2AWVR-C5White Noise Machine

FCC Requirement Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. 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. 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.

Date:04/17/2018VCB_F-01:OperatingProceduresForm–FCCAuthorizationv02Page1of1 KERCHANTECHNOLOGYCO.,LIMITED AttestationStatementLetterI FederalCommunicationsCommission AuthorizationandEvaluationDivision 1435OaklandMillsRoad Columbia,MD21046 Date:2023-2-16 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCApplicationforFCCID:2AWVR-C5 KERCHANTECHNOLOGYCO.,LIMITEDcertifiesthattheequipmentforwhich authorizationissoughtisnot “covered”equipmentprohibitedforreceivinganequipmentauthorizationpursuant tosection2.903oftheFCCrules. Sincerely Applicant’sSignature: Applicant’sname:JunhuaDan

Date:04/17/2018VCB_F-01:OperatingProceduresForm–FCCAuthorizationv02Page1of1 KERCHANTECHNOLOGYCO.,LIMITED AttestationStatementLetterII FederalCommunicationsCommission AuthorizationandEvaluationDivision 1435OaklandMillsRoad Columbia,MD21046 Date:2023-2-16 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCApplicationforFCCID:2AWVR-C5 KERCHANTECHNOLOGYCO.,LIMITEDcertifiesthat,asofthedateofthefiling oftheapplication,theapplicantisnotidentifiedontheCoveredListasanentity producing"covered”equipment. Sincerely Applicant’sSignature: Applicant’sname:JunhuaDan

Date:04/17/2018VCB_F-01:OperatingProceduresForm–FCCConfidentialityv02Page1of1 KERCHANTECHNOLOGYCO.,LIMITED FederalCommunicationsCommission AuthorizationandEvaluationDivision ConfidentialityRequestregardingapplicationforcertificationofFCCID:2AWVR-C5 PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequest confidentialtreatmentofinformationaccompanyingthisapplicationasoutlinedbelow: ExhibitTypeFileName 1.BlockDiagram, 2.Schematics, 3.OperationalDescription 1.2AWVR-C5-Blockdiagram 2.2AWVR-C5-SCH 3.2AWVR-C5-Operationaldescription Theabovematerialscontaintradesecretsandproprietaryinformationnotcustomarily releasedtothepublic.Thepublicdisclosureofthesematerialsmaybeharmfultothe applicantandprovideunjustifiedbenefitstoitscompetitors. TheapplicantunderstandsthatpursuanttoSection0.457oftheRules,disclosureofthis applicationandallaccompanyingdocumentationwillnotbemadebeforethedateofthe Grantforthisapplication. PursuanttoDA04-1705June15,2004oftheCommission’spublicnotice,wealso requesttemporaryconfidentialtreatmentofinformationaccompanyingthisapplication asoutlinedbelowforaninitialperiodofxxxx(ie-“45”,“90”or“180”)days: ExhibitTypeFileName N/AN/A Signature: Contactname:JunhuaDan Companyname:KERCHANTECHNOLOGYCO.,LIMITED Address:5/F,BulidingB,shuangjinhuiIndustrialPark,Fu'yong,BaoanShenzhenChina.

Date:04/17/2018VCB_F-01:OperatingProceduresForm–FCCAuthorizationv02Page1of1 KERCHANTECHNOLOGYCO.,LIMITED FederalCommunicationsCommission AuthorizationandEvaluationDivision 1435OaklandMillsRoad Columbia,MD21046 Date:2023-2-1 SUBJECT:FCCApplicationfor(FCCID:2AWVR-C5) ToWhomItMayConcern: We,theundersigned,herebyauthorizeYoyoZhouin ShenzhenHuaxiaTesting TechnologyCo.,Ltdat1F.,BlockAofTongshengTechnologyBuilding,HuahuiRoad, DalangStreet,LonghuaDistrict,Shenzhen,Chinaonourbehalf,toapplytotheFederal CommunicationsCommissiononourequipment.Anyandallactscarriedoutby ShenzhenHuaxiaTestingTechnologyCo.,Ltd onourbehalfshallhavethesame effectasactsofourown. ThisistoadvisethatweareinfullcompliancewiththeAnti-DrugAbuseAct.We, theapplicant,arenotsubjecttoadenialoffederalbenefitspursuanttoSection 5301oftheAnti-DrugActof1988,21USC853a,andnopartytotheapplicationis subjecttoadenialoffederalbenefitspursuanttothatsection. Sincerely, (MustbesignedbythepersonthatislistedontheFCCWebsite) Signature: Contactname:JunhuaDan Companyname:KERCHANTECHNOLOGYCO.,LIMITED Address:5/F,BulidingB,shuangjinhuiIndustrialPark,Fu'yong,BaoanShenzhenChina.

KERCHANTECHNOLOGYCO.,LIMITED ModelConfirmationLetter We,(KERCHANTECHNOLOGYCO.,LIMITED)certifytheproduct: WhiteNoiseMachine ModelNo.:C5,Ak5M Theirelectricalcircuitdesign,layout,componentsusedandinternalwiringare identical,Onlythemodelisdifferent. Signiture: GranteeContact:JunhuaDan CompanyName:KERCHANTECHNOLOGYCO.,LIMITED Date:2023-2-1

Externalphotos

C5丝印潘通色号: PANTONE Cool Gray 4C

Internalphotos

ShenzhenHuaxiaTestingTechnologyCo.,Ltd. 1F.,BlockAofTongshengTechnologyBuilding,HuahuiRoad,DalangStreet,LonghuaDistrict, Shenzhen,China Telephone:+86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com ReportTemplateVersion:V05 ReportTemplateRevisionDate:2021-11-03 TESTREPORT Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,Theresult(s)showninthisreportreferonlytothe sample(s)tested.WithoutwrittenapprovalofCQA,thisreportcan’tbereproducedexceptinfull. ReportNo.:CQASZ20221202206E Applicant:KERCHANTECHNOLOGYCO.,LIMITED AddressofApplicant:5/F,BulidingB,shuangjinhuiIndustrialPark,Fu'yong,BaoanShenzhenChina. EquipmentUnderTest(EUT): EUTName:WhiteNoiseMachine ModelNo.:C5,Ak5M TestModelNo.: C5 BrandName:BUFFBEE FCCID:2AWVR-C5 Standards:47CFRPart15,SubpartB,ClassB DateofReceipt:2022-12-23 DateofTest:2022-12-23to2022-12-30 DateofIssue: 2023-2-1 TestResult:PASS* *Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove TestedBy: (JoeWang) ReviewedBy: (TimoLei) ApprovedBy: (JackAi) ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20221202206E Page:2of24 1Version RevisionHistoryofReport ReportNo.Version Description IssueDate CQASZ20221202206ERev.01 Initialreport 2023-2-1 ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20221202206E Page:3of24 2TestSummary TestItemTestRequirementTestmethodResult RadiatedEmission47CFRPart15BANSIC63.4-2014PASS ConductedEmission (150kHzto30MHz) 47CFRPart15BANSIC63.4-2014PASS Highestfrequencygeneratedorusedinthedevice oronwhichthedeviceoperatesortunes (MHz) UpperfrequencyofmeasurementRange (MHz) Below1.70530 1.705to1081000 108to5002000 500to10005000 Above10005thharmonicofthehighestfrequencyor40GHz, whicheverislower ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20221202206E Page:4of24 3Contents Page 1VERSION...............................................................................................................................................................................2 2TESTSUMMARY.................................................................................................................................................................3 3CONTENTS...........................................................................................................................................................................4 4GENERALINFORMATION.................................................................................................................................................5 4.1CLIENTINFORMATION......................................................................................................................................................5 4.2GENERALDESCRIPTIONOFEUT......................................................................................................................................5 4.3TESTENVIRONMENTANDMODE......................................................................................................................................6 4.4DESCRIPTIONOFSUPPORTUNITS.....................................................................................................................................6 4.5TESTLOCATION................................................................................................................................................................6 4.6DEVIATIONFROMSTANDARDS.........................................................................................................................................6 4.7ABNORMALITIESFROMSTANDARDCONDITIONS.............................................................................................................6 4.8OTHERINFORMATIONREQUESTEDBYTHECUSTOMER...................................................................................................6 4.9MEASUREMENTUNCERTAINTY(95%CONFIDENCELEVELS,K=2)...................................................................................7 5EQUIPMENTLIST................................................................................................................................................................8 6TESTRESULTSANDMEASUREMENTDATA.............................................................................................................9 6.1CONDUCTEDEMISSIONS...................................................................................................................................................9 6.2RADIATEDEMISSION.......................................................................................................................................................13 APPENDIX1PHOTOGRAPHSOFTESTSETUP..........................................................................................................17 APPENDIX2PHOTOGRAPHSOFEUT...........................................................................................................................18 ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20221202206E Page:5of24 4GeneralInformation 4.1ClientInformation Applicant:KERCHANTECHNOLOGYCO.,LIMITED AddressofApplicant:5/F,BulidingB,shuangjinhuiIndustrialPark,Fu'yong,BaoanShenzhenChina. Manufacturer:KERCHANTECHNOLOGYCO.,LIMITED AddressofManufacturer:5/F,BulidingB,shuangjinhuiIndustrialPark,Fu'yong,BaoanShenzhenChina. Factory: KERCHANTECHNOLOGYCO.,LIMITED AddressofFactory: 5/F,BulidingB,shuangjinhuiIndustrialPark,Fu'yong,BaoanShenzhenChina. 4.2GeneralDescriptionofEUT ProductName: WhiteNoiseMachine ModelNo.: C5,Ak5M TestModelNo.: C5 TradeMark: BUFFBEE EUTPowerSupply:AC100V~240V50/60Hz,DC5V,1AAAAbatteryDC1.5V*3 TestMode: NormalworkingKeeptheEUTinNormalworking ChargingmodeKeeptheEUTinChargingmode Note: ModelNo.:C5,Ak5M OnlythemodelC5wastested,sincetheirelectricalcircuitdesign,layout,componentsusedandinternal wiringareidentical,Onlythemodelisdifferent. ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20221202206E Page:6of24 4.3TestEnvironmentandMode OperatingEnvironment: RadiatedEmission Temperature: 25.5  C Humidity:53%RH AtmosphericPr…

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ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20221202206E Page:21of24 ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20221202206E Page:22of24 ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20221202206E Page:23of24 ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20221202206E Page:24of24 ***ENDOFREPORT***

APPENDIX1PHOTOGRAPHSOFTESTSETUP RadiatedemissionTestSetup(30MHz ～ 1GHz) ConductedEmissionsTestSetup