2BEGI-CG100Chessnut Go Electronic chess Set

Thisdevicecomplieswithpart15oftheFCCRules.Operationissubjecttothefollowingtwoconditions:(1)Thisdevicemaynotcauseharmfulinterference, and(2)thisdevicemustacceptanyinterferencereceived,includinginterferencethatmaycauseundesiredoperation. AnyChangesormodificationsnotexpresslyapprovedbythepartyresponsibleforcompliancecouldvoidtheuser'sauthoritytooperatetheequipment. Note:ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassBdigitaldevice,pursuanttopart15oftheFCCRules.Theselimitsare designedtoprovidereasonableprotectionagainstharmfulinterferenceinaresidentialinstallation. Thisequipmentgeneratesusesandcanradiateradiofrequencyenergyand,ifnotinstalledandusedinaccordancewiththeinstructions,maycauseharmful interferencetoradiocommunications.However,thereisnoguaranteethatinterferencewillnotoccurinaparticularinstallation.Ifthisequipmentdoescause harmfulinterferencetoradioortelevisionreception,whichcanbedeterminedbyturningtheequipmentoffandon,theuserisencouragedtotrytocorrectthe interferencebyoneormoreofthefollowingmeasures: ‧ Reorientorrelocatethereceivingantenna. ‧ Increasetheseparationbetweentheequipmentandreceiver. ‧ Connecttheequipmentintoanoutletonacircuitdifferentfromthattowhichthereceiverisconnected. ‧ Consultthedealeroranexperiencedradio/TVtechnicianforhelp. ThedevicehasbeenevaluatedtomeetgeneralRFexposurerequirement.Thedevicecanbeusedinportableexposureconditionwithoutrestriction.

C5266091_X24_Ed.2 1/1 “AttestationStatements” TO: Officeof EngineeringTechnology FederalCommunicationsCommission 7435 OaklandMills Road Columbia,MD 21046 The Commissionadoptedrulesthatprohibitequipmentauthorizationfor “covered” telecommunicationsequipmentand videosurveillanceequipmentproducedby entitiesidentified on the Commission’s CoveredList 1 , whichis periodicallyupdated.See the CoveredList for more details.This AttestationStatementis to confirmthat we followthe Section2.911(d)(5)(i)-(ii) Applicant Companyname: Granteecode: FCC ID: Shenzhen WISO Technology Co.,Ltd 2BEGI FRN:0034574541 2BEGI-CG100 ContactName:Lyon Address:Room913, Building10, ShenzhenBay Tech-EcoPark, 10 GaoxinSouth9th Rd, NanshanDistrict,Shenzhen,China TelephoneNo:18507551723 Fax No:/ Email:[email protected] i.[ShenzhenWISOTechnologyCo.,Ltd] (“theapplicant”) certifiesthatthe equipmentforwhichauthorizationissoughtisnot“covered” equipment prohibitedfromreceivinganequipmentauthorizationpursuanttosection 2.903of theFCCrules.Theapplicantmustsignthiscertification. ii.[ShenzhenWISOTechnologyCo.,Ltd] (“theapplicant”) certifiesthat,asof thedateofthefilingof theapplication,theapplicant[isnot](asa specifically namedentityoranyofitssubsidiariesoraffiliates)identifiedontheCovered Listasanentityproducing“covered” equipment.Theapplicantmustsign thiscertification. [ShenzhenWISOTechnologyCo.,Ltd] (“the applicant”) certifiesthat, as of the date of the filing of the application,the applicant[is not] identifiedon the CoveredList as an entityproducing“covered” equipment. Date: 2024-07-15 Applicant’s Name:Lyon Title: CEO/Founder Signature 1 The Commission’s CoveredListis publishedby the PublicSafetyand HomelandSecurityBureauand postedon the Commission’s website.This CoveredList, whichis periodicallyupdated,identifiesparticularequipment,producedby particularentities,that constitutes“covered”equipment.https://www.fcc.gov/supplychain/coveredlist

ShenzhenWISOTechnologyCo.,Ltd ProductSimilarityDeclaration Productname:ChessnutGoElectronicchessSet Modelname:CG100,CG101,CG102,CG103,CG104 FCCID:2BEGI-CG100 We(ShenzhenWISOTechnologyCo.,Ltd)herebystatethatall themodelsareelectricalidenticalincludingthesamesoftware parameterandhardwaredesign(i.e.,circuitdesign,PCBLayout, RFmodule/circuit,antennatype(s)andantennalocation, componentsonPCB,etc.,),samemechanicalstructureand design(includingproductenclosure,materials,etc.,),theonly differenceisthemodelnameandcolor. Signature: Name:Lyon Title:CEO/Founder Place:china,date:2024-07-15

C5266091_X8_Ed.1 1/1 LetterofAuthorization ShenzhenWISOTechnologyCo.,Ltd Company:ShenzhenWISOTechnologyCo.,Ltd Address:Room913,Building10,ShenzhenBayTech-EcoPark,10 GaoxinSouth9thRd,NanshanDistrict,Shenzhen,China ProductName:ChessnutGoElectronicchessSet ModelNumber:CG100,CG101,CG102,CG103,CG104 FCCIdentifier:2BEGI-CG100 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:LyonDate:2024-07-15 Title:CEO/Founder Signatureofapplicant:

C5266091_X10_Ed.2 1/2 ShenzhenWISOTechnologyCo.,Ltd OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 Date:2024-07-15 Subject:RequestforConfidentiality FCCID:2BEGI-CG100 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 abovearewithheldfrompublicviewforaperiodof______daysfromthedateofthe GrantofEquipmentAuthorizationandpriortomarketing. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondentduringcertificationreviewprocesscannotbegrantedasconfidential documentsandthoseinformationwillbeavailableforpublicreviewoncethegrantof equipmentauthorizationisissued. C5266091_X10_Ed.2 2/2 Sincerely, Signature: Name:Lyon Title:CEO/Founder Date:2024-07-15

Page 1 of 5 Shenzhen NCT Testing Technology Co., Ltd. A101&2F B2, Fuqiao 6th Area, Xintian Community, Fuhai Street, Baoan District, Shenzhen, China Hotline: 400-8868-419Fax: 86-755-27790922http://www.ncttesting.cn FCC ID:2BEGI‐CG100 External Photos Page 2 of 5 Shenzhen NCT Testing Technology Co., Ltd. A101&2F B2, Fuqiao 6th Area, Xintian Community, Fuhai Street, Baoan District, Shenzhen, China Hotline: 400-8868-419Fax: 86-755-27790922http://www.ncttesting.cn Page 3 of 5 Shenzhen NCT Testing Technology Co., Ltd. A101&2F B2, Fuqiao 6th Area, Xintian Community, Fuhai Street, Baoan District, Shenzhen, China Hotline: 400-8868-419Fax: 86-755-27790922http://www.ncttesting.cn Page 4 of 5 Shenzhen NCT Testing Technology Co., Ltd. A101&2F B2, Fuqiao 6th Area, Xintian Community, Fuhai Street, Baoan District, Shenzhen, China Hotline: 400-8868-419Fax: 86-755-27790922http://www.ncttesting.cn Page 5 of 5 Shenzhen NCT Testing Technology Co., Ltd. A101&2F B2, Fuqiao 6th Area, Xintian Community, Fuhai Street, Baoan District, Shenzhen, China Hotline: 400-8868-419Fax: 86-755-27790922http://www.ncttesting.cn

Label Location Label

FCC TEST REPORT FCC ID: 2BEGI-CG100 Product:Chessnut Go Electronic Chess Set Model Name :CG100, CG101, CG102, CG103, CG104 Brand:Chessnut Report No.:NCT24020764XE Prepared for Shenzhen WISO Technology Co.,Ltd Room 913, Building 10, Shenzhen Bay Tech-Eco Park, 10 Gaoxin South 9th Rd, Nanshan District, Shenzhen, China Prepared by Shenzhen NCT Testing Technology Co., Ltd. A101&2F B2, Fuqiao 6th Area, Xintian Community, Fuhai Street, Baoan District, Shenzhen, People’s Republic of China TEL: 400-8868-419 FAX: 86-755-27790922 ReportNo.:NCT24020764XE Page 2 of 46 Hotline: 400-8868-419Fax: 86-755-27790922http://www.ncttesting.cn 1 TEST RESULT CERTIFICATION Applicant’s name: Shenzhen WISO Technology Co.,Ltd Address: Room 913, Building 10, Shenzhen Bay Tech-Eco Park, 10 Gaoxin South 9th Rd, Nanshan District, Shenzhen, China Manufacture's name : Shenzhen WISO Technology Co.,Ltd Address: Room 913, Building 10, Shenzhen Bay Tech-Eco Park, 10 Gaoxin South 9th Rd, Nanshan District, Shenzhen, China Product name: Chessnut Go Electronic Chess Set Model name: CG100, CG101, CG102, CG103, CG104 Standards: FCC CFR47 Part 15 Section 15.247 Test procedure: ANSI C63.10:2013 Date of test: May 17, 2024-Jun. 03, 2024 Date of Issue: Jun. 04, 2024 This device described above has been tested by NCT, 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 NCT, this document may be altered or revised by NCT, personal only, and shall be noted in the revision of the document. Test Engineer: Keven Wu / Engineer Technical Manager: Henry Wang / Manager ReportNo.:NCT24020764XE Page 3 of 46 Hotline: 400-8868-419Fax: 86-755-27790922http://www.ncttesting.cn Contents Page 1 TEST RESULT CERTIFICATION...............................................................................................................................2 2 TEST SUMMARY.......................................................................................................................................................... 5 2.1 T ESTSITE............................................................................................................................................................6 3 GENERAL INFORMATION..........................................................................................................................................7 3.1 G ENERALDESCRIPTION OFE.U.T.....................................................................................................................7 3.2 C HANNELLIST..................................................................................................................................................... 8 3.3 T ESTSETUPCONFIGURATION............................................................................................................................9 3.4 T ESTMODE......................................................................................................................................................... 9 4 EQUIPMENT DURING TEST.................................................................................................................................... 10 4.1 E QUIPMENTSLIST............................................................................................................................................. 10 4.2 M EASUREMENTUNCERTAINTY......................................................................................................................... 12 4.3 D ESCRIPTION OFSUPPORTUNITS...................................................................................................................12 5 CONDUCTED EMISSION.......................................................................................................................................... 13 5.1 E.U.T. O PERATION............................................................................................................................................13 5.2 EUT S ETUP....................................................................................................................................................... 13 5.3 T ESTSET-UP (BLOCKDIAGRAM OFCONFIGURATION)................................................................................. 14 5.4 M EASUREMENTPROCEDURE............................................................................................................................14 5.5 C ONDUCTEDEMISSIONLIMIT........................................................................................................................... 14 5.6 M EASUREMENTDESCRIPTION.......................................................................................................................... 14 5.7 C ONDUCTEDEMISSIONTESTRESULT.............................................................................................................14 6 RADIATED SPURIOUS EMISSIONS...................................................................................................................... 17 6.1 EUT O PERATION...............................................................................................................................................17 6.2 T ESTSETUP...................................................................................................................................................... 18 6.3 S PECTRUMANALYZERSETUP.......................................................................................................................... 19 6.4 T ESTPROCEDURE.............................................................................................................................................20 6.5 S UMMARY OFTESTRESULTS...........................................................................................................................23 7 CONDUCT BAND EDGE AND SPURIOUS E…

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Print PCB Antenna 1# 1. Macting & Photo ElementValue C2 10pF L21.5NH C113PF 2. Efficiency&Gain Frequency(MHz)EfficiencyAverage gain(dBi)Requirement(dBi)ResultPeak gain(dBi)RequirementResult 2400 38.87%-3.26 1.36 2410 38.88%-3.16 1.39 2420 39.44%-3.13 1.43 2430 40.35%-3.07 1.44 2440 40.12%-3.05 1.46 2450 40.32%-2.99 1.49 2460 40.66%-2.99 1.45 2470 40.43%-2.95 1.48 2480 40.34%-2.94 1.49 2490 40.76%-2.97 1.49 2500 40.79%-2.98 1.50 3. Radiated pattern E1E2H 4. Manufacturer Shenzhen WISO Technology Co.,Ltd Room 913, Building 10, Shenzhen Bay Science and Technology Ecological Park, No. 10, Gaoxin South 9th Road, High-tech Zone Community, Yuehai Street, Nanshan District, Shenzhen inch

Page 1 of 2 Shenzhen NCT Testing Technology Co., Ltd. A101&2F B2, Fuqiao 6th Area, Xintian Community, Fuhai Street, Baoan District, Shenzhen, China Hotline: 400-8868-419Fax: 86-755-27790922http://www.ncttesting.cn FCC ID:2BEGI‐CG100 Test Photo Page 2 of 2 Shenzhen NCT Testing Technology Co., Ltd. A101&2F B2, Fuqiao 6th Area, Xintian Community, Fuhai Street, Baoan District, Shenzhen, China Hotline: 400-8868-419Fax: 86-755-27790922http://www.ncttesting.cn