2BF2Q-KW03-1White noise speaker

1/1 USA MEIHUA TRADING INC LETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA MEIHUA TRADING INC for Service of Process: Company Name: USA MEIHUA TRADING INC FRN: 0033406166 Contact Name: Harley Quinn Address: 5379 Pine Valley Ct Boulder CO 80301 United States Telephone No: 1-312-363-9424 Email:[email protected] Applicant: Company name:Shenzhen Kaiwu Muchuang Technology Co., Ltd Product Description:White noise speaker Grantee code:2BF2Q FCC ID:2BF2Q-KW03-1 FRN:0035326065 Contact Name:Yuyuan Zhang Email:[email protected] Address:301,No.52,Xinyuan Industrial Zone,Guxing Community Xixiang Street,Bao'an District, Shenzhen [ Shenzhen Kaiwu Muchuang Technology Co., Ltd ] certifies that,as of the date of this filing of the application with the TCB, [USA MEIHUA TRADING INC] is our designated US agent for service of process for the above referenced FCC ID. [Shenzhen Kaiwu Muchuang Technology Co., Ltd ]accepts to maintain an agent for no less th an one year after thegrantee has terminated all marketing and importation or the conclusi on of any commissionrelated proceeding involving equipment. [USA MEIHUA TRADING INC] accepts, as of the dateof the filing of the application, the obligation of the designated US age nt for service of processfor the above reference FCC ID. The USA MEIHUA TRADING INC for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. This Agreement is valid for permanment. Date:2024/8 /6 Applicant’s Name:YuyuanZhang Title:General manager Signature US A gent’s Name :Ha rley Quinn Title: Ma na ger Signature

Covered Equipment Identification Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(ii) of the Commission’s Rules (47 C.F.R.) we attest as follows: We, applicant Company Name: Shenzhen Kaiwu Muchuang Technology Co., Ltd Address: 301, No.52, Xinyuan Industrial Zone, Guxing Community Xixiang Street, Bao'an District, Shenzhen, China Phone: +86-13168013432 certify that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2024-08-01 Signature Date Printed Name of Signee / Title: Yuyuan Zhang / General Manager Company: Shenzhen Kaiwu Muchuang Technology Co., Ltd Address: 301, No.52, Xinyuan Industrial Zone, Guxing Community Xixiang Street, Bao'an District, Shenzhen, China Phone: +86-13168013432 Fax: N/A Email: [email protected]

Covered Equipment Attestation Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(i)-(ii) of the Commission’s Rules (47 C.F.R.) we attest as follows for the product listed below: FCC ID Model name 2BF2Q-KW03 KW03-1 We, applicant Company Name: Shenzhen Kaiwu Muchuang Technology Co., Ltd Address: 301, No.52, Xinyuan Industrial Zone, Guxing Community Xixiang Street, Bao'an District, Shenzhen, China Phone: +86-13168013432 certify that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2024-08-06 Signature Date Printed Name of Signee / Title: Yuyuan Zhang / General Manager Company: Shenzhen Kaiwu Muchuang Technology Co., Ltd Address: 301, No.52, Xinyuan Industrial Zone, Guxing Community Xixiang Street, Bao'an District, Shenzhen, China Phone: +86-13168013432 Fax: N/A Email: [email protected]

Confidentiality Request Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we request confidentiality for the documentation of the following products: FCC ID Model name 2BF2Q-KW03-1 KW03 For the products listed above, we request permanent confidentiality for all applicable exhibits as there are: • the Operational Description • the Block Diagram • the Schematics • the Parts Lists • the Tune Up Information The above listed exhibits contain trade secrets and proprietary information that could be of benefit to our competitors. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2024-08-06 Signature Date Printed Name of Signee / Title: Yuyuan Zhang / General Manager Company: Shenzhen Kaiwu Muchuang Technology Co., Ltd Address: 301, No.52, Xinyuan Industrial Zone, Guxing Community Xixiang Street, Bao'an District, Shenzhen, China Phone: +86-13168013432 Fax: N/A Email: [email protected]

FCCID:2BF2Q-KW03-1 FCCID:2BF2Q-KW03-1 FCCID:2BF2Q-KW03-1 FCCID:2BF2Q-KW03-1

FCCID:2BF2Q-KW03-1 Label Size:40mm*20mm FCCID:2BF2Q-KW03-1 LabelLocation

FCCID:2BF2Q-KW03-1 FCCID:2BF2Q-KW03-1 FCCID:2BF2Q-KW03-1 FCCID:2BF2Q-KW03-1 FCCID:2BF2Q-KW03-1 ANT

RFExposureevaluation FCCID2BF2Q-KW03-1 ProductNameWhitenoisespeaker ModelNo.KW03 ListedModel(s)-- ExposurecategoryGeneralpopulation/uncontrolledenvironment EUTTypeProductionUnit DeviceTypePortableDevice 1.Reference ANSIC95.1–1999:IEEEStandardforSafetyLevelswithRespecttoHumanExposureto RadioFrequencyElectromagneticFields,3kHzto300GHz. FCCKDBpublication447498D01GeneralRFExposureGuidancev06:MobileandPortable DevicesRFExposureProceduresandEquipmentAuthorizationPolicies. FCCCFR47parBMK24041.1310:Radiofrequencyradiationexposurelimits. FCCCFR47part22.1093:Radiofrequencyradiationexposureevaluation:portabledevices 2.Requirement AccordingtoKDB447498D01GeneralRFExposureGuidancev06Section4.3.1Standalone SARtestexclusionconsiderations:“UnlessspecificallyrequiredbythepublishedRFexposure KDBprocedures,standalone1-gheadorbodyand10-gextremitySARevaluationforgeneral populationexposureconditions,bymeasurementornumericalsimulation,isnotrequired whenthecorrespondingSARTestExclusionThresholdcondition,listedbelow,issatisfied. Thesetestexclusionconditionsarebasedonsource-basedtime-averagedmaximum conductedoutputpoweroftheRFchannelrequiringevaluation,adjustedfortune-uptolerance, andtheminimumtestseparationdistancerequiredfortheexposureconditions.22The minimumtestseparationdistanceisdeterminedbythesmallestdistancefromtheantenna andradiatingstructuresoroutersurfaceofthedevice,accordingtothehostformfactor, exposureconditionsandplatformrequirements,toanypartofthebodyorextremityofauser orbystander(see5)ofsection4.1).ToqualifyforSARtestexclusion,thetestseparation distancesappliedmustbefullyexplainedandjustifiedbytheoperatingconfigurationsand exposureconditionsofthetransmitterandapplicablehostplatformrequirements,typicallyin theSARmeasurementorSARanalysisreport,accordingtotherequiredpublishedRF exposureKDBprocedures.WhennootherRFexposuretestingorreportingisrequired,a statementofjustificationandcompliancemustbeincludedintheequipmentapproval,inlieuof theSARreport,toqualifyfortheSARtestexclusion.Whenrequired,thedevicespecific conditionsdescribedintheotherpublishedRFexposureKDBproceduresmustbesatisfied beforeapplyingtheseSARtestexclusionprovisions;forexample,handheldPTTtwo-way radios,handsets,laptops&tabletsetc.23” [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f(GHz)]≤3.0for1-gSARand≤7.5for10-gextremitySAR,where: •f(GHz)istheRFchanneltransmitfrequencyinGHz •PoweranddistanceareroundedtothenearestmWandmmbeforecalculation •Theresultisroundedtoonedecimalplaceforcomparison •3.0and7.5arereferredtoasthenumericthresholdsinthestep2below Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mm andfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmaccordingto5)insection4.1isappliedto determineSARtestexclusion. Whenoneofthefollowingtestexclusionconditionsissatisfiedforallcombinationsof simultaneoustransmissionconfigurations,furtherequipmentapprovalisnotrequiredto incorporatetransmittermodulesinhostdevicesthatoperateinthemixedmobileandportable hostplatformexposureconditions.Thegranteeisresponsiblefordocumentingthisaccording toClassIpermissivechangerequirements.AntennasthatqualifyforstandaloneSARtest exclusionmustapplytheestimatedstandaloneSARtodeterminesimultaneoustransmission testexclusion. a)The[∑of(thehighestmeasuredorestimatedSARforeachstandaloneantenna configuration,adjustedformaximumtune-uptolerance)/1.6W/kg]+[∑ofMPEratios]is≤ 1.0. b)TheSARtopeaklocationseparationratiosofallsimultaneouslytransmittingantennapairs operatinginportabledeviceexposureconditionsareall≤0.04,andthe[∑ofMPEratios]is≤ 1.0. 3.ConductedPeakOutputPower ModulationPacketTypeChannel PeakOutput Power (dBm) PeakOutput Power (mW) GFSKDH5 0-1.090.78 39-1.010.79 78-0.070.98 π/4DQPSK2-DH5 0-0.200.96 39-0.190.96 780.771.20 8DPSK3-DH5 00.161.04 390.181.04 781.191.32 ModulationChannel PeakOutputPower (dBm) PeakOutputPower (mW) BLE1M 0-0.990.8 19-1.130.77 39-0.130.97 BLE2M 0-1.150.77 19-0.970.8 39-0.120.97 4.ManufacturingTolerance DH5 ChannelChannel0Channel39Channel78 Target(dBm)-1-10 Tolerance±(dB)1.01.01.0 2DH5 ChannelChannel0Channel39Channel78 Target(dBm)000 Tolerance±(dB)1.01.01.0 3DH5 ChannelChannel0Channel39Channel78 Target(dBm)001 Tolerance±(dB)1.01.01.0 BLE1M ChannelChannel0Channel19Channel39 Target(dBm)0-10 Tolerance±(dB)1.01.01.0 BLE2M ChannelChannel0Channel19Channel39 Target(dBm)-100 Tolerance±(dB)1.01.01.0 5.EvaluationResult Band/Modef(GHz) Antenna Distance (mm) RFoutputpower SARTest Exclusion Threshold SARTest Exclusion dBmmW EDR2.48052 1.58 0.4992<3.0Yes BLE2.48051 1.26 0.3965<3.0Yes Remark: 1.Outputpowerincludingtuneuptolerance; 2.Whentheminimumtestseparationdistanceis<5mm,adistanceof5mmaccordingtof)in section4.1isappliedtodetermineSARtestexclusion. 6.Conclusion ThemeasurementresultscomplywiththeFCCLimitper47CFR2.1093fortheuncontrolled RFExposureandSARExclusionThresholdperKDB447498v06. ------Endofthereport------

Inverted F Antenna Specification Summary ITEM ANT SPEC Model Name 2.4G ANT Horizontal Vertical 2400MHz 2400MHz2500MHz2400MHz2400MHz 2500MHz Center Frequency -1.26 -0.76 -0.58 -5.25 -2.46 -1.86 MAX. Gain -0.58dBi Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance 50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) Address No. 333 Kexing Road, Xiangzhou District, Zhuhai, China Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain(dBi) Frequency (MHz) Max Min Avg 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(dBi) Frequency (MHz) Max Min Avg 2400 -5.2537 -22.1424 -12.4294 2450 -2.4652 -24.5837 -10.4702 2500 -1.86120 -29.5214 -9.20432 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

ReportNo.:CISRR24071808902 —1— AppendixB ReportNo.: CISRR24071808902 FCCID: 2BF2Q-KW03-1 ProductName: Whitenoisespeaker ModelNo.:KW03 TestEngineer:LucasHuang Supervisedby:RoryHuang ReportNo.:CISRR24071808902 —2— 1)DutyCycle TestResult ModeChannelOnTime(ms)Period(ms)DutyCycle(%) DutyCycle (linear) DutyCycle Factor(dB) 1/T BLE1M 02.1272.49985.140.85140.6987 0.47 192.1272.49985.140.85140.69870.47 392.1272.49985.140.85140.69870.47 BLE2M 01.0752.49943.040.43043.66130.93 191.0752.49943.040.43043.66130.93 391.0752.50043.020.43023.6633 0.93 TestGraphs BLE1M_Channel0 ReportNo.:CISRR24071808902 —3— BLE1M_Channel19 BLE1M_Channel39 ReportNo.:CISRR24071808902 —4— BLE2M_Channel0 BLE2M_Channel19 ReportNo.:CISRR24071808902 —5— BLE2M_Channel39 ReportNo.:CISRR24071808902 —6— 2)PowerSpectralDensity TestResult ModeChannelPSD(dBm/3kHz)Limit(dBm/3kHz)Result BLE1M0-17.290≤8PASS BLE1M19-17.064≤8PASS BLE1M39-16.293≤8PASS BLE2M0-21.293≤8PASS BLE2M19-20.152≤8PASS BLE2M39-18.434≤8PASS TestGraphs BLE1M_Channel0BLE2M_Channel0 BLE1M_Channel19BLE2M_Channel19 ReportNo.:CISRR24071808902 —7— BLE1M_Channel39BLE2M_Channel39 ReportNo.:CISRR24071808902 —8— 3)ConductedOutputPower TestResult ModeChannel PeakOutputPower (dBm) PeakOutputPower (mW) Limit (dBm) Result BLE1M 0-0.990.80≤30PASS 19-1.130.77≤30PASS 39-0.130.97≤30PASS BLE2M 0-1.150.77≤30PASS 19-0.970.80≤30PASS 39-0.120.97≤30PASS TestGraphs PeakOutputPower BLE1M_Channel0 PeakOutputPower BLE1M_Channel19 PeakOutputPower BLE1M_Channel39 PeakOutputPower BLE2M_Channel0 ReportNo.:CISRR24071808902 —9— PeakOutputPower BLE2M_Channel19 PeakOutputPower BLE2M_Channel39 ReportNo.:CISRR24071808902 —10— 4)99%Bandwidth TestResult ModeChannelCenterFrequency(MHz)99%BW(MHz) BLE1M024021.1170 BLE1M1924401.1310 BLE1M3924801.1730 BLE2M024022.0740 BLE2M1924402.0850 BLE2M3924802.0880 TestGraphs BLE1M_Channel0BLE2M_Channel0 BLE1M_Channel19BLE2M_Channel19 ReportNo.:CISRR24071808902 —11— BLE1M_Channel39BLE2M_Channel39 ReportNo.:CISRR24071808902 —12— 5)6dBBandwidth TestResult ModeChannel CenterFrequency (MHz) 6dBBandwidth (MHz) Limit (MHz) Result BLE1M 024020.7100 ≥0.5 PASS 1924400.7400PASS 3924800.7200PASS BLE2M 024021.230PASS 1924401.230PASS 3924801.150PASS TestGraphs BLE1M_Channel0BLE2M_Channel0 BLE1M_Channel19BLE2M_Channel19 ReportNo.:CISRR24071808902 —13— BLE1M_Channel39BLE2M_Channel39 ReportNo.:CISRR24071808902 —14— 6)ConductedOutOfBandEmission TestResult ModeChannel OOBEmission Frequency (MHz) OOBEmission Level (dBm) Limit (dBm) OverLimit (dB) Result BLE1M 0 2395.59-48.501-21.25-27.251PASS 2400.00-50.257-21.25-29.007PASS 4803.80-45.100-21.25-23.850PASS 199760.39-43.719-21.4-22.319PASS 39 2483.50-49.849-20.43-29.419PASS 9920.20-43.748-20.43-23.318PASS BLE2M 0 2400.00-36.472-22.2-14.272PASS 9608.08-45.533-22.2-23.333PASS 199760.39-42.733-21.81-20.923PASS 39 2483.50-50.393-19.39-31.003PASS 9920.20-41.724-19.39-22.334PASS TestGraphs In-BandReferenceLevel BLE1M_Channel0 In-BandReferenceLevel BLE2M_Channel0 OutOfBandEmissionOutOfBandEmission ReportNo.:CISRR24071808902 —15— BLE1M_Channel0BLE2M_Channel0 30.0MHz-25000.0MHz BLE1M_Channel0 30.0MHz-25000.0MHz BLE2M_Channel0 In-BandReferenceLevel BLE1M_Channel19 In-BandReferenceLevel BLE2M_Channel19 30.0MHz-25000.0MHz BLE1M_Channel19 30.0MHz-25000.0MHz BLE2M_Channel19 ReportNo.:CISRR24071808902 —16— In-BandReferenceLevel BLE1M_Channel39 In-BandReferenceLevel BLE2M_Channel39 OutOfBandEmission BLE1M_Channel39 OutOfBandEmission BLE2M_Channel39 30.0MHz-25000.0MHz BLE1M_Channel39 30.0MHz-25000.0MHz BLE2M_Channel39

ReportNo.:CISRR24071808902 Page:1of27 TESTREPORT ReportNo.:CISRR24071808902 ProjectNo.CISR240718089 FCCID2BF2Q-KW03-1 Applicant:ShenzhenKaiwuMuchuangTechnologyCo.,Ltd Address:301,No.52,XinyuanIndustrialZone,GuxingCommunity,XixiangStreet, Bao'anDistrict,Shenzhen ManufacturerShenzhenKaiwuMuchuangTechnologyCo.,Ltd Address 301,No.52,XinyuanIndustrialZone,GuxingCommunity,XixiangStreet, Bao'anDistrict,Shenzhen ProductName:Whitenoisespeaker TradeMark:-- Model/Typereference:KW03 ListedModel(s):-- Standard:Part15SubpartCSection15.247 Testdate:July19,2024~July23,2024 IssuedateJuly23,2024 Testresult:Complied Preparedby:RoryHuangApprovedby:GenryLong Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangce TestingTechnologyCo.,Ltd. ReportNo.:CISRR24071808902 Page:2of27 Contents 1.REPORTVERSION.........................................................................................................................................3 2.SUMMARYOFTESTRESULT.......................................................................................................................4 3.SUMMARY.....................................................................................................................................................5 3.1.ProductDescription....................................................................................................................................5 3.2.RadioSpecificationDescription................................................................................................................5 3.3.ModificationofEUT.....................................................................................................................................6 3.4.TestingSite...................................................................................................................................................6 3.5.FieldStrengthCalculation..........................................................................................................................6 3.6.DISTURBANCECalculation........................................................................................................................6 4.TESTCONFIGURATION.............................................................................................................................7 4.1.Testfrequencylist.......................................................................................................................................7 4.2.Testmode.....................................................................................................................................................7 4.3.Supportunitusedintestconfigurationandsystem...............................................................................7 4.4.Testsampleinformation.............................................................................................................................8 4.5.Testingenvironmentalcondition...............................................................................................................8 4.6.Statementofthemeasurementuncertainty.............................................................................................8 4.7.EquipmentUsedduringtheTest...............................................................................................................9 5.TESTCONDITIONSANDRESULTS.....................................................................................................10 5.1.AntennaRequirement...............................................................................................................................10 5.2.ACConductedEmission...........................................................................................................................11 5.3.PeakOutputPower....................................................................................................................................14 5.4.6dBBandwidth..........................................................................................................................................15 5.5.99%OccupiedBandwidth.........................................................................................................................16 5.6.Powerspectraldensity..............................................................................................................................17 5.7.ConductedBandedgeandSpuriousEmission.....................................................................................18 5.8.RadiatedBandedgeEmission.................................................................................................................19 5.9.RadiatedSpuriousEmission....................................................................................................................21 5.10.DutyCycleCorrectionFactor(DCCF)...................................................................................................26 6.TESTSETUPPHOTOS............................................................................................................................27 7.EXTERNALANDINTERNALPHOTOSOFTHEEUT........................................................................27 7.1Externalphotos...........................................................................................................................................27 7.2Internalphotos............................................................................................................................................27 ReportNo.:CISRR24071808902 Page:3of27 1.REPORTVERSION VersionNo.IssuedateDescription 00July23,2024Original ReportNo.:CISRR24071808902 Page:4of27 2.SUMMARYOFTESTRESULT Report clause TestItemStandardRequirementResult 5.1AntennaRequirement15.203/15.247(c)PASS 5.2ACConductedEmission15.207PASS 5.3PeakOutputPower15.247(b)(3)PASS 5.46dBBandwidth15.247(a)(2)PASS 5.599%OccupiedBandwidth-PASS *1 5.6Powerspectraldensity15.247(e)PASS …

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FCCID:2BF2Q-KW03-1 RadiatedEmission Below1GHz: Above1GHz: FCCID:2BF2Q-KW03-1 ACConductedEmission