2A4V8-K2509RGB dual system three mode mechanical keyboard

DONGGUAN FL ESPORTS ELECTRONICS CO.,LTD.

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Application Details

Equipment Class: DXX - Part 15 Low Power Communication Device Transmitter
Date of Grant: Sep 17, 2026
Application Purpose: Original Equipment
Equipment Note: RGB dual system three mode mechanical keyboard
Frequency Range: 2404.00000000 - 2480.00000000
Company: DONGGUAN FL ESPORTS ELECTRONICS CO.,LTD.
Country: China

Documents & Files

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Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Attestation Statements

DONGGUANFLESPORTSELECTRONICSCO.,LTD. CoveredEquipmentCertificationAttestationLetter 9/3/2026 NemkoNorthAmerica,Inc. 303RiverRoad Ottawa K1V1H2 Canada ATTN.:ReviewingEngineer FCCID:2A4V8-K2509 DONGGUANFLESPORTSELECTRONICSCO.,LTD.(“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtisnot“covered”equipmentprohibitedfrom receivinganequipmentauthorizationpursuanttosection2.903oftheFCCrules. Note:Iftheequipmentforwhichtheapplicantseeksauthorizationisproducedby anyoftheentitiesidentifiedonthecurrentCoveredList,theapplicantshould includeanexplanationonwhytheequipmentisnot“covered”equipment. DONGGUANFLESPORTSELECTRONICSCO.,LTD.(“theapplicant”)certifiesthat,as ofthedateofthefilingoftheapplication,theapplicantisnotidentifiedontheCovered Listasanentityproducing“covered”equipment. DONGGUANFLESPORTSELECTRONICSCO.,LTD.(“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtdoesnotincludecybersecurityoranti-virus softwareproducedorprovidedbyKasperskyLab,Inc.oranyofitssuccessorsand assignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyofits successorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886 andKDB986446D01CoveredEquipmentGuidancesectionB(2a). Signed: Printedname:LeoLi Title:Manager CompanyName:DONGGUANFLESPORTSELECTRONICSCO.,LTD. Date:9/3/2026

Cover Letter(s)

DONGGUANFLESPORTSELECTRONICSCO.,LTD. 9/8/2026 NemkoNorthAmerica,Inc. 303RiverRoad Ottawa,Ontario,Canada K1V1H2 REQUESTFORCONFIDENTIALITY-FCC FCCID:2A4V8-K2509 PursuanttoSections0.457(d)(1)(ii)and0.459oftheCommission’sRulesandFCCGuidance document726920,weherebyrequestconfidentialtreatmentofinformationaccompanyingthis applicationasoutlinedbelow: PERMANENTLONG-TERMCONFIDENTIALITY: Schematics BlockDiagrams TheoryofOperation Theaboveinformationcontainstradesecretsandproprietaryinformationnotcustomarilyreleasedto thepublic.Thepublicdisclosureofthisinformationmightbeharmfultotheapplicantandprovide unjustifiedbenefitstoitscompetitors.TheApplicantunderstandsthatpursuanttoRule 0.457(d)(1)(ii),disclosureofthisApplicationandallaccompanyingmaterialswillnotbemadebefore thedateoftheGrantforthisApplication. Sincerely, Signed: Printedname:LeoLi Title:Manager

External Photos

FCCID:2A4V8-K2509 FCCID:2A4V8-K2509 FCCID:2A4V8-K2509 FCCID:2A4V8-K2509

ID Label/Location Info

底贴尺寸：65x35mm 底贴位置：水平居中 k2509_米哈游底贴效果 41mm 183.5mm

Internal Photos

FCCID:2A4V8-K2509 FCCID:2A4V8-K2509 FCCID:2A4V8-K2509 FCCID:2A4V8-K2509 FCCID:2A4V8-K2509

RF Exposure Info

Page1of3 RFEXPOSUREEVALUATION FCCID:2A4V8-K2509 ProductName: RGBdualsystemthreemodemechanicalkeyboard ModelName: Air108metallic BluetoothVersion:BT5.4 Operatingfrequency: 2404-2480MHzforSRD 2402-2480MHzforDTS NumbersofChannel: 39channelsforSRD 40channelsforBLE AntennaType:PCBantenna AntennaGain:2.96dBi TypeofModulation:GFSK Powersupply: Input:5V⎓500mA Battery:3.7V,4000mAh14.8Wh HardwareVersion:YAAH-04AL-K2509-0054 SoftwareVersion:V102 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. RFOutputpower Freq. (MHz) Fieldstrength(max)(dBuV/m) EIRP(max) (dBm) 2404 93.33-1.87 Note:EIRP=E-104.8+20logD, Where EistheelectricfieldstrengthindBμV/m. EIRPistheequivalentisotropicallyradiatedpowerindBm. disthespecifiedmeasurementdistanceinm. whereD=3,EIRP=E-95.2. Page3of3 Channel (MHz) Maximum output power (dBm) Tuneup tolerance (dBm) MaxTune UpPower (mW) Distance (mm) Calculation results Limit Operating Mode 24402.992.99±12.50610950.7829343BLE_1M 2404-1.87-1.87±10.81846550.25380332.4GSRD AccordingtoKDB447498,ThedevicesupportBTand2.4GSRDfunction,BTand2.4GSRD can’ttransmissionandnosimultaneousSARmeasurementisrequired. Signature SimonPu Manager Date:2026-08-17

Test Report

Page 1 of 40 FCCTESTREPORT FCCID:2A4V8-K2509 Product: RGBdualsystemthreemodemechanicalkeyboard ModelName: Air108metallic Brand: N/A ReportNo.: PTC26071703201E-FC01 Preparedfor DONGGUANFLESPORTSELECTRONICSCO.,LTD. BlockB,WangwuzhouIndustrialZone,XinchengDistrict,ShilongTown,DongguanCity, GuangdongProvince Preparedby PreciseTesting&CertificationCo.,Ltd. Building1,No.6,TongxinRoad,DongchengStreet,Dongguan,Guangdong,China ReportNo.:PTC26071703201E-FC01 Page 2 of 40 1TESTRESULTCERTIFICATION Applicant’sname:DONGGUANFLESPORTSELECTRONICSCO.,LTD. Address: BlockB,WangwuzhouIndustrialZone,XinchengDistrict,ShilongTown, DongguanCity,GuangdongProvince Manufacture'sname:DONGGUANFLESPORTSELECTRONICSCO.,LTD. Address: BlockB,WangwuzhouIndustrialZone,XinchengDistrict,ShilongTown, DongguanCity,GuangdongProvince Productname:RGBdualsystemthreemodemechanicalkeyboard Modelname:Air108metallic Standards:FCCPart15SubpartC,Paragraph15.249 Testprocedure:ANSIC63.10-2020 TestDate:Jul.22,2026toAug.17,2026 DateofIssue:Aug.17,2026 TestResult:Pass ThisdevicedescribedabovehasbeentestedbyPTC,andthetestresultsshowthatthe equipmentundertest(EUT)isincompliancewiththeFCCrequirements.Anditisapplicableonly tothetestedsampleidentifiedinthereport. Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofPTC,this documentmaybealteredorrevisedbyPTC,personalonly,andshallbenotedintherevisionof thedocument. TestEngineer: Jackzhou/Engineer TechnicalManager: SimonPu/Manager ReportNo.:PTC26071703201E-FC01 Page 3 of 40 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.....................................................................................................................................11 4.3DESCRIPTIONOFSUPPORTUNITS..............................................................................................................................11 5CONDUCTEDEMISSION......................................................................................................................................................12 5.1E.U.T.OPERATION.......................................................................................................................................................12 5.2EUTSETUP...................................................................................................................................................................12 5.3TESTSET-UP(BLOCKDIAGRAMOFCONFIGURATION).............................................................................................13 5.4MEASUREMENTPROCEDURE.......................................................................................................................................13 5.5CONDUCTEDEMISSIONLIMIT.......................................................................................................................................13 5.6MEASUREMENTDESCRIPTION......................................................................................................................................13 5.7CONDUCTEDEMISSIONTESTRESULT........................................................................................................................13 6RADIATEDEMISSIONANDBANDEDGE........................................................................................................................16 6.1TESTSTANDARDANDLIMIT.........................................................................................................................................16 6.2TESTSETUP..................................................................................................................................................................17 6.3TESTPROCEDURE........................................................................................................................................................18 6.4TESTDATA....................................................................................................................................................................19 720DBBANDWIDTHTEST....................................................................................................................................................26 7.1TESTSTANDARDANDLIMIT.........................................................................................................................................26 7.2TESTSETUP..................................................................................................................................................................26 7.3TESTPROCEDURE...................................................................................................................................…

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Test Report

1/9 AntennaSpecification Product:K2509 ModelName:K2509_AIR108 Manufacture:DONGGUANFLESPORTSELECTRONICSCO.,LTD. Address: BlockB,WangwuzhouIndustrialZone,XinchengDistrict, ShilongTown,DongguanCity,GuangdongProvince TestItem:Antennagain;Radiationpatternandefficiency AntennaType:PCBAntenna FrequencyRange:2400MHz-2500MHz 2/9 Antennasize: 3/9 TestData PassiveTestFor2400-2500MHz FreqEffiEffiGainGainUHISDHISMaxMinDirectivityAttHAttV (MHz)(%)(dB)(dBi)(dBd)(%)(%)(dB)(dB)(dBi)(dB)(dB) 240053.51-2.722.470.3220.40733.12.47-10.515.1946.7747.04 241055.4-2.562.520.3721.31534.0872.52-10.215.0946.9447.16 242056.13-2.512.610.4621.81634.3132.61-10.015.1247.0247.39 243056.88-2.452.570.4222.3534.5342.57-9.485.0247.3147.67 244062.3-2.062.960.8124.61237.6852.96-8.575.0147.6847.91 245066.73-1.762.171.0226.37340.3533.17-7.694.9347.9848.27 246067.64-1.71.211.0626.77340.8713.21-7.164.9147.7948.02 247065.02-1.872.960.8126.00539.0192.96-7.084.8347.647.7 248065.71-1.821.940.7926.61639.0982.94-7.014.7647.9348.05 249068.7-1.632.130.8528.21340.4833-7.374.6348.147.95 250070.97-1.492.940.7929.56641.42.94-84.4348.1348.09 4/9 2400MHz 5/9 2450MHz 6/9 2500MHz 7/9 3DPatternfor2400MHz 8/9 3DPatternfor2450MHz 9/9 3DPatternfor2500MHz

Test Setup Photos

FCCID:2A4V8-K2509 ConductedEmission RadiatedSpuriousEmissions TestFrequencyFrom30MHz-1GHz FCCID:2A4V8-K2509 TestfrequencyfromAbove1GHz