2BCNK-281281 Bluetooth Keyboard

ޢ瀦濰 㲴ফ Ӈࣿ▲㩌Ҡ࠲ ஺୏ FCCStatementThis device complies with part 15 of the FCC Rules. Operation is subject to t he following two conditions:(1)This device may not cause harmful interference, and(2)this device must accept any interference received, including interfe rence that may cause undesired operation.This equipment has been tested and found to comply with the limits for a Clas sBdigital device, pursuant to part 15 of the FCC Rules.These limits are designed to provide reasonable protection against harmf ul interference in a residential installation.This equipment generates, uses and can radiate radio frequency energy and ,ifnot installed and used in accordance with the instructions,may cause harmful interference to radio communications. However, there i snoguarantee that interference will not occur in a particular installation.If this equipment does cause harmful interference to radio or television r eception, 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 th efollowing 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 wh ich the receiver is connected..Consult the dealer or an experienced radio/TV technician for help.Caution: Any changes or modifications to this device not explicitly appro ved by manufacturer could void your authority to operate this equipment. RF Expo sure InformationThe device was evaluated to meet general RF exposure requirements. This eq uipment should be installed and used with a minimum distance of 0 mm between the radi ator and your body.

Page1of5FCCID:2BCNK-281 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. ExternalPhotos Photo1 Photo2 Page2of5FCCID:2BCNK-281 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo3 Photo4 Page3of5FCCID:2BCNK-281 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo5 Photo6 Page4of5FCCID:2BCNK-281 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo7 Photo8 Page5of5FCCID:2BCNK-281 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. Photo9 ------End------

Label FCCID:2BCNK-281

Page 1 of 4 FCC ID: 2BCNK-281 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. Internal Photos Photo 1 Photo 2 Page 2 of 4 FCC ID: 2BCNK-281 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. Photo 3 Photo 4 Page 3 of 4 FCC ID: 2BCNK-281 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. Photo 5 Photo 6 Antenna Page 4 of 4 FCC ID: 2BCNK-281 Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. Photo 7 ------End------

RFExposureevaluation FCCID:2BCNK-281 ApplicableStandard Accordingto§1.1307(b)(1),systemsoperatingundertheprovisionsofthissectionshallbeoperatedina mannerthatensuresthatthepublicisnotexposedtoradiofrequencyenergylevelinexcessofthe Commission’sguidelines. Accordingto§1.1310and§2.1093RFexposurerequirement KDB447498v06:MobileandPortableDevicesRFExposureProceduresandEquipmentAuthorization Policies 1.1.Requirement AccordingtoKDB447498D01GeneralRFExposureGuidancev06Section4.3.1StandaloneSARtest exclusionconsiderations:“UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures, standalone1-gheadorbodyand10-gextremitySARevaluationforgeneralpopulationexposureconditions, bymeasurementornumericalsimulation,isnotrequiredwhenthecorrespondingSARTestExclusion Thresholdcondition,listedbelow,issatisfied.Thesetestexclusionconditionsarebasedonsource-based time-averagedmaximumconductedoutputpoweroftheRFchannelrequiringevaluation,adjustedfortune-up tolerance,andtheminimumtestseparationdistancerequiredfortheexposureconditions.22Theminimum testseparationdistanceisdeterminedbythesmallestdistancefromtheantennaandradiatingstructuresor outersurfaceofthedevice,accordingtothehostformfactor,exposureconditionsandplatformrequirements, toanypartofthebodyorextremityofauserorbystander(see5)ofsection4.1).ToqualifyforSARtest exclusion,thetestseparationdistancesappliedmustbefullyexplainedandjustifiedbytheoperating configurationsandexposureconditionsofthetransmitterandapplicablehostplatformrequirements,typically intheSARmeasurementorSARanalysisreport,accordingtotherequiredpublishedRFexposureKDB procedures.WhennootherRFexposuretestingorreportingisrequired,astatementofjustificationand compliancemustbeincludedintheequipmentapproval,inlieuoftheSARreport,toqualifyfortheSARtest exclusion.Whenrequired,thedevicespecificconditionsdescribedintheotherpublishedRFexposureKDB proceduresmustbesatisfiedbeforeapplyingtheseSARtestexclusionprovisions;forexample,handheldPTT two-wayradios,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≤50mmandfor transmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtestseparationdistanceis<5 mm,adistanceof5mmaccordingto5)insection4.1isappliedtodetermineSARtestexclusion. 1.2.Manufacturingtolerance BR_EDR Frequency (MHz) GFSK 240224402480 Target(dBm)000 Tolerance±(dB)1.01.01.0 Frequency (MHz) π/4-DQPSK 240224402480 Target(dBm)111 Tolerance±(dB)1.01.01.0 Frequency (MHz) 8-DPSK 240224402480 Target(dBm)222 Tolerance ± (dB) 1.01.01.0 Page2of2 2.EvaluationResult EvaluationResults Band/Modef(GHz) Antenna Distance (mm) Max.RFoutputpower (includingtune-up tolerance) SARTest Exclusion Threshold SARTest Exclusion dBmmW BR_EDR2.553.0 2.0 0.631<3.0Yes 3.Conclusion ThemeasurementresultscomplywiththeFCCLimitper47CFR2.1093fortheuncontrolledRFExposure andSARExclusionThresholdperKDB447498v06 .....................EndofReport.........................

Page1of38ReportNo.:AIT23082404FW1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. TESTREPORT ClientInformation: Applicant:ShenzhenSouthChinaYingcaiTechnologyCO.，LTD Applicantadd.: Room102-301,QueweiBuilding,Building42,FuminIndustrialZone,Pinghu Community,PinghuStreet,LonggangDistrict,Shenzhen,Guangdong,China Manufacturer:ShenzhenSouthChinaYingcaiTechnologyCO.，LTD Manufactureradd.: Room102-301,QueweiBuilding,Building42,FuminIndustrialZone,Pinghu Community,PinghuStreet,LonggangDistrict,Shenzhen,Guangdong,China ProductInformation: ProductName:281BluetoothKeyboard ModelNo.:281,239,280,282,287,367,370 BrandName:N/A FCCID: 2BCNK-281 Applicablestandards: FCCCFRTitle47Part15SubpartCSection15.247 PreparedBy: DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang,Huangjiang,Dongguan, Guangdong,China Tel.:+86-769-82020499Fax.:+86-769-82020495 DateofReceipt:Aug.24,2023DateofTest:Aug.24,2023~Aug.29,2023 DateofIssue:Aug.30,2023TestResult:Pass ThisdevicedescribedabovehasbeentestedbyDongguanYaxu(AiT)TechnologyLimitedandthetest resultsshowthattheequipmentundertest(EUT)isincompliancewiththeFCCrequirements.Anditis applicableonlytothetestedsampleidentifiedinthereport. Note:Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofDongguan Yaxu(AiT)TechnologyLimited,thisdocumentmaybealteredorrevisedbyDongguanYaxu(AiT) TechnologyLimited,personalonly,andshallbenotedintherevisionofthedocument.Thistest reportmustnotbeusedbytheclienttoclaimproductendorsement. Reviewedby:Approvedby: SimbaHuangSeal.chen Page2of38ReportNo.:AIT23082404FW1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. 1Contents Page COVERPAGE 1CONTENTS......................................................................................................................................................................2 2TESTSUMMARY............................................................................................................................................................4 2.1StatementoftheMeasurementUncertainty................................................................................4 2.2MeasurementUncertainty............................................................................................................4 3TESTFACILITY..............................................................................................................................................................5 3.1Deviationfromstandard...............................................................................................................5 3.2Abnormalitiesfromstandardconditions.......................................................................................5 3.3TestLocation.................................................................................................................................5 4GENERALINFORMATION...........................................................................................................................................6 4.1Testfrequencies............................................................................................................................7 4.2EUTPeripheralList.......................................................................................................................8 4.3TestPeripheralList.......................................................................................................................8 4.4TESTMETHODOLOGY...............................................................................................................9 4.5DescriptionofTestModes..........................................................................................................10 5EQUIPMENTUSEDDURINGTEST.........................................................................................................................11 6TESTRESULTSANDMEASUREMENTDATA.....................................................................................................12 6.1Antennarequirement..................................................................................................................12 6.2PeakPowerMeasurement.........................................................................................................13 6.3FrequencySeparationand20dBBandwidth............................................................................15 6.4NumberofHoppingFrequency..................................................................................................17 6.5TimeofOccupancy(DwellTime)...............................................................................................18 6.6ConductedSpuriousEmissionsandBandEdgesTest.............................................................20 6.7Restrict-bandBand-edgeMeasurements..................................................................................22 6.8RadiatedEmissionsMeasurement............................................................................................24 6.9ConductedEmissions.................................................................................................................34 6.10Pseudorandomfrequencyhoppingsequence...........................................................................37 7TESTSETUPPHOTOGRAPHSOFEUT.................................................................................................................38 8EXTERNALPHOTOGRAPHSOFEUT....................................................................................................................38 9INTERNALPHOTOGRAPHSOFEUT.....................................................................................................................38 Page3of38ReportNo.:AIT23082404FW1 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. RevisionHistory RevisionIssueDateRevisionsRevisedBy 000 Aug.30,2023 InitialIssueSealChen Page4o…

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ANTENNA SPECIFICATON 1.Summary ITEM ANT SPEC Model Name 2.4G ANT Antenna plate PCB antenna Frequency range 2400-2500MHz MAX.Gain 1.0dBi Polarization Vertical Impedance 50 Ohm Manufacture Shenzhen Ai-Thinker Technology co., LTD Address: 410, Building C, Huafeng Smart Innovation Port, Gushu Second Road, Gushu Community, Xixiang Street, Bao'an District, Shenzhen 2.Antenna Photo &Length (mm) 3.Characteristic curve 4.Radiation Pattern X-Z Plane Y-Z Plane X-Y Plane 5.Gain efficiency test data

DongguanYaxu(AiT)TechnologyLimited ReportNo.:AIT23082404FW1 FCCID:2BCNK-281 Page1of61 AppendixA RFTestDataforBT(BDR/EDR)(ConductedMeasurement) ProductName:281BluetoothKeyboard TradeMark:N/A TestModel:281 EnvironmentalConditions Temperature:25.8°C RelativeHumidity:52.4% ATMPressure:101Kpa TestEngineer:SimbaHuang Supervisedby:SealChen DongguanYaxu(AiT)TechnologyLimited ReportNo.:AIT23082404FW1 FCCID:2BCNK-281 Page2of61 Contents Page COVERPAGE 1DutyCycle........................................................................................................................................................................................3 1.1TestResult............................................................................................................................................................................3 1.2TestGraphs...........................................................................................................................................................................4 2MaximumConductedPeakOutputPower........................................................................................................................................9 2.1TestResult............................................................................................................................................................................9 2.2TestGraphs.........................................................................................................................................................................10 320dBBandwidth..............................................................................................................................................................................15 3.1TestResult..........................................................................................................................................................................15 3.2TestGraphs.........................................................................................................................................................................16 4CarrierFrequencySeparation.........................................................................................................................................................21 4.1TestResult..........................................................................................................................................................................21 4.2TestGraphs.........................................................................................................................................................................22 5HoppingChannelNumber...............................................................................................................................................................24 5.1TestResult..........................................................................................................................................................................24 5.2TestGraphs.........................................................................................................................................................................25 6DwellTime......................................................................................................................................................................................27 6.1TestResult..........................................................................................................................................................................27 6.2TestGraphs.........................................................................................................................................................................28 7RFConductedSpuriousEmissions.................................................................................................................................................31 7.1TestResult..........................................................................................................................................................................31 7.2TestGraphs.........................................................................................................................................................................32 8Band-edgeforRFConductedEmissions........................................................................................................................................41 8.1TestResult..........................................................................................................................................................................41 8.2TestGraphs.........................................................................................................................................................................42 9Restrict-bandband-edgemeasurements........................................................................................................................................54 9.1TestResult..........................................................................................................................................................................54 9.2TestGraphs.........................................................................................................................................................................56 DongguanYaxu(AiT)TechnologyLimited ReportNo.:AIT23082404FW1 FCCID:2BCNK-281 Page3of61 1DutyCycle 1.1TestResult ModeFrequency(MHz)DutyCycle(%)1/T(kHz) 1-DH1240231.22.63 1-DH12441322.56 1-DH1248031.662.63 2-DH1240232.012.56 2-DH1244132.012.56 2-DH1248032.012.56 3-DH12402322.56 3-DH1244132.012.56 3-DH12480322.56 DongguanYaxu(AiT)TechnologyLimited ReportNo.:AIT23082404FW1 FCCID:2BCNK-281 Page4of61 1.2TestGraphs TestGraphs 1-DH12402MHz 1-DH12441MHz DongguanYaxu(AiT)TechnologyLimited ReportNo.:AIT23082404FW1 FCCID:2BCNK-281 Page5of61 1-DH12480MHz 2-DH12402MHz DongguanYaxu…

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Page1of2 FCCID:2BCNK-281 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. TestSetupPhoto RadiatedEmission Page2of2 FCCID:2BCNK-281 DongguanYaxu(AiT)TechnologyLimited No.22,Jinqianling3rdStreet,Jitigang, Huangjiang,Dongguan,Guangdong,China. ConductedEmission ------End------