2BBY9-SI2583Keyboard

4. Multimedia key Rating DC 1.5V≤3mA Product Description 4 Wireless Keyboard SI-2583 Wireless Keyboard FCC STATEMENT : 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. Warning: 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 statement: The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. Battery slot On & off switch PANTONE 699C 128G铜板纸，两面印折页

-DongguanSuoaiElectronicsCo.,LTD- FederalCommunicationsCommission AuthorizationandEvaluationDivision EquipmentAuthorizationBranch 7435OaklandMillsRoad Columbia,MD21046 7/19/23 U.S.AgentDesignation [DongguanSuoaiElectronicsCo.,LTD]acknowledgestheirconsentforthefollowingcontactlocatedinthe UnitedStatestoactastheiragentforserviceofprocessfortheequipmentforwhichauthorizationissought(FCC ID:[2BBY9-SI2583]): NameandcompanyofU.S.agent:LinkwldLLC PhysicalU.S.addressofagent:1942BroadwaySt.STE314C,Boulder,CO,80302,US FRNofU.S.agent:0033625682 EmailaddressofU.S.agent:[email protected] [LinkwldLLC]acknowledgestheirobligationtoacceptserviceofprocessonbehalfof[DongguanSuoai ElectronicsCo.,LTD]. [DongguanSuoaiElectronicsCo.,LTD]withtheFRN[0033988882]acceptsitsobligationtomaintainanagent forserviceofprocessintheUnitedStatesfornolessthanoneyearaftereitherthegranteehaspermanently terminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S.,ortheconclusionofany Commission-relatedadministrativeorjudicialproceedinginvolvingtheequipment,whicheverislater. Bysigningthisform,weconfirmtheaboveandthatweareawareoftheapplicationrequirementslistedunder§ 2.911(d)(7). TheinformationprovidedinthisletterisbasedonthereferencedrulepartsofTitle47oftheCFRaswellasKDB 986446D01. Anexpirationdateforthisletterdoesnotexist.IncasetheU.S.agentchanges,thegranteeisobligatedtonotify theFCCwithin30daysviathegrantingTCB. Sincerely, Signature [HuijunXie] [Engineer] [DongguanSuoaiElectronicsCo.,LTD] Signature [TimothyZhu] [Manager] [LinkwldLLC] 4 8 _ [ m o d e l ] U S _ A g e n t _ 2 . 9 1 1 ( d ) ( 7 ) - U , V 0 5

-DongguanSuoaiElectronicsCo.,LTD- TheinformationprovidedinthisletterisbasedonthereferencedrulepartsofTitle47oftheCFRaswellasKDB986446D01. FederalCommunicationsCommission AuthorizationandEvaluationDivision EquipmentAuthorizationBranch 7435OaklandMillsRoad Columbia,MD21046 7/19/23 Towhomitmayconcern: We,[DongguanSuoaiElectronicsCo.,LTD],herebycertifythattheequipmentforwhich authorizationissought(FCCID:[2BBY9-SI2583])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.:18220WC301322Page1of4 Code:AB-RF-05-b AppendixII--ExternalPhotograph ProjectNo.:18220WC301322Page2of4 Code:AB-RF-05-b ProjectNo.:18220WC301322Page3of4 Code:AB-RF-05-b ProjectNo.:18220WC301322Page4of4 Code:AB-RF-05-b

LabelLocationOnEUT Label ProductName:Keyboard ModelNo.:SI2583 FCCID:2BBY9-SI2583 ThisdevicecomplieswithPart15oftheFCCRules.Operationis subjecttothefollowingtwoconditions: (1)Thisdevicemaynotcauseharmfulinterference,and (2) Thisdevicemustacceptanyinterferencereceived,including interferencethatmaycauseundesiredoperation.

ProjectNo.:18220WC301322Page1of2 Code:AB-RF-05-b AppendixIII--InternalPhotograph ProjectNo.:18220WC301322Page2of2 Code:AB-RF-05-b ANT

RFEXPOSUREEVALUATION FCCID:2BBY9-SI2583 AccordingtoFCC1.1310:Thecriterialistedinthefollowingtableshallbeused toevaluatetheenvironmentimpactofhumanexposuretoradiofrequency(RF) Radiationasspecifiedin§1.1307(b): RoutineSARevaluationreferstothatspecificallyrequiredby§2.1093,using measurementsorcomputersimulation.WhenroutineSARevaluationisnot required,portabletransmitterswithoutputpowergreaterthantheapplicable lowthresholdrequireSARevaluationtoqualifyforTCBapproval. Channel (MHz) Maximum outputpower (dBm) Tuneup tolerance (dBm) MaxTune UpPower (dBm) Distance (mm) Calculation results Limit Operating Mode 2405-1.67-1.67 ±1 -0.6750.2663 GFSK2451-3.13-3.13±1-2.1350.1923 2475-7.80-7.80±1-6.8050.0663 Result:NoStandaloneSARtestisrequired.

Page1of21 AppendixTestData ReportNo.:18220WC30132201TestSampleNo.:1-2-2 StartTestDate:2023.06.29FinishTestDate:2023.07.04 TestEngineer:Auditor: Temperature:25.4 °C RelativeHumidity:48% Pressure:1012hPa AppendixA:DTSBandwidth TestResult TestModeAntennaFrequency[MHz] DTSBW [MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict 2.4GAnt1 24051.4082404.2642405.6720.5PASS 24511.4842450.2602451.7440.5PASS 24751.5202474.2162475.7360.5PASS Page2of21 TestGraphs 2.4G_Ant1_2405 2.4G_Ant1_2451 2.4G_Ant1_2475 Page3of21 Page4of21 AppendixB:OccupiedChannelBandwidth TestResult TestModeAntennaFrequency[MHz]OCB[MHz]FL[MHz]FH[MHz] 2.4GAnt1 24052.21222403.85762406.0698 24512.23112449.85362452.0847 24752.24942473.83872476.0881 Page5of21 TestGraphs 2.4G_Ant1_2405 2.4G_Ant1_2451 2.4G_Ant1_2475 Page6of21 Page7of21 AppendixC:Maximumconductedoutputpower TestResultPeak TestModeAntennaFrequency[MHz] ConductedPeak Power[dBm] Conducted Limit[dBm] Verdict 2.4GAnt1 2405-1.67≤30PASS 2451-3.13≤30PASS 2475-7.80≤30PASS Page8of21 TestGraphsPeak 2.4G_Ant1_2405 2.4G_Ant1_2451 2.4G_Ant1_2475 Page9of21 Page10of21 AppendixD:Maximumpowerspectraldensity TestResult TestModeAntennaFrequency[MHz]Result[dBm/3kHz]Limit[dBm/3kHz]Verdict 2.4GAnt1 2405-12.19≤8.00PASS 2451-14.66≤8.00PASS 2475-16.92≤8.00PASS Page11of21 TestGraphs 2.4G_Ant1_2405 2.4G_Ant1_2451 2.4G_Ant1_2475 Page12of21 Page13of21 AppendixE:Bandedgemeasurements TestResult TestModeAntennaChName Frequency [MHz] RefLevel[dBm]Result[dBm]Limit[dBm]Verdict 2.4GAnt1 Low2405-4.38-44.71≤-24.38PASS High2475-10.88-56.14≤-30.88PASS TestGraphs 2.4G_Ant1_Low_2405 2.4G_Ant1_High_2475 Page14of21 AppendixF:ConductedSpuriousEmission TestResult TestModeAntenna Frequency [MHz] FreqRange [MHz] RefLevel [dBm] Result[dBm]Limit[dBm]Verdict 2.4GAnt1 2405 Reference-4.80-4.80---PASS 30~1000-4.80-60.39≤-24.8PASS 1000~26500-4.80-33.23≤-24.8PASS 2451 Reference-6.73-6.73---PASS 30~1000-6.73-60.46≤-26.73PASS 1000~26500-6.73-35.92≤-26.73PASS 2475 Reference-10.79-10.79---PASS 30~1000-10.79-60.08≤-30.79PASS 1000~26500-10.79-33.93≤-30.79PASS Page15of21 TestGraphs 2.4G_Ant1_2405_0~Reference 2.4G_Ant1_2405_30~1000 2.4G_Ant1_2405_1000~26500 Page16of21 2.4G_Ant1_2451_0~Reference 2.4G_Ant1_2451_30~1000 Page17of21 2.4G_Ant1_2451_1000~26500 2.4G_Ant1_2475_0~Reference 2.4G_Ant1_2475_30~1000 Page18of21 2.4G_Ant1_2475_1000~26500 Page19of21 AppendixG:DutyCycle TestResult Test Mode AntennaFrequency[MHz] ONTime [ms] Period [ms] DutyCycle [%] DutyCycle Factor[dB] 2.4GAnt1 240519.0019.001000.00 245119.0019.001000.00 247519.0019.001000.00 Page20of21 TestGraphs 2.4G_Ant1_2405 2.4G_Ant1_2451 2.4G_Ant1_2475 Page21of21 ---End---

ReportNo.:18220WC30132201FCCID:2BBY9-SI2583Page1of28 Code:AB-RF-05-b FCCTestReport Applicant:DongguanSuoaiElectronicsCo.,LTD Address: No.3,HuayuStreet,Changlong Village,HuangjiangTown,Dongguan City,Guangdong,China ProductName:Keyboard ReportDate:Jul.19,2023 ShenzhenAnbotekComplianceLaboratoryLimited ReportNo.:18220WC30132201FCCID:2BBY9-SI2583Page2of28 Code:AB-RF-05-b Contents 1.GeneralInformation............................................................................................................................................6 1.1.ClientInformation.....................................................................................................................................6 1.2.DescriptionofDevice(EUT)..................................................................................................................6 1.3.AuxiliaryEquipmentUsedDuringTest.................................................................................................7 1.4.DescriptionofTestConfiguration..........................................................................................................7 1.5.DescriptionOfTestSetup.......................................................................................................................8 1.6.TestEquipmentList.................................................................................................................................9 1.7.MeasurementUncertainty....................................................................................................................10 1.8.DescriptionofTestFacility....................................................................................................................10 2.SummaryofTestResults.................................................................................................................................11 3.ConductedEmissionTest................................................................................................................................12 3.1.TestStandardandLimit........................................................................................................................12 3.2.TestSetup...............................................................................................................................................12 3.3.TestProcedure.......................................................................................................................................12 3.4.TestData.................................................................................................................................................12 4.RadiationSpuriousEmissionandBandEdge.............................................................................................13 4.1.TestStandardandLimit........................................................................................................................13 4.2.TestSetup...............................................................................................................................................13 4.3.TestProcedure.......................................................................................................................................14 4.4.TestData.................................................................................................................................................15 5.MaximumPeakOutputPowerTest................................................................................................................23 5.1.TestStandardandLimit........................................................................................................................23 5.2.TestSetup...............................................................................................................................................23 5.3.TestProcedure.......................................................................................................................................23 5.4.TestData.................................................................................................................................................23 6.6dBOccupyBandwidthTest...........................................................................................................................24 6.1.TestStandardandLimit........................................................................................................................24 6.2.TestSetup...............................................................................................................................................24 6.3.TestProcedure.......................................................................................................................................24 6.4.TestData.................................................................................................................................................24 7.PowerSpectralDensityTest...........................................................................................................................25 7.1.TestStandardandLimit........................................................................................................................25 7.2.TestSetup...............................................................................................................................................25 7.3.TestProcedure.......................................................................................................................................25 7.4.TestData.................................................................................................................................................25 8.100kHzBandwidthofFrequencyBandEdgeRequirement......................................................................26 8.1.TestStandardandLimit........................................................................................................................26 ReportNo.:18220WC30132201FCCID:…

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DongguanSuoaiElectronicsCo.,LTD DeclarationconcerningAntennaSpecification Itisherebydeclaredthattheproduct ModelNo.:SI2583,SI2580,S801AG-C,S601AG-T,S801AG,AC306,SK-621,SK-646, K81,F68,F98 FCCID:2BBY9-SI2583 fulfillstherequirementinFCCtestrelatingtotheantennatype. ThedevicespecifiedaboveconfirmstotheFCCrecommendationsfor internal antennatype(s) describedbelow: ModelNo.ofantenna:ISM2.4GHz Typeofantenna:PCBAntenna Gainoftheantenna:1.92dBi Frequencyrange:2405~2475MHz Themountingoftheantennaisfixedtotheradiomoduleandnootherantennashouldbeused. Companyname:DongguanSuoaiElectronicsCo.,LTD Address:No.3,HuayuStreet,ChanglongVillage,HuangjiangTown,Dongguan City,Guangdong,China City:DongguanCity,Guangdong ZIP/Postalcode:/ Country:China Place:Date:7/19/2023 Signature: version01

Antenna Specification Specifications Summary ITEMSPEC. Model Name ISM 2.4 GHz Center Frequency 1.92 dBi 1.58 dBi - 2405 MHz 2 451 MHz 2475 MHz 0.49 dBi MAX. GAIN 1.92 dBi PolarizationHorizontal Azimuth Beam Pattern Omni-directional Impedance50Ω Antenna Photo 1 . M a i n a n t e nn a : 2 4 05 M H z 1 . 1 H o r i z o n t a l A n t e nn a M e a s u re m e n t S y s t e m y r t a 5 t A n t 4 nna P e tt w m R emar k 9 0 A n t . B r a n d : A n t . M o d e l : - 0 . 00 T e s t P e r s o n : - 1 0 . 00 - 2 0 . 0 O t h e r I n f o . : 2405 I E z 0 - 2 5 . 0 0 - 30 . 00 - 35 . 00 4 0 . 0 0 - 4 5 . 0 0 18 0 - 5 0 . 00 R u o p i T y i n t . P a l a r i z + m m H o r i zo I a x . v a l u e ( d B i ) 1 . 9 2 A v er a g e G a i n ( d B 1 ) - 4 . 7 9 I i n G a l n ( d B i ) - 5 1 . 8 : 2 7 0 1 . 2 V e r t i ca l A n t e nn a M e a s u remen t S y s t em S y t m S e t A n t un na P e tt w r n R am a r k 9 0 - 1 0 . 0 A n t . B r a n d : A n t . M o d e l : T e s t P e rson : O t h e r I n f o . : 2 4 05 I H z 0 - 5 . 00 — 0 . 00 - 5 . 0 0 - 1 0 . 0 0 - 1 5 . 0 0 - 20 . 0 0 - 2 5 . 0 0 - 3 0 . 0 0 35 . 0 0 40 . 00 - 45 . 00 1 8 0 - 50 . 0 0 民 得 p 事 i T 辈 L n t . Y er t i c I a x . v a l ue ( d B i ) - 9 . 19 A v e r a g e G a i n ( d B 1 ) - 1 5 . 3 I i n . C a i n ( d B i ) - 5 1 . 5 1 2 7 0 A n t e nna M ea s u r e m e n t S y s t e 2 . M a i n a n t e nn a : 2 4 51 M H z 2 . 1 H o r i z o n t a l m S y r t a S e t A n t 4 n m u P e t t w r m R e mar k 9 0 A n t . B r a n d : - 1 0 . 00 - 5 . 00 A n t . M o d e l : T e s t P e rs o n : - - 5 . 00 - 1 5 . 0 O t h er I n f o . : 2 451M E z 0 - 20 . 0 0 - 25 . 00 - 30 . 0 0 3 5 . 00 - 4 0 . 00 - 4 5 . 0 0 1 80 - - 50 . 00 R v p φ i Y I n t . H o r 1 z o I a x . v a l u e ( d B i ) 1 . 5 8 A v e r a g e G a i n ( d B 1 ) - 4 . 8 I i n . G a i n ( d B i ) - 51 . 2 2 7 0 2 . 2 V e r t i c a l A n t en n a M e a s u r e m e n t S y s t e m 列 t n S t 1 四 A n t t rm u P r t t w r n R em a r k 9 0 5 . 0 A n t . B r a n d : A n t . X o d e l : T e s t P e r so n : O t h e r I n f o . : 2 4 51 [ E z 0 - 5 . 00 - 1 0 . 00 - 1 5 . 00 - 20 . 00 - 25 . 00 - 30 . 00 - 3 5 . 00 - 4 0 . 00 - 45 . 00 P 1 80 R e o w i v w L n t . P a 1 a r i z + m Y e r t i c I a z . v a l u e ( d B 1 ) - 9 . 6 4 A v er a g e G a i n ( d B 1 ) - 1 4 . 9 I i n . C a i n ( d B i ) - 4 8 . 3 ! 2 7 0 3 . M a i n a n t e nn a : 2 4 7 5 M H z 3 . 1 H o r i z o n t a l A n t enne M e a s uremen t S y s t em 3 0 t ■ 2 a r 山 t a n y I tt i n H - r k 9 0 1 0 . 0 I n t , J r u n d : n t , p d p 1 : T e a t P A I B o m : O t h u r I n f o . : 2475MHz 0 - 5 . 00 — 0 . 00 - 5 . 00 - 1 0 . 00 - 1 5 . 00 - 20 . 00 - 3 0 . 0 0 - 35 . 00 - 10 . 00 4 5 . 00 1 8 0 - 50 . 0 0 k xa i w L t . R - 1 a r d va t a n D r 1 9 0 x . r u l a u ( d i ) - 0 . 4 5 I T o ru g o C x i n ( @ 1 ) - 6 . 32 i n a i n ( m i ) - 55 . 1 1 2 70 3 . 2 V e r t i ca l A n t e nn a H e a s u r e me n t S y a t e m S a t o n L h y π tt o n 山 t a t -- 上 90 - 1 0 . 0 l n t , J r u n d : n t , o d 1 : T e o t P UI P m : Q t h ur I n t o. : 2 475MHz 0 5 . 00 - 0 . 00 - 5 . 0 0 - 1 5 . 00 - 2 0 . 0 0 - 2 5 . 00 - 3 0 . 00 - 35 . 00 - 4 0 . 00 1 8 0 - 50 . 00 I x i t m L t . T a r t i d E x . r u 1 g ( m i ) - 11 . 5 山 T 0 T u g o C a i n ( di ) - 16 . 4 π n f u n ( @ i ) - 55 . 3 ; 2 7 0 4. Result Center Frequency Maximum Ant Gain H1.92 dBi 2405 MHz V-9.19dBi H1.58 dBi 2451 MHz V-9.64dBi H-0.49 dBi 2475 MHz V-11.5dBi

ProjectNo.:18220WC301322Page1of1 Code:AB-RF-05-b AppendixI--TestSetupPhotograph PhotoofRadiationEmissionTest