2A595YH-62893-key RGB Color Changing Controller

The music mode 3-key RGB Color Changing Controller Model: YH-6289 FCC Caution. 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. *RF warning for Portable device: The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. IC Statement: The device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canadas licence-exempt RSS(s). Operation is subject to the following two conditions: (1) This device may not cause interference. (2) This device must accept any interference, including interference that may cause undesired operation of the device. Lémetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR dInnovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. Lexploitation est autorisée aux deux conditions suivantes : 1.Lappareil ne doit pas produire de brouillage; 2.Lappareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible den compromettre le fonctionnement. RF exposure statement: The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. Déclaration d'exposition RF: L'appareil a été évalué pour répondre aux exigences générales d'exposition aux RF. L'appareil peut être utilisé dans des conditions d'exposition portable sans restriction.

The music mode 2026 24 3-key RGB Color Changing Controller Model: YH-6285 FCC Caution. 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. *RF warning for Portable device: The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. IC Statement: The device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canadas licence-exempt RSS(s). Operation is subject to the following two conditions: (1) This device may not cause interference. (2) This device must accept any interference, including interference that may cause undesired operation of the device. Lémetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR dInnovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. Lexploitation est autorisée aux deux conditions suivantes: 1.Lappareil ne doit pas produire de brouillage; 2.Lappareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible den compromettre le fonctionnement. RF exposure statement: The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. Déclaration d'exposition RF: L'appareil a été évalué pour répondre aux exigences générales d'exposition aux RF. L'appareil peut être utilisé dans des conditions d' exposition portable sans restriction.

LabelandLabelLocation

FCCID:2A595YH-6289 1/3 YH-6289Input:DC12V/2AConductedEmissions YH-6289Input:DC12V/2ARadiatedSpuriousEmissions TestFrequencyFrom30MHz-1GHz FCCID:2A595YH-6289 2/3 YH-6289Input:DC12V/2ATestfrequencyfromAbove1GHz YH-6285Input:DC5V/2AConductedEmissions FCCID:2A595YH-6289 3/3 YH-6285Input:DC5V/2ARadiatedSpuriousEmissions TestFrequencyFrom30MHz-1GHz YH-6285Input:DC5V/2ATestfrequencyfromAbove1GHz

Antenna describe 1. Antenna describe: Antenna plate PCB ANTENNA Make name/model name PDT-002 Antenna gain 0dBi Frequency range 2.4GHZ-2.483GHZ Connector type direct Location of mearement(company name) DONGGUANG XIAOKE INDUSTRLES.CO.,LTD 2.External view drawing: Picture of antenna Antenna Dimensions L1 2.15 mm L2 1.20 mm L3 1.95 mm W1 0.35 mm W2 0.35 mm D1 1.25 mm D2 1.65 mm D3 0.50 mm 3.Antenna Radiation Pattern Radiation [email protected] Total Average Gain: - 0.475 dbi 0 45 90 135 180 235 270 315 Phi Gain - 0.2 - 0.3 - 0.8 - 0.5 - 0.2 - 0.5 - 0.8 - 0.5 Radiation [email protected] Total Average Gain: - 0.275 dbi 0 45 90 135 180 235 270 315 Phi Gain 0 - 0.2 - 0.4 - 0.6 - 0.1 - 0.3 - 0.6 - 0.4 Radiation [email protected] Total Average Gain: - 0.237 dbi 0 45 90 135 180 235 2 70 315 Phi Gain 0 - 0.2 - 0.3 - 0.5 0 - 0.3 - 0.6 - 0.2

Page1of77 FCCTESTREPORT FCCID:2A595YH-6289 Product: 3-keyRGBColorChangingController ModelName: YH-6289,YH-6285 Brand:N/A ReportNo.:PTC26041802912E-FC01 Preparedfor DongguanYihongHardwareelectronicsCo.,LTD Room901,No.2,ShanghengRoad,Chang'anTown,DongguanCity,GuangdongProvince, 523880China Preparedby PreciseTesting&CertificationCo.,Ltd Building1,No.6,TongxinRoad,DongchengStreet,Dongguan,Guangdong,China ReportNo.:PTC26041802912E-FC01 Page2of77 1TESTRESULTCERTIFICATION Applicant’sname: DongguanYihongHardwareelectronicsCo.,LTD Address: Room901,No.2,ShanghengRoad,Chang'anTown,DongguanCity, GuangdongProvince,523880China Manufacture'sname: DongguanYihongHardwareelectronicsCo.,LTD Address: Room901,No.2,ShanghengRoad,Chang'anTown,DongguanCity, GuangdongProvince,523880China Productname: 3-keyRGBColorChangingController Modelname:YH-6289,YH-6285 Standards:FCCCFR47Part15Section15.247 Testprocedure:ANSI C63.10-2020+COR.1-2023 TestDate:May04,2026toMay30,2026 DateofIssue:May30,2026 TestResult:Pass ThisdevicedescribedabovehasbeentestedbyPTC,andthetestresultsshowthatthe equipmentundertest(EUT)isincompliancewiththeFCCrequirements.Anditisapplicableonlyto thetestedsampleidentifiedinthereport. Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofPTC,thisdocument maybealteredorrevisedbyPTC,personalonly,andshallbenotedintherevisionofthedocument. TestEngineer: Jackzhou/Engineer TechnicalManager: SimonPu/Manager ReportNo.:PTC26041802912E-FC01 Page3of77 Contents Page 1TESTRESULTCERTIFICATION...............................................................................................................................2 2TESTSUMMARY..........................................................................................................................................................5 2.1TESTSITE............................................................................................................................................................6 3GENERALINFORMATION.......................................................................................................................................7 3.1GENERALDESCRIPTIONOFE.U.T.....................................................................................................................7 3.2CHANNELLIST.....................................................................................................................................................8 4EQUIPMENTDURINGTEST....................................................................................................................................9 4.1EQUIPMENTSLIST.............................................................................................................................................9 4.2MEASUREMENTUNCERTAINTY.........................................................................................................................12 4.3DESCRIPTIONOFSUPPORTUNITS...................................................................................................................13 5CONDUCTEDEMISSION..........................................................................................................................................14 5.1E.U.T.OPERATION............................................................................................................................................14 5.2EUTSETUP.......................................................................................................................................................14 5.3TESTSET-UP(BLOCKDIAGRAMOFCONFIGURATION).................................................................................15 5.4MEASUREMENTPROCEDURE............................................................................................................................15 5.5CONDUCTEDEMISSIONLIMIT...........................................................................................................................15 5.6MEASUREMENTRECEIVERPARAMETERS:.......................................................................................................16 5.7CONDUCTEDEMISSIONTESTRESULT.............................................................................................................16 6RADIATEDSPURIOUSEMISSIONS......................................................................................................................21 6.1EUTOPERATION...............................................................................................................................................21 6.2TESTSETUP......................................................................................................................................................22 6.3SPECTRUMANALYZERSETUP..........................................................................................................................23 6.4TESTPROCEDURE.............................................................................................................................................24 6.5SUMMARYOFTESTRESULTS...........................................................................................................................26 7CONDUCTBANDEDGEANDSPURIOUSEMISSIONSMEASUREMENT....................................................39 7.1TESTPROCEDURE.............................................................................................................................................39 7.3TESTRESULT....................................................................................................................................................41 86DBBANDWIDTHMEASUREMENT......................................................................................................................47 ReportNo.:PTC26041802912E-FC01 Page4of77 TESTPROCEDURE...................................................................................................................................................47 TESTSETUP............................................…

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Page1of3 RFEXPOSUREEVALUATION FCCID:2A595YH-6289 ProductName:3-keyRGBColorChangingController Modelname:YH-6289 AdditionalModel:YH-6285 Modelsdifference: Thecircuitdiagram,PCBlayout,andoveralldesignareidentical;onlytheinput parametersandportsdiffer.TheYH-62891usesa5.5*2.1mminputport.The YH-6285usesaUSBinputport. Specification:BLE Operatingfrequency:2402-2480MHz Modulation:GFSK NumberofChannel:40channels Antennainstallation:PCBAntenna AntennaGain:0dBi Powersupply: YH-6289Input:DC12V/2A; YH-6285Input:DC5V/2A HardwareVersion:YH-06182-2.0 SoftwareVersion:YH-06285-5.0 Datarate:1Mbps,2Mbps Page2of3 StandardRequirement Accordingto§15.247(i)and§1.1307b(1),systemsoperatingundertheprovisionsofthis sectionshallbeoperatedinamannerthatensuresthatthepublicisnotexposedtoradio frequencyenergylevelsinexcessoftheCommission’sguidelines.SeeKDB447498D01 GeneralRFExposureGuidancev06,section4.3.1. The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparation distances≤50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]*[√f(GHz)]≤3.0for1-gSARand≤7.5for10-gSARextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison. Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤ 50mmandfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmisappliedtodetermineSARtestexclusion. RoutineSARevaluationreferstothatspecificallyrequiredby§2.1093,usingmeasurements orcomputersimulation.WhenroutineSARevaluationisnotrequired,portabletransmitters withoutputpowergreaterthantheapplicablelowthresholdrequireSARevaluationtoquality forTCBapproval. Page3of3 Channel (MHz) Maximum output power (dBm) Tuneup tolerance (dBm) MaxTune UpPower (mW) Distance (mm) Calculation results Limit Operating Mode 2480 -4.12-4.12±1 0.48752850.1535523BLE AccordingtoKDB447498D01GeneralRFExposureGuidancev06,nostand-alonerequired antenna,andnosimultaneousSARmeasurementisrequired. Signature SimonPu EMCManager Date:2026-05-30

YH-6289 YH-6289 YH-6289 YH-6289

YH-6285 YH-6285 YH-6285 YH-6285

DongguanYihongHardwareelectronicsCo.,LTD CoveredEquipmentCertificationAttestationLetter 6/29/2026 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA ATTN.:ReviewingEngineer FCCID:2A595YH-6289 DongguanYihongHardwareelectronicsCo.,LTD(“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtisnot“covered”equipmentprohibitedfrom receivinganequipmentauthorizationpursuanttosection2.903oftheFCCrules. Note:Iftheequipmentforwhichtheapplicantseeksauthorizationisproducedby anyoftheentitiesidentifiedonthecurrentCoveredList,theapplicantshould includeanexplanationonwhytheequipmentisnot“covered”equipment. DongguanYihongHardwareelectronicsCo.,LTD(“theapplicant”)certifiesthat,as ofthedateofthefilingoftheapplication,theapplicantisnotidentifiedontheCovered List(asaspecificallynamedentityoranyofitssubsidiariesoraffiliates)asanentity producing“covered”equipment. DongguanYihongHardwareelectronicsCo.,LTD(“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtdoesnotincludecybersecurityoranti-virus softwareproducedorprovidedbyKasperskyLab,Inc.oranyofitssuccessorsand assignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyofits successorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886 andKDB986446D01CoveredEquipmentGuidancesectionB(2a). Signed: PrintedName:WenFengZeng Company:DongguanYihongHardwareelectronicsCo.,LTD Date:6/29/2026

LabelandLabelLocation

YH-6285 YH-6285 YH-6285 YH-6285 YH-6285 YH-6285 YH-6285

YH-6289 YH-6289 YH-6289 YH-6289 YH-6289 YH-6289 YH-6289

DongguanYihongHardwareElectronicsCo.,Ltd ProductSimilarityDeclaration Productname:3-keyRGBColorChangingController Modelname:YH-6289,YH-6285 IC:31917-YH6289 FCCID:2A595YH-6289 We(DongguanYihongHardwareElectronicsCo.,Ltd)herebythe circuitdiagram,PCBlayout,andoveralldesignareidentical,only theinputparametersandportsdiffer.TheYH-6289Input:DC 12V/2A,theYH-6285Input:DC5V/2A;TheYH-62891usesa 5.5*2.1mminputport.TheYH-6285usesaUSBinputport. Thedifferencesareasfollows: 1.YH-6285 2.YH-6289 Signature: Printedname:WenFengZeng Title:Manager CompanyName:DongguanYihongHardwareelectronicsCo.,LTD Date:July3,2026

DongguanYihongHardwareelectronicsCo.,LTD RequestforLong-TermConfidentialityLetter-FCC Date:2026-06-29 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,Maryland21046 Re:RequestforLong-Termconfidentiality FCCID:2A595YH-6289 Towhomitmayconcern, Weherebyrespectfullyrequestthatundertheprovisionof47CFR0.459and0.457(d)the documentslistedbelowandattachedwiththisapplicationforcertificationbeprovidedwithLong- Termconfidentialstatus.  Schematics  BlockDiagrams TheoryofOperation Anyexhibit/informationforwhichwehaverequestedconfidentiality,butwhichmaynotbe accordedsuchtreatmentbytheFCC,shouldbereturnedtous. Thedocumentslistedabovecontaintradesecretsthataretreatedasconfidentialbyus. Substantialcompetitiveharmtouscouldresultshouldtheybemadeavailabletothepublic. Sincerelyyours, Signature PrintedName:WenFengZeng Company:DongguanYihongHardwareelectronicsCo.,LTD Email:[email protected] Telephone:076988499843

DongguanYihongHardwareelectronicsCo.,LTD Date:2026-06-29 FederalCommunicationsCommission Authorization&EvaluationDivision 7345OaklandMillsRoad Columbia,Maryland21046 RE:LETTEROFAGENTAUTHORIZATION FCCID:2A595YH-6289 ToWhomItMayConcern: We,theundersigned,herebyauthorizeComplianceTesting,LLCtoactonourbehalfinallmatters relatingtoapplicationforequipmentauthorization,includingthesigningofalldocumentsrelatingto thesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothedenialof benefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseActof1988,21 U.S.C.853(a). Signature PrintedName:WenFengZeng Company:DongguanYihongHardwareelectronicsCo.,LTD Email:[email protected] Telephone:076988499843