2BMLU-HE-B009White Noise Machine

ShenzhenXiaoHeTechnologyCo.,Ltd. Address:Room403,BuildingCandD,YingkeliIndustrialPark,No.6,InnerRingNorthRoad,Longxin Community,BaolongStreet,LonggangDistrict,ShenzhenCity,China FileNo.:2026SNUSDA020 U.S.AgentLetterofAttestation To:FederalCommunicationsCommission 7435OaklandMillsRoad,Columbia,MD21046,USA Date:Feb.27,26 Ref: AttestationStatement–Part 2.911(d)(7)filing FCCID:2BMLU-HE-B009 [ShenzhenXiaoHeTechnologyCo.,Ltd.](“theapplicant”)certifiesthat,asofthedateofthefilingof theapplication,[TTSMARKETINC.](“theagent”)isourdesignatedU.S.agentforserviceof processfortheabovereferenceFCCID.Theapplicantacceptstomaintainanagentforserviceof processintheUnitedStatesfornolessthanoneyearaftereitherthegranteehaspermanently terminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S.,orthe conclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolvingtheequipment, whicheverislater.TheapplicantfurtheracknowledgesitisourresponsibilitytoinformtheFCC whenevertheagentinformationchanges. [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:ShenzhenXiaoHeTechnologyCo.,Ltd. FRN:0036363398 Address:Room403,BuildingCandD,Yingkeli IndustrialPark,No.6,InnerRingNorthRoad,Longxin Community,BaolongStreet,Longgang District,ShenzhenCity,China Signature: ContactPerson:Huangpeta Tel:13538214502Email:[email protected]

ShenzhenXiaoHeTechnologyCo.,Ltd. Room403,BuildingCandD,YingkeliIndustrialPark,No.6,InnerRingNorthRoad,Longxin Community,BaolongStreet,LonggangDistrict,ShenzhenCity,China AttestationStatements NotCoveredEntityApplicant&NotCoveredEquipment To:FederalCommunicationsCommissionDate:Feb.9,26 7435OaklandMillsRoad, Columbia,MD21046,USA Ref:InformationRequiredbySection2.911(d)(5)(i)&(ii) FCCID:2BMLU-HE-B009 ShenzhenXiaoHeTechnologyCo.,Ltd.(“theapplicant”)certifiesthat,asofthedateofthefilingofthe application,theapplicantisnotidentifiedontheCoveredList,establishedpursuantto§1.50002of referencechapter,asanentityproducing“covered”communicationequipment.Theequipmentfor whichauthorizationissoughtisnot“covered”telecommunicationsequipmentandvideosurveillance equipmentproducedbyentitiesidentifiedontheCommission’sCoveredListthatprohibitedfrom receivinganequipmentauthorizationpursuanttosection§2.903oftheFCCrules. Sincerelyyours, ApplicantSignature PrintedName:Huangpeta Title: Address:Room403,BuildingCandD,YingkeliIndustrialPark,No.6,InnerRingNorthRoad,Longxin Community,BaolongStreet,LonggangDistrict,ShenzhenCity,China Tel.:13538214502 Email:[email protected]

ShenzhenXiaoHeTechnologyCo.,Ltd. Address:Room403,BuildingCandD,YingkeliIndustrialPark,No.6,InnerRingNorthRoad,Longxin Community,BaolongStreet,LonggangDistrict,ShenzhenCity,China 1|Page AttestationStatements To:FederalCommunicationsCommissionDate:Feb.9,26 7435OaklandMillsRoad, Columbia,MD21046,USA Subject:AttestationofCompliancewithFCCCoveredListSoftwareRequirements FCCID:[2BMLU-HE-B009] ProductName:[WhiteNoiseMachine] Thisletterservesasanattestationthattheequipmentidentifiedabove☐is/☒isnot(selectone)"covered" softwareasdefinedundertheFederalCommunicationsCommission(FCC)CoveredListrequirements,as outlinedinFCC22-84andKDB986446. Specifically,theundersignedcertifiesthattheequipmentforwhichauthorizationissought: 1.Doesnotcontaincybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab, Inc.oranyofitssuccessors,assignees,parents,subsidiaries,affiliates,oranyentitythathasrebranded orrelabeledsoftwareproducedbytheaforementionedentities. 2.Doesnothavethecapabilitytostore,run,ordeliveranysoftwareidentifiedontheFCCCoveredList, includingbutnotlimitedtocybersecurityandanti-virussoftware. Tosupportthisattestation,theappendixevaluationdocumentationhasbeenpreparedandisincludedinthe certificationfiling. Thisattestationisbasedonathoroughevaluationofthedevice'sdesign,functionality,andsoftware environment.Theundersignedaffirmsthattheinformationprovidedisaccurateandcompletetothebestof theirknowledge. Sincerelyyours, ApplicantSignature PrintedName:Huangpeta Title: Address:Room403,BuildingCandD,YingkeliIndustrialPark,No.6,InnerRingNorthRoad,Longxin Community,BaolongStreet,LonggangDistrict,ShenzhenCity,China Tel.:13538214502 Email:[email protected] ShenzhenXiaoHeTechnologyCo.,Ltd. Address:Room403,BuildingCandD,YingkeliIndustrialPark,No.6,InnerRingNorthRoad,Longxin Community,BaolongStreet,LonggangDistrict,ShenzhenCity,China 2|Page EvaluationregardingtotheCoveredListSoftware: Compliance Methodology EvaluationProcessResults Deviceis Inherent compliance ☒ TheChipset(s)usedislimitedtorun theCybersecurityoranti-virus software. Compliance ☒ TheMemoryusedislimitedtorunthe Cybersecurityoranti-virussoftware. Compliance ☒ Thereisstoragecapacitylimitationfor storeorinstalltheCybersecurityor anti-virussoftware. Compliance ☒ Operatingsystemusedislimitedto run,installordelivertheCybersecurity oranti-virussoftware. Compliance Deviceisnot Inherent compliance ☐ EvaluationBasedonSoftware BillofMaterials(SBoM) Seeattached“SBoM“ Note:TheSBoMcontentislimited tothescopeofcoveredlist software(e.g.antivirusand cybersecuritysoftware). ☐ EvaluationBasedonScanfor Softwareonthedevice ☐ EvaluationBasedonFilesystemscan ☐ EvaluationBasedonRunning softwarecheck

ShenzhenXiaoHeTechnologyCo.,Ltd. Address:Room403,BuildingCandD,YingkeliIndustrialPark,No.6,InnerRingNorth Road,LongxinCommunity,BaolongStreet,LonggangDistrict,ShenzhenCity,China (Feb.03,2026) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorizationforFCCID:2BMLU-HE-B009 I,theundersigned,herebyauthorize(ShenzhenBKCTestingCo.,Ltd.)toactonourbehalfinallmatters relatingtothisapplicationforequipmentcertification. Anyactcarriedoutby(ShenzhenBKCTestingCo.,Ltd.)shallhavethesameeffectasourownandI acknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsofcertification,as specifiedbyDERYCOMCERTIFICATIONSERVICES,INC.,stillresideswith(ShenzhenXiaoHe TechnologyCo.,Ltd.). WecertifythatwearenotsubjecttoadenialoffederalbenefitsthatincludesFCCbenefitspursuantto Section5301oftheAnti-DrugAbuseActof1988,21U.S.C.§862,andthatnopartytotheapplication,as definedin47CFR§1.2002(b),issubjecttoadenialoffederalbenefitsthatincludesFCCbenefits pursuanttothatsection. Sincerely, (Signature) (FullnameofcontactpersonlistedonFCC’swebsite) (Title): Tel:13538214502 Fax:13538214502 Email:[email protected]

ShenzhenXiaoHeTechnologyCo.,Ltd. Address:Room403,BuildingCandD,YingkeliIndustrialPark,No.6,InnerRingNorth Road,LongxinCommunity,BaolongStreet,LonggangDistrict,ShenzhenCity,China (Feb.03,2026) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestfor:FCCID:2BMLU-HE-B009 PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestpermanent confidentialtreatmentoftheexhibitsaccompanyingthiscertificationapplicationasoutlinedbelow: BlockDiagram  Schematics OperationalDescription Theaboveexhibitscontaintradesecretsand/orproprietaryinformationthatarenotpubliclyavailableand materialsthattheApplicanthasspentconsiderableeffortsindeveloping.Publicdisclosureofthesemay beharmfultotheApplicantandgiveanunfairadvantagetocompetitorsonthemarket. PursuanttoDA04-1705,theapplicantalsorequeststemporaryconfidentialtreatmentoftheexhibits outlinedbelowforaperiodof(upto180)daysfromthedateofequipmentauthorizationandpriorto marketingintheUnitedStatestopreventtheprematurereleaseofanysensitiveinformation.Applicantis awareoftheirresponsibilitytonotifyDERYCOMintheeventinformationregardingtheproductorthe productismadeavailabletothepublicbeforetherequestedperiodhasexpired. UserManual Sincerely, (Signature) Title: Address:Room403,BuildingCandD,YingkeliIndustrialPark,No.6,InnerRingNorthRoad,Longxin Community,BaolongStreet,LonggangDistrict,ShenzhenCity,China Tel.:13538214502 Email:[email protected]

FCCID:2BMLU-HE-B009ExternalPhotos

Label: FCCID:2BMLU-HE-B009

InternalPhotos FCCID:2BMLU-HE-B009 PCBAnt

FCCID:2BMLU-HE-B009 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 2402-4.44 -4±1 -30.50125.000.15543.0 2441-3.95 -4±1 -30.50125.000.15663.0 2480-4.47-4±1-30.50125.000.15793.0 Π /4-DQ PSK 2402-3.53-3±1-20.63105.000.19563.0 2441-3.11 -3±1 -20.63105.000.19723.0 2480-3.61 -3±1 -20.63105.000.19873.0 8-DPS K 2402-2.92-3±1-20.63105.000.19563.0 2441-2.50-3±1-20.63105.000.19723.0 2480-3.03 -3±1 -20.63105.000.19873.0 BLEGFSK 2402-4.40 -4±1 -30.50125.000.15543.0 2440-3.83-4±1-30.50125.000.15663.0 2480-4.45-4±1-30.50125.000.15793.0

FCCIDBLE FCC_BLE(Part15.247)TestData ReportNo.:BKC26010420AE-1 FCCID:2BMLU-HE-B009 TableofContents 1.-6dBBandwidth............................................................................................................................................................2 2.99%OccupiedBandwidth............................................................................................................................................4 3.DutyCycle.....................................................................................................................................................................6 4.PeakOutputPower.......................................................................................................................................................8 5.PowerSpectralDensity...............................................................................................................................................10 6.Bandedge....................................................................................................................................................................12 7.SpuriousEmission.......................................................................................................................................................14 Page2of16 1.-6dBBandwidth ConditionAntennaRateFrequency(MHz)-6dBBW(kHz)limit(kHz)Result NVNTANT11Mbps2402.00501.44500Pass NVNTANT11Mbps2440.00508.53500Pass NVNTANT11Mbps2480.00522.94500Pass -6dB_Bandwidth_NVNT_ANT1_1Mbps_2402 -6dB_Bandwidth_NVNT_ANT1_1Mbps_2440 -6dB_Bandwidth_NVNT_ANT1_1Mbps_2480 Page3of16 Page4of16 2.99%OccupiedBandwidth ConditionAntennaRateFrequency(MHz)99%%BW(MHz) NVNTANT11Mbps2402.001.043 NVNTANT11Mbps2440.001.057 NVNTANT11Mbps2480.001.081 99%_Occupied_Bandwidth_NVNT_ANT1_1Mbps_2402 99%_Occupied_Bandwidth_NVNT_ANT1_1Mbps_2440 99%_Occupied_Bandwidth_NVNT_ANT1_1Mbps_2480 Page5of16 Page6of16 3.DutyCycle ConditionAntennaRateFrequency(MHz)Dutycycle(%)Duty_factor NVNTANT11Mbps2402.0016.137.92 NVNTANT11Mbps2440.0012.908.89 NVNTANT11Mbps2480.0016.137.92 Duty_Cycle_NVNT_ANT1_1Mbps_2402 Duty_Cycle_NVNT_ANT1_1Mbps_2440 Duty_Cycle_NVNT_ANT1_1Mbps_2480 Page7of16 Page8of16 4.PeakOutputPower ConditionAntennaRate Frequency (MHz) Max.Conducted Power(dBm) Max.Conducted Power(mW) Limit(mW)Result NVNTANT11Mbps2402.00-4.400.361000Pass NVNTANT11Mbps2440.00-3.830.411000Pass NVNTANT11Mbps2480.00-4.450.361000Pass Peak_Output_Power_NVNT_ANT1_1Mbps_2402 Peak_Output_Power_NVNT_ANT1_1Mbps_2440 Peak_Output_Power_NVNT_ANT1_1Mbps_2480 Page9of16 Page10of16 5.PowerSpectralDensity ConditionAntennaRateFrequency(MHz) PowerSpectral Density(dBm/3kHz) Limit(dBm/3kHz)Result NVNTANT11Mbps2402.00-24.188Pass NVNTANT11Mbps2440.00-23.978Pass NVNTANT11Mbps2480.00-24.968Pass Power_Spectral_Density_NVNT_ANT1_1Mbps_2402 Power_Spectral_Density_NVNT_ANT1_1Mbps_2440 Power_Spectral_Density_NVNT_ANT1_1Mbps_2480 Page11of16 Page12of16 6.Bandedge ConditionAntennaModulation TX_Frequency (MHz) Max. Mark_freq(MHz) Ref_level(dBm) Spurious level(dBm) limit(dBm)Result NVNTANT11Mbps2402.002399.870-4.564-56.741-24.564Pass NVNTANT11Mbps2480.002499.000-4.639-60.269-24.639Pass 1_Reference_Level_NVNT_ANT1_1Mbps_2402 2_Bandedge_NVNT_ANT1_1Mbps_2402 1_Reference_Level_NVNT_ANT1_1Mbps_2480 Page13of16 2_Bandedge_NVNT_ANT1_1Mbps_2480 Page14of16 7.SpuriousEmission ConditionAntennaModulation TX_Frequency (MHz) Ref_level(dBm) Spurious level(dBm) limit(dBm)Result NVNTANT11Mbps2402.00-4.564-26.350-24.564Pass NVNTANT11Mbps2440.00-4.135-49.053-24.135Pass NVNTANT11Mbps2480.00-4.639-52.045-24.639Pass 1_Reference_Level_NVNT_ANT1_1Mbps_2402 2_Spurious_Emission_NVNT_ANT1_1Mbps_2402 1_Reference_Level_NVNT_ANT1_1Mbps_2440 Page15of16 2_Spurious_Emission_NVNT_ANT1_1Mbps_2440 1_Reference_Level_NVNT_ANT1_1Mbps_2480 Page16of16 2_Spurious_Emission_NVNT_ANT1_1Mbps_2480

ShenzhenBKCTestingCo.,Ltd.ReportNo.:BKC26010420AE-1 TestReportTel:4000-875-3820755-84829082Web:Http://www.bkc-lab.comPage1of28 TESTREPORT Applicant:ShenzhenXiaoHeTechnologyCo.,Ltd. Address: Room403,BuildingCandD,YingkeliIndustrialPark,No.6,InnerRing NorthRoad,LongxinCommunity,BaolongStreet,Longgang District,ShenzhenCity,China Manufacturer: ShenzhenXiaoHeTechnologyCo.,Ltd. Address: Room403,BuildingCandD,YingkeliIndustrialPark,No.6,InnerRing NorthRoad,LongxinCommunity,BaolongStreet,Longgang District,ShenzhenCity,China ProductName:WhiteNoiseMachine ModelNumber:HE-B009,HE-B008 Trademark:/ FCCID:2BMLU-HE-B009 TestDate: Jan.13,2026–Feb.02,2026 DateofReport: Feb.02,2026 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.:BKC26010420AE-1 TestReportTel:4000-875-3820755-84829082Web:Http://www.bkc-lab.comPage2of28 TABLEOFCONTENT 1.GeneralInformation......................................................................................4 1.1.DescriptionofDevice(EUT).......................................................................................................................4 1.2.ChannelList..................................................................................................................................................4 1.3.Summaryoftestresult................................................................................................................................5 1.4.SpecialAccessoriesandAuxiliaryEquipment........................................................................................5 1.5.Testmode......................................................................................................................................................5 1.6.Testconfiguration.........................................................................................................................................5 1.7.BlockDiagram...............................................................................................................................................6 1.8.TestConditions.............................................................................................................................................6 1.9.MeasurementUncertainty(95%confidencelevels,k=2)......................................................................6 1.10.TestFacility..................................................................................................................................................7 1.11.TestEquipment...........................................................................................................................................7 2.Conductedemissionatthemainsterminalstest......................................9 2.1.Limit................................................................................................................................................................9 2.2.TestSetup......................................................................................................................................................9 2.3.TestProcedure..............................................................................................................................................9 2.4.TestResult...................................................................................................................................................10 3.RadiatedSpuriousEmissions...................................................................12 3.1.Limit..............................................................................................................................................................12 3.2.TestSetup....................................................................................................................................................13 3.3.TestProcedure............................................................................................................................................15 3.4.TestResult...................................................................................................................................................16 4.ConductedSpuriousEmissions................................................................21 4.1.Limit..............................................................................................................................................................21 4.2.TestSetup....................................................................................................................................................21 4.3.TestProcedure............................................................................................................................................21 4.4.TestResult...................................................................................................................................................21 5.BandEdgeMeasurement...........................................................................22 5.1.Limit..............................................................................................................................................................22 5.2.Testsetup....................................................................................................................................................22 5.3.TestProcedure............................................................................................................................................22 5.4.TestResult.........................................................................................................................................…

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Summary InvertedFAntennaSpecification ITEMANTSPEC ModelName2.4GANT Center Frequency HorizontalVertical 2400MHz2450MHz2500MHz2400MHz2450MHz2500MHz -1.26-0.76-0.58-5.25-2.46-1.86 MAX.Gain-0.58db PolarizationHorizontalandVertical AzimuthBeam Pattern Omni-directional Impedance50Ohm AntennaLength38.20mm Manufacture ZHUHAIJIELITECHNOLOGYCo.,LTD AntennaPhoto&Length(mm) Horizontal:2400MHz2450MHz2500MHz Power(dBm) Max:0Min:-40Scale:5/div Frequency (MHz) Gain(dBi) MaxMinAvg 2400-1.26174-30.0801-7.18716 2450-0.765802-36.5604-7.48023 2500-0.585582-22.0315-6.59127 Vertical:2400MHz2450MHz2500MHz Power(dBm) Max:0Min:-30Scale:5/div Frequency (MHz) Gain(dBi) MaxMinAvg 2400-0.4229-22.1424-12.4294 2450-0.3355-24.5837-10.4702 25000.07660-29.5214-9.20432 ANTTestLabs：ATTESTAIONOFGLOBALCOMPLIANCECO.,LTD

TestPhoto FCCID:2BMLU-HE-B009