2BBY9-SI-2191mechanical keyboard

-DongguanSuoaiElectronicsCo.,LTD- TheinformationprovidedinthisletterisbasedonthereferencedrulepartsofTitle47oftheCFRaswellasKDB986446D01. FederalCommunicationsCommission AuthorizationandEvaluationDivision EquipmentAuthorizationBranch 7435OaklandMillsRoad Columbia,MD21046 11/16/23 Towhomitmayconcern: We,[DongguanSuoaiElectronicsCo.,LTD],herebycertifythattheequipmentforwhich authorizationissought(FCCID:[2BBY9-SI-2191])isnot“covered”equipmentprohibitedfrom receivinganequipmentauthorizationpursuantto§2.903oftheFCCrules. Wealsocertifythat,asofthedateofthefilingoftheapplication,wearenotidentifiedontheCovered List(https://www.fcc.gov/supplychain/coveredlist)asanentityproducing“covered”equipment. Bysigningthisform,weconfirmtheaboveandthatweareawareoftheapplicationrequirements listedunder§2.911(b)and(d)(5)and(6). Sincerely, Signature [HuijunXie] [Engineer] [DongguanSuoaiElectronicsCo.,LTD] 6 2 _ [ m o d e l ] C o v e r e d E q u _ 2 . 9 1 1 ( d ) ( 5 ) ( i ) a n d ( i i ) - U , V 0 2

ProjectNo.:18220WC302322Page 1 of 4 AppendixII--ExternalPhotograph ProjectNo.:18220WC302322Page 2 of 4 ProjectNo.:18220WC302322Page 3 of 4 ProjectNo.:18220WC302322Page 4 of 4

LabelLocation: LabelSize:33mm*50mm

ProjectNo.:18220WC302322Page 1 of 4 AppendixIII--InternalPhotograph ProjectNo.:18220WC302322Page 2 of 4 ProjectNo.:18220WC302322Page 3 of 4 ANT ProjectNo.:18220WC302322Page 4 of 4

Page1of21 AppendixTestData ReportNo.:18220WC30232203TestSampleNo.:1-2-2 StartTestDate:2023.11.07FinishTestDate:2023.11.08 TestEngineer:Auditor: Temperature:26.3 °C RelativeHumidity:51% Pressure:101kPa AppendixA:DTSBandwidth TestResult TestModeAntennaFrequency[MHz] DTSBW [MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict 2.4GAnt1 24020.5042401.6682402.1720.5PASS 24400.5082439.6682440.1760.5PASS 24800.5042479.6722480.1760.5PASS Page2of21 TestGraphs 2.4G_Ant1_2402 2.4G_Ant1_2440 2.4G_Ant1_2480 Page3of21 Page4of21 AppendixB:OccupiedChannelBandwidth TestResult TestModeAntennaFrequency[MHz]OCB[MHz]FL[MHz]FH[MHz] 2.4GAnt1 24021.02852401.49302402.5215 24401.02942439.49482440.5242 24801.02352479.49652480.5200 Page5of21 TestGraphs 2.4G_Ant1_2402 2.4G_Ant1_2440 2.4G_Ant1_2480 Page6of21 Page7of21 AppendixC:Maximumconductedoutputpower TestResultPeak TestModeAntennaFrequency[MHz] ConductedPeak Power[dBm] Conducted Limit[dBm] Verdict 2.4GAnt1 24020.65≤30PASS 24401.64≤30PASS 24801.99≤30PASS Page8of21 TestGraphsPeak 2.4G_Ant1_2402 2.4G_Ant1_2440 2.4G_Ant1_2480 Page9of21 Page10of21 AppendixD:Maximumpowerspectraldensity TestResult TestModeAntennaFrequency[MHz]Result[dBm/3kHz]Limit[dBm/3kHz]Verdict 2.4GAnt1 2402-17.40≤8.00PASS 2440-16.36≤8.00PASS 2480-15.84≤8.00PASS Page11of21 TestGraphs 2.4G_Ant1_2402 2.4G_Ant1_2440 2.4G_Ant1_2480 Page12of21 Page13of21 AppendixE:Bandedgemeasurements TestResult TestModeAntennaChName Frequency [MHz] RefLevel[dBm]Result[dBm]Limit[dBm]Verdict 2.4GAnt1 Low24020.55-42.5≤-19.45PASS High24801.94-43.37≤-18.06PASS TestGraphs 2.4G_Ant1_Low_2402 2.4G_Ant1_High_2480 Page14of21 AppendixF:ConductedSpuriousEmission TestResult TestModeAntenna Frequency [MHz] FreqRange [MHz] RefLevel [dBm] Result[dBm]Limit[dBm]Verdict 2.4GAnt1 2402 Reference0.520.52---PASS 30~10000.52-40.52≤-19.48PASS 1000~265000.52-42.10≤-19.48PASS 2440 Reference1.461.46---PASS 30~10001.46-40.51≤-18.54PASS 1000~265001.46-40.70≤-18.54PASS 2480 Reference1.971.97---PASS 30~10001.97-67.86≤-18.03PASS 1000~265001.97-40.88≤-18.03PASS Page15of21 TestGraphs 2.4G_Ant1_2402_0~Reference 2.4G_Ant1_2402_30~1000 2.4G_Ant1_2402_1000~26500 Page16of21 2.4G_Ant1_2440_0~Reference 2.4G_Ant1_2440_30~1000 Page17of21 2.4G_Ant1_2440_1000~26500 2.4G_Ant1_2480_0~Reference 2.4G_Ant1_2480_30~1000 Page18of21 2.4G_Ant1_2480_1000~26500 Page19of21 AppendixG:DutyCycle TestResult TestModeAntennaFrequency[MHz] ONTime [ms] Period [ms] DutyCycle [%] DutyCycle Factor[dB] 2.4GAnt1 24020.090.6214.528.38 24400.100.6315.877.99 24800.090.6214.528.38 Page20of21 TestGraphs 2.4G_Ant1_2402 2.4G_Ant1_2440 2.4G_Ant1_2480 Page21of21 ---End---

ReportNo.:18220WC30232203FCCID:2BBY9-SI-2191Page1of31 FCCTestReport Applicant:DongguanSuoaiElectronicsCo.,LTD Address: No.3,HuayuStreet,Changlong Village,HuangjiangTown,Dongguan City,Guangdong,China ProductName:mechanicalkeyboard ReportDate:Nov.16,2023 ShenzhenAnbotekComplianceLaboratoryLimited ReportNo.:18220WC30232203FCCID:2BBY9-SI-2191Page2of31 Contents 1.GeneralInformation.................................................................................................................................6 1.1.ClientInformation...........................................................................................................................6 1.2.DescriptionofDevice(EUT)..........................................................................................................6 1.3.AuxiliaryEquipmentUsedDuringTest..........................................................................................6 1.4.Operationchannellist....................................................................................................................7 1.5.DescriptionofTestModes.............................................................................................................7 1.6.MeasurementUncertainty.............................................................................................................7 1.7.TestSummary................................................................................................................................8 1.8.DescriptionofTestFacility.............................................................................................................8 1.9.Disclaimer......................................................................................................................................9 1.10.TestEquipmentList...................................................................................................................10 2.Antennarequirement..............................................................................................................................12 2.1.Conclusion...................................................................................................................................12 3.ConductedEmissionatACpowerline..................................................................................................13 3.1.EUTOperation.............................................................................................................................13 3.2.TestSetup....................................................................................................................................13 3.3.TestData......................................................................................................................................14 4.OccupiedBandwidth..............................................................................................................................16 4.1.EUTOperation.............................................................................................................................16 4.2.TestSetup....................................................................................................................................16 4.3.TestData......................................................................................................................................16 5.MaximumConductedOutputPower......................................................................................................17 5.1.EUTOperation.............................................................................................................................17 5.2.TestSetup....................................................................................................................................17 5.3.TestData......................................................................................................................................17 6.PowerSpectralDensity..........................................................................................................................18 6.1.EUTOperation.............................................................................................................................18 6.2.TestSetup....................................................................................................................................18 6.3.TestData......................................................................................................................................18 7.Emissionsinnon-restrictedfrequencybands.......................................................................................19 7.1.EUTOperation.............................................................................................................................19 7.2.TestSetup....................................................................................................................................19 7.3.TestData......................................................................................................................................19 8.Bandedgeemissions(Radiated)..........................................................................................................20 8.1.EUTOperation.............................................................................................................................20 8.2.TestSetup....................................................................................................................................20 8.3.TestData......................................................................................................................................21 9.Emissionsinfrequencybands(below1GHz).......................................................................................23 9.1.EUTOperation.............................................................................................................................23 9.2.TestSetup..............................…

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Page1of21 AppendixTestData ReportNo.:18220WC30232202TestSampleNo.:1-2-2 StartTestDate:2023.11.07FinishTestDate:2023.11.08 TestEngineer:Auditor: Temperature:26.3 °C RelativeHumidity:51% Pressure:101kPa AppendixA:DTSBandwidth TestResult TestModeAntennaFrequency[MHz] DTSBW [MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict BLE_1MAnt1 24020.5042401.6722402.1760.5PASS 24400.5082439.6682440.1760.5PASS 24800.5082479.6682480.1760.5PASS Page2of21 TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 Page3of21 Page4of21 AppendixB:OccupiedChannelBandwidth TestResult TestModeAntennaFrequency[MHz]OCB[MHz]FL[MHz]FH[MHz] BLE_1MAnt1 24021.02542401.49602402.5214 24401.02922439.49702440.5262 24801.01992479.50222480.5221 Page5of21 TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 Page6of21 Page7of21 AppendixC:Maximumconductedoutputpower TestResultPeak TestModeAntennaFrequency[MHz] ConductedPeak Power[dBm] Conducted Limit[dBm] Verdict BLE_1MAnt1 24020.67≤30PASS 24401.60≤30PASS 24801.99≤30PASS Page8of21 TestGraphsPeak BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 Page9of21 Page10of21 AppendixD:Maximumpowerspectraldensity TestResult TestModeAntennaFrequency[MHz]Result[dBm/3kHz]Limit[dBm/3kHz]Verdict BLE_1MAnt1 2402-17.18≤8.00PASS 2440-16.41≤8.00PASS 2480-16.08≤8.00PASS Page11of21 TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 Page12of21 Page13of21 AppendixE:Bandedgemeasurements TestResult TestModeAntennaChName Frequency [MHz] RefLevel[dBm]Result[dBm]Limit[dBm]Verdict BLE_1MAnt1 Low24020.51-43.78≤-19.49PASS High24801.78-44.17≤-18.22PASS TestGraphs BLE_1M_Ant1_Low_2402 BLE_1M_Ant1_High_2480 Page14of21 AppendixF:ConductedSpuriousEmission TestResult TestModeAntenna Frequency [MHz] FreqRange [MHz] RefLevel [dBm] Result[dBm]Limit[dBm]Verdict BLE_1MAnt1 2402 Reference0.560.56---PASS 30~10000.56-43.82≤-19.44PASS 1000~265000.56-42.65≤-19.44PASS 2440 Reference1.531.53---PASS 30~10001.53-46.3≤-18.47PASS 1000~265001.53-40.89≤-18.47PASS 2480 Reference1.891.89---PASS 30~10001.89-43.5≤-18.11PASS 1000~265001.89-40.91≤-18.11PASS Page15of21 TestGraphs BLE_1M_Ant1_2402_0~Reference BLE_1M_Ant1_2402_30~1000 BLE_1M_Ant1_2402_1000~26500 Page16of21 BLE_1M_Ant1_2440_0~Reference BLE_1M_Ant1_2440_30~1000 Page17of21 BLE_1M_Ant1_2440_1000~26500 BLE_1M_Ant1_2480_0~Reference BLE_1M_Ant1_2480_30~1000 Page18of21 BLE_1M_Ant1_2480_1000~26500 Page19of21 AppendixG:DutyCycle TestResult TestModeAntennaFrequency[MHz] ONTime [ms] Period [ms] DutyCycle [%] DutyCycle Factor[dB] BLE_1MAnt1 24020.090.6214.528.38 24400.090.6314.298.45 24800.090.6214.528.38 Page20of21 TestGraphs BLE_1M_Ant1_2402 BLE_1M_Ant1_2440 BLE_1M_Ant1_2480 Page21of21 ---End---

ReportNo.:18220WC30232202FCCID:2BBY9-SI-2191Page1of31 FCCTestReport Applicant:DongguanSuoaiElectronicsCo.,LTD Address: No.3,HuayuStreet,Changlong Village,HuangjiangTown,Dongguan City,Guangdong,China ProductName:mechanicalkeyboard ReportDate:Nov.16,2023 ShenzhenAnbotekComplianceLaboratoryLimited ReportNo.:18220WC30232202FCCID:2BBY9-SI-2191Page2of31 Contents 1.GeneralInformation.................................................................................................................................6 1.1.ClientInformation...........................................................................................................................6 1.2.DescriptionofDevice(EUT)..........................................................................................................6 1.3.AuxiliaryEquipmentUsedDuringTest..........................................................................................6 1.4.Operationchannellist....................................................................................................................7 1.5.DescriptionofTestModes.............................................................................................................7 1.6.MeasurementUncertainty.............................................................................................................7 1.7.TestSummary................................................................................................................................8 1.8.DescriptionofTestFacility.............................................................................................................8 1.9.Disclaimer......................................................................................................................................9 1.10.TestEquipmentList...................................................................................................................10 2.Antennarequirement..............................................................................................................................12 2.1.Conclusion...................................................................................................................................12 3.ConductedEmissionatACpowerline..................................................................................................13 3.1.EUTOperation.............................................................................................................................13 3.2.TestSetup....................................................................................................................................13 3.3.TestData......................................................................................................................................14 4.OccupiedBandwidth..............................................................................................................................16 4.1.EUTOperation.............................................................................................................................16 4.2.TestSetup....................................................................................................................................16 4.3.TestData......................................................................................................................................16 5.MaximumConductedOutputPower......................................................................................................17 5.1.EUTOperation.............................................................................................................................17 5.2.TestSetup....................................................................................................................................17 5.3.TestData......................................................................................................................................17 6.PowerSpectralDensity..........................................................................................................................18 6.1.EUTOperation.............................................................................................................................18 6.2.TestSetup....................................................................................................................................18 6.3.TestData......................................................................................................................................18 7.Emissionsinnon-restrictedfrequencybands.......................................................................................19 7.1.EUTOperation.............................................................................................................................19 7.2.TestSetup....................................................................................................................................19 7.3.TestData......................................................................................................................................19 8.Bandedgeemissions(Radiated)..........................................................................................................20 8.1.EUTOperation.............................................................................................................................20 8.2.TestSetup....................................................................................................................................20 8.3.TestData......................................................................................................................................21 9.Emissionsinfrequencybands(below1GHz).......................................................................................23 9.1.EUTOperation.............................................................................................................................23 9.2.TestSetup..............................…

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version01 DongguanSuoaiElectronicsCo.,LTD DeclarationconcerningAntennaSpecification Itisherebydeclaredthattheproduct ModelNo.:K21,K81Pro,K108,K81,Hi9,Hi8,Hi75,F21,A75,GK600FS FCCID:2BBY9-SI-2191 fulfillstherequirementinFCCtestrelatingtotheantennatype. ThedevicespecifiedaboveconfirmstotheFCCrecommendationsfor internal antennatype(s) describedbelow: ModelNo.ofantenna:SF01 Typeofantenna:PCBAntenna Gainoftheantenna:0dBi Frequencyrange:2.4G:2400-2483MHz Themountingoftheantennaisfixedtotheradiomoduleandnootherantennashouldbeused. Companyname:DongguanSuoaiElectronicsCo.,LTD Address:No.3,HuayuStreet,ChanglongVillage,HuangjiangTown,Dongguan City,Guangdong,China City:DongguanCity,Guangdong ZIP/Postalcode:/ Country:China Place:Date:11/20/2023 Signature:

Antenna describe 1. Antenna describe: Antenna plate Monoploe antenna SF01 Make name/model name Antenna gain 0dBi Frequency range Connector type 2.4GHZ-2.483GHZ direct Location of SHENZHENXINYAO TECHNOLOGY.CO.,LTD mearement(company name) 2.External view drawing: Picture of antenna 3.Antenna Radiation Pattern Radiation [email protected] Total Average Gain:-0.475dbi Phi 0 45 90 135 180 235 270 315 -0.1 -0.3 -0.8 -0.5 -0.2 -0.6 -0.8 -0.5 Gain Radiation [email protected] Total Average Gain:-0.275dbi Phi 0 45 90 135 180 235 270 315 0 -0.1 -0.3 -0.6 -0.1 -0.2 -0.6 -0.4 Gain Radiation [email protected] Total Average Gain:-0.237dbi Phi 0 45 90 135 180 235 270 315 0 -0.1 -0.2 -0.5 0 -0.3 -0.6 -0.2 Gain

ProjectNo.:18220WC302322Page 1 of 2 AppendixI--TestSetupPhotograph_RF ConductedEmissionatACpowerline Emissionsinfrequencybands(below1GHz) ProjectNo.:18220WC302322Page 2 of 2 Emissionsinfrequencybands(above1GHz)