2A8YI-N-J20PROPromise High-end Dual Mode Mechanical Keyboard

C5266091_X8_Ed.1 1/1 LetterofAuthorization SHENZHENSUNSONNYTECHNOLOGYCO.,LTD Company:SHENZHENSUNSONNYTECHNOLOGYCO.,LTD Address:Floor3,99-5,DayangRoad,XintianCommunity,Fuhai Street,BaoanDistrict,ShenzhenCity. ProductName:PromiseHigh-endDualModeMechanicalKeyboard ModelNumber:N-J20PRO,N-J50,N-J60,N-J80PRO,N-J90PRO,N-J220PRO,N- J880Pro,S-R600PRO,S-R628PRO,S-R666PRO,S-R2000PRO,S-R3000X, S-R5000PRO,RM70,L-K880 FCCIdentifier:2A8YI-N-J20PRO WeauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdelCarme,s/n, 08193Bellaterra,Spain,toactonourbehalfonallmattersconcerningthe abovenamedequipment. AnyindividualwithinLGAITechnologicalCenterS.A.isauthorizedtoactonour behalfandtakeactionontheapplication. WedeclarethatauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdel Carme,s/n,08193Bellaterra,Spain,isallowedtoforwardallinformation relatedtotheapprovalprojecttotheFederalCommunicationCommissionand todiscussanyissuesconcerningtheapprovalapplication.Anyandallacts carriedoutbyLGAITechnologicalCenterS.A.onourbehalfshallhavethe sameeffectasactsofourown. Name:ZailiangLiDate:2022-10-17 Title:Manager Signatureofapplicant:

C5266091_X10_Ed.2 1/1 SHENZHENSUNSONNYTECHNOLOGYCO.,LTD OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 Date:2022-10-17 Subject:RequestforConfidentiality FCCID:2A8YI-N-J20PRO ToWhomItMayConcern, PursuanttotheprovisionsofSections0.457and0.459ofCommission'srules (47CFR0.457,0.459),wearerequestingtheCommissiontowithholdthefollowing attachment(s)asconfidentialdocumentfrompublicdisclosure. ExhibitsLong-Term Confidentiality Short-Term Confidentiality NOTE2 IDLabel/LocationNoNo AttestationStatementNoNo ExternalPhotosNo ☐ BlockDiagram ☒☐ Schematics ☒☐ TestReportNoNo TestSetupPhotosNo ☐ User’sManual ☐ NOTE 1 ☐ InternalPhotos ☐ NOTE 1 ☐ PartsList/TuneUp ☐☐ RFExposureInfoNoNo OperationalDescription ☒☐ CoverLetter(s)NoNo SDRSoftware/SecurityInfo ☐ No NOTE1:Long-TermConfidentialitymaybepermittedunderspecialconditions(SeeII.LONG-TERMCONFIDENTIALITY,Section3of KDB726920,uselastinforce) NOTE2:Short-TermConfidentialitycanberequestedforamaximumof180daysfromthedateofthegrant. Abovementioneddocumentcontainsdetailedsystemandequipmentdescriptionare consideredasproprietaryinformationinoperationoftheequipment.Thepublic disclosureofabovedocumentsmightbeharmfultoourcompanyandwouldgive competitoranunfairadvantageinthemarket. Incaseofshort-termConfidentiality,theapplicantrequeststheexhibitsselected abovearewithheldfrompublicviewforaperiodofdaysfromthedateofthe GrantofEquipmentAuthorizationandpriortomarketing. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondentduringcertificationreviewprocesscannotbegrantedasconfidential documentsandthoseinformationwillbeavailableforpublicreviewoncethegrantof equipmentauthorizationisissued. Sincerely, C5266091_X10_Ed.2 1/1 Signature: Name:ZailiangLi Title:Manager

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Page 1 of 2 RF EXPOSURE EVALUATION Product Name : Promise High-end Dual Mode Mechanical Keyboard Model Name : N-J20PRO Additional model name N-J50, N-J60, N-J80PRO, N-J90PRO, N-J220PRO, N-J880Pro, S-R600PRO, S-R628PRO, S-R666PRO, S-R2000PRO, S-R3000X, S-R5000PRO, RM70, L-K880 (Note: only the model is different) Bluetooth Version : BT BLE 2.4G Operating frequency : 2402-2480MHz Numbers of Channel : 40 channels For DTS 16 channels for 2.4G Antenna Type : PCB Antenna Antenna Gain : -1.52dBi Type of Modulation : GFSK Power supply : AAA*2 DC3V Hardware Version : BYKC-KBMD-HS6620-V1.0 Software Version : N/A Page 2 of 2 Standard Requirement According to § 15.247(i) and § 1.1307b(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess of the Commission’s guidelines. See KDB 447498 D01 General RF Exposure Guidance v06, section 4. 3. 1. The 1-g and 10-g SAR test exclusion thresholds for 100MHz to 6GHz at test separation distances ≤ 50mm are determined by: [ (max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)]*[ √f(GHz)] ≤3.0 for 1-g SAR and ≤7.5 for 10-g SAR extremity SAR, where ⚫ f(GHz) is the RF channel transmit frequency in GHz ⚫ Power and distance are rounded to the nearest mW and mm before calculation ⚫ The result is rounded to one decimal place for comparison. The test exclusions are applicable only when the minimum test separation distance is ≤ 50mm and for transmission frequencies between 100MHz and 6GHz. When the minimum test separation distance is <5mm, a distance of 5mm is applied to determine SAR test exclusion. Routine SAR evaluation refers to that specifically required by § 2.1093, using measurements or computer simulation. When routine SAR evaluation is not required, portable transmitters with output power greater than the applicable low threshold require SAR evaluation to quality for TCB approval. Channel (MHz) Maximum output power (dBm) Tune up tolerance (dBm) Max Tune Up Power (mW) Distance (mm) Calculation results Limit Operating Mode 2402 -9.14 -9.14 ± 1 0.153462 5 0.047568 3 BLE According to KDB 447498, no stand-alone required for BT antenna, and no simultaneous SAR measurement is required. Signature Ronnie Liu EMC Manager Date: 2022-10-17

AntennaSpecification Specifications Summary ITEMSPEC. ModelNameIBM2.4GHz CenterFrequency2402MHz-2.10dBi 2441MHz-1.78dBi 2480MHz-1.52dBi MAX.GAIN Polarization AzimuthBeamPattern Impedance AntennaLength -1.52dBi Horizontal Omni-directional 50 Ω 34.6mm AntennaPhoto&Length（mm） providerSHENZHEN SUNSONNY TECHNOLOGY CO.,LTD 1.Mainantenna:2402MHz 1.1Horizontal 1.2Vertical 2.Mainantenna:2441MHz 2.1Horizontal 2.2Vertica . 3.Mainantenna:2480MHz 3.1Horizontal 3.2Vertical 4.Result CenterFrequencyMaximumAntGain 2402MHzH-2.10dBi V-5.02dBi 2441MHzH-1.78dBi V-5.80dBi 2480MHzH-1.52dBi V-4.52dBi

Page 1 of 50 FCC TEST REPORT FCC ID: 2A8YI-N-J20PRO Product : Promise High-end Dual Mode Mechanical Keyboard Model Name : N-J20PRO Brand : N/A Report No. : PTC22091404001E-FC01 Prepared for SHENZHEN SUNSONNY TECHNOLOGY CO.,LTD Floor3,99-5,Dayang Road,Xintian Community,Fuhai Street,BaoanDistrict,Shenzhen City. Prepared by Precise Testing & Certification Co., Ltd Building 1, No. 6, Tongxin Road, Dongcheng Street, Dongguan, Guangdong, China Report No.: PTC22091404001E-FC01 Page 2 of 50 1 TEST RESULT CERTIFICATION Applicant’s name : SHENZHEN SUNSONNY TECHNOLOGY CO.,LTD Address : Floor3,99-5,Dayang Road,Xintian Community,Fuhai Street,BaoanDistrict,Shenzhen City. Manufacture's name : SHENZHEN SUNSONNY TECHNOLOGY CO.,LTD Address : Floor3,99-5,Dayang Road,Xintian Community,Fuhai Street,BaoanDistrict,Shenzhen City. Product name : Promise High-end Dual Mode Mechanical Keyboard Model name : N-J20PRO Standards : FCC CFR47 Part 15 Section 15.247 Test procedure : ANSI C63.10:2013 Test Date : Sep. 27, 2022 to Oct. 13, 2022 Date of Issue : Oct. 17, 2022 Test Result : Pass This device described above has been tested by PTC, and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of PTC, this document may be altered or revised by PTC, personal only, and shall be noted in the revision of the document. Test Engineer: Simon Pu / Engineer Technical Manager: Ronnie Liu / Manager Report No.: PTC22091404001E-FC01 Page 3 of 50 Contents Page 1 TEST RESULT CERTIFICATION .............................................................................................................................. 2 2 TEST SUMMARY ......................................................................................................................................................... 5 2.1 TEST SITE ........................................................................................................................................................... 6 3 GENERAL INFORMATION ..................................................................................................................................... 7 3.1 GENERAL DESCRIPTION OF E.U.T. .................................................................................................................... 7 3.2 CHANNEL LIST .................................................................................................................................................... 8 4 EQUIPMENT DURING TEST .................................................................................................................................. 9 4.1 EQUIPMENTS LIST ............................................................................................................................................ 9 4.2 MEASUREMENT UNCERTAINTY ......................................................................................................................... 11 4.3 DESCRIPTION OF SUPPORT UNITS ................................................................................................................... 12 5 CONDUCTED EMISSION ......................................................................................................................................... 13 5.1 E.U.T. OPERATION ........................................................................................................................................... 13 5.2 EUT SETUP ...................................................................................................................................................... 13 5.3 TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................................. 14 5.4 MEASUREMENT PROCEDURE ........................................................................................................................... 14 5.5 CONDUCTED EMISSION LIMIT ........................................................................................................................... 14 5.6 MEASUREMENT DESCRIPTION .......................................................................................................................... 14 5.7 CONDUCTED EMISSION TEST RESULT ............................................................................................................. 14 6 RADIATED SPURIOUS EMISSIONS ..................................................................................................................... 15 6.1 EUT OPERATION .............................................................................................................................................. 15 6.2 TEST SETUP ..................................................................................................................................................... 16 6.3 SPECTRUM ANALYZER SETUP .......................................................................................................................... 17 6.4 TEST PROCEDURE ............................................................................................................................................ 18 6.5 SUMMARY OF TEST RESULTS .......................................................................................................................... 20 7 CONDUCT BAND EDGE AND SPURIOUS EMISSIONS MEASUREMENT ................................................... 27 7.1 TEST PROCEDURE ............................................................................................................................................ 27 7.2 TEST RESULT ................................................................................................................................................... 28 8 6DB BANDWIDTH MEASUREMENT ...........................................................................................…

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Page1of1 Declarationonmodeldifference We,SHENZHENSUNSONNYTECHNOLOGYCO.,LTD,theundersigned herebyconfirmthatthesemodelsareidentical,andallmodelshavethesame RFmoduleandAntenna,exceptformodelNo.fortradingpurpose. ProductnamePromiseHigh-endDualModeMechanicalKeyboard ModelNo. N-J20PRO,N-J50,N-J60,N-J80PRO,N-J90PRO,N-J220PRO,N- J880Pro,S-R600PRO,S-R628PRO,S-R666PRO,S-R2000PRO,S- R3000X,S-R5000PRO,RM70,L-K880 TradenameN/A FCCID2A8YI-N-J20PRO Confirmedby: Client’ssignature: Client’sname/title:ZailiangLi/Manager Date:2022-10-17

RadiatedEmissions From30MHz-1000MHz TestfrequencyfromAbove1GHz