni-directional 500hm 38 .20mm ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) 15mm 6.7mm 12mm Hori0ntal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: O Min: -40 Scale: 5/div Frequency ( M Hz ) M ax 2400 -1.73178 2450 -0.845801 2500 -0.685586 G ain ( dBi) Min A v g -30.0815 - 8.48713 -38.5605 -7.88012 -24.0318 -6.79139 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div 喟9 Frequency (MHz) Max 2400 -6. 1530 2450 -3.7054 2500 -2.32122 G a in ( dBi ) Min -24. 1420 -26.5836 -30.4301 ANT Test Labs: Attestation of Global Compliance Co., Ltd. A v g -13.0295 -10.6700 -9.70536

DongguanYaxu(AiT)TechnologyLimited Report No.: AiTDG-240819006W1 FCC ID : 2BFKZ-LK-M819-44 Page1 of61 AppendixA RF Test Data for BT(BDR/EDR)(ConductedMeasurement) Pr oductName:2.1CHsoundbar TradeMark:VAENSONG Test Model:LK-M819-44 EnvironmentalConditions Temperature:25.2°C RelativeHumidity:54.2 % ATM Pressure:101Kpa Test Engineer:Emiyalin Supervisedby:SimbaHaung DongguanYaxu(AiT)TechnologyLimited Report No.: AiTDG-240819006W1 FCC ID : 2BFKZ-LK-M819-44 Page2 of61 Contents Page COVERPAGE 1Duty Cycle........................................................................................................................................................................................3 1.1Test Result............................................................................................................................................................................3 1.2Test Graphs...........................................................................................................................................................................4 2MaximumConductedPeakOutputPower........................................................................................................................................9 2.1Test Result............................................................................................................................................................................9 2.2Test Graphs.........................................................................................................................................................................10 320dBBandwidth..............................................................................................................................................................................15 3.1Test Result..........................................................................................................................................................................15 3.2Test Graphs.........................................................................................................................................................................16 4CarrierFrequencySeparation.........................................................................................................................................................21 4.1Test Result..........................................................................................................................................................................21 4.2Test Graphs.........................................................................................................................................................................22 5HoppingChannelNumber...............................................................................................................................................................24 5.1Test Result..........................................................................................................................................................................24 5.2Test Graphs.........................................................................................................................................................................25 6DwellTime ......................................................................................................................................................................................27 6.1Test Result..........................................................................................................................................................................27 6.2Test Graphs.........................................................................................................................................................................28 7RF ConductedSpuriousEmissions.................................................................................................................................................31 7.1Test Result..........................................................................................................................................................................31 7.2Test Graphs.........................................................................................................................................................................32 8Band-edgefor RF ConductedEmissions........................................................................................................................................41 8.1Test Result..........................................................................................................................................................................41 8.2Test Graphs.........................................................................................................................................................................42 9Restrict-bandband-edgemeasurements........................................................................................................................................54 9.1Test Result..........................................................................................................................................................................54 9.2Test Graphs.........................................................................................................................................................................56 DongguanYaxu(AiT)TechnologyLimited Report No.: AiTDG-240819006W1 FCC ID : 2BFKZ-LK-M819-44 Page3 of61 1 Duty Cycle 1.1Test Result ModeFrequency(MHz)Duty Cycle(%)Correction Factor 1/T (kHz) 1-DH1240232.84.842.5 1-DH1244132.324.912.56 1-DH1248032.014.952.56 2-DH1240233.64.742.44 2-DH1244132.944.822.5 2-DH1248033.354.772.44 3-DH1240233.64.742.44 3-DH1244133.64.742.44 3-DH1248033.614.742.44 DongguanYaxu(AiT)TechnologyLimited Report No.: AiTDG-240819006W1 FCC ID : 2BFKZ-LK-M819-44 Page4 of61 1.2Test Gra…

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Page1of2 FCCID:2BFKZ-LK-M819-44 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. TestSetupPhoto RadiatedEmission Page2of2 FCCID:2BFKZ-LK-M819-44 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. ConductedEmission ------End------