2AHN6-MSWS139Wireless Mouse

BytechNYInc. 2585West13thStreet,BrooklynNY11223,New York,UnitedStates Tel:001-718-449-3700|Fax:001-718-449-2488 E-mail:[email protected] Date:2026-07-15 To:FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 We,BytechNYInc.herebydeclarethat ： ProductName:WirelessMouse ModelNo.:BY-MS-WS-139-X3 SerialsNo:BY-MS-WS-140-X3 FCCID:2AHN6-MSWS139 Formarketingpurpose,thisproductonlysupports2.4GSRD(FrequencyRange:2402- 2479MHz;ModulationTechnique:GFSK).Theotherfunctionswasdisabledtouseby manufacturerinthesoftware,theenduserhasnocapabilitytoactivateit. . SincerelyYours, Signature: PrintedName:SoliMizrahi Title:President

CFR47§2.911(d)(5)(i)AttestationLetter BytechNYInc. 2585West13thStreet,BrooklynNY11223,New York,UnitedStates Tel:001-718-449-3700|Fax:001-718-449-2488 E-mail:[email protected] AttestationLetter Date:2026-07-15 FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsCFR47§2.911(d)(5)(i)Filing FCCID:2AHN6-MSWS139 BytechNYInc.certifiesthattheequipmentforwhichauthorizationissought,isnot“covered” equipmentprohibitedfromreceivinganequipmentauthorizationpursuanttosection2.903ofthe FCCrules. Sincerely, Signature: PrintedName:SoliMizrahi Title:President

CFR47§2.911(d)(5)(ii)AttestationLetter BytechNYInc. 2585West13thStreet,BrooklynNY11223, NewYork,UnitedStates Tel:001-718-449-3700|Fax:001-718-449-2488 E-mail:[email protected] AttestationLetter Date:2026-07-15 FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsCFR47§2.911(d)(5)(ii)Filing FCCID:2AHN6-MSWS139 BytechNYInc.certifiesthatasofthedateofthefilingoftheapplication,theapplicantisnot identifiedontheCoveredListasanentityproducing“covered”equipment. Wealsocertifythat,asofthedateofthefilingoftheapplication,theequipmentdoesnotutilize cyber-securityoranti-virussoftwarefromKasperskyLab,Inc,oranyofitssuccessorsand assignees,whichisalsoonthe“coveredlist”. Sincerely, Signature: PrintedName:SoliMizrahi Title:President

U.S.AGENTLETTEROFATTESTATION Date:2026-07-15 FEDERALCOMMUNICATIONSCOMMISSION AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsCFR47§2.911(d)(7)Filing FCCID:2AHN6-MSWS139 BytechNYInc.certifiesthat,asofthedateofthefilingoftheapplication,BytechNYInc. isourdesignatedU.S.agentforserviceofprocessfortheabovereferencedFCCID. BytechNYInc.acceptstomaintainanagentfornolessthanoneyearafterthegranteehas terminatedallmarketingandimportationortheconclusionofanyCommission-related proceedinginvolvingtheequipment. BytechNYInc.accepts,asofthedateofthefilingoftheapplication,theobligationofthe designatedU.S.agentforserviceofprocessfortheabovereferencedFCCID. DesignatedU.S.AgentandApplicantInformation: Name:BytechNYInc. Address:2585West13thStreet,BrooklynNY11223,NewYork,UnitedStates FRN:0025388125 Tel.:001-718-449-3700 Email:[email protected] Signedby(printedname):SoliMizrahi Signature:

BytechNYInc. 2585West13thStreet,BrooklynNY11223,New York,UnitedStates Tel:001-718-449-3700|Fax:001-718-449-2488 E-mail:[email protected] FCCAuthorization Date:2026-07-15 FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorization Towhomitmayconcern: We,BytechNYInc.,theundersigned,herebyauthorizeBayAreaComplianceLaboratoriesCorp. (Shenzhen)toactonitsbehalfinallmattersrelatingtoapplicationforEquipmentauthorization,including thesigningofalldocumentsrelatingtothesematters.AllactscarriedoutbyBayAreaCompliance LaboratoriesCorp.(Shenzhen)onourbehalfshallhavethesameeffectasourownaction. We,theundersigned,herebycertifythatwearenotsubjecttoadenialoffederalbenefits,thatincludes FCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseActof1988,21U.S.C.862. Thisauthorizationisvaliduntilfurtherwrittennoticefromtheapplicant. SincerelyYours, Signature: PrintedName:SoliMizrahi Title:President

BytechNYInc. 2585West13thStreet,BrooklynNY11223,New York,UnitedStates Tel:001-718-449-3700|Fax:001-718-449-2488 E-mail:[email protected] FCCConfidentialAuthorization Date:2026-07-15 FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestregardingapplicationforcertificationof FCCID:2AHN6-MSWS139 InaccordancewithSections0.457and0.459oftheCommission’sRules, BytechNYInc.herebyrequestslong-termconfidentialtreatmentofinformation accompanyingthisapplicationasoutlinedbelow: BlockDiagram Schematics OperationDescription Theabovematerialscontainproprietaryandconfidentialinformationnotcustomarily releasedtothepublic.Thepublicdisclosureofthesematerialsprovidesunjustified benefitstoitscompetitorsinthemarket. SincerelyYours, Signature: PrintedName:SoliMizrahi Title:President

BytechNYInc. 2585West13thStreet,BrooklynNY11223,New York,UnitedStates Tel:001-718-449-3700|Fax:001-718-449-2488 E-mail:[email protected] ProductSimilarityDeclaration Date:2026-07-15 To: FEDERALCOMMUNICATIONSCOMMISSIONS AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 DearSir/Madam, We,BytechNYInc.,herebydeclarethatwehaveaproductnamedasWireless Mouse(Model:BY-MS-WS-139-X3,FCCID:2AHN6-MSWS139)wastestedby BayAreaComplianceLaboratoriesCorp.(Shenzhen).Forourmarketing purpose,wewouldliketolistaseriesmodel(BY-MS-WS-140-X3)onreports andcertificate,allthemodelsareidenticalinschematics.Onlythemodel nameandcoloraredifferent.Nootherchangesaremadeonthem. Seethepicturebelowfordetailedappearancedifferences: Weconfirmthatallinformationaboveistrue,andwe’llberesponsibleforall theconsequences.Pleasecontactmeifyouhaveanyquestion SincerelyYours, Signature: PrintedName:SoliMizrahi Title:President

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601U66317E-RF-EXP Page 1 of 3 EUT EXTERNAL PHOTOGRAPHS BY-MS-WS-139-X3 BY-MS-WS-140-X3 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601U66317E-RF-EXP Page 2 of 3 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601U66317E-RF-EXP Page 3 of 3

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601U66317E-RF-INP Page 1 of 3 EUT INTERNAL PHOTOGRAPHS Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601U66317E-RF-INP Page 2 of 3 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601U66317E-RF-INP Page 3 of 3 Antenna

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601U66317E-RF-00 TR-EM-RF041 Page 10 of 44 Version 3.0 FCC §1.1307 (b) (3) &§2.1093 - RF EXPOSURE Applicable Standard According to FCC §2.1093 and §1.1307(b) (3), systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guideline. According to KDB 447498 D04 Interim General RF Exposure Guidance V01 1-mW Test Exemption: Per § 1.1307(b)(3)(i)(A), a single RF source is exempt RF device (from the requirement to show data demonstrating compliance to RF exposure limits, as previously mentioned) if the available maximum time-averaged power is no more than 1 mW, regardless of separation distance. This exemption applies to all operating configurations and exposure conditions, for the frequency range 100 kHz to 100 GHz, regardless of fixed, mobile, or portable device exposure conditions. This is a standalone exemption, and it cannot be applied in conjunction with any other test exemption. For worst case: Maximum EIRP Mode Frequency (MHz) Maximum E-Field (dBuV/m@3m) (dBm)(mW) 1-mW Test Exemption GFSK2402-2479 87.08 -8.120.154 Yes Note: EIRP = E-Field – 95.2 @3m Result: Compliant.

Note: The information marked # is provided by the applicant, the laboratory is not responsible for its authenticity and this information can affect the validity of the result in the test report. Customer model name, addresses, names, trademarks etc. are included. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. This report must not be used by the customer to claim product certification, approval, or endorsement by NVLAP or any agency of the U.S. Government. This report may contain data that are not covered by the NVLAP accreditation and are marked with an asterisk “▼”. Bay Area Compliance Laboratories Corp. (Shenzhen) 5F(B-West) , 6F, 7F, the 3rd Phase of Wan Li Industrial Building D, Shihua Rd, FuTian Free Trade Zone, Shenzhen, China Tel: +86-755-33320018 Fax: +86-755-33320008 www.baclcorp.com.cn TR-EM-RF041 Page 1 of 44 Version 3.0 TEST REPORT Applicant Name:Bytech NY lnc. Address:2585 West 13th Street, Brooklyn NY 11223, New York, United States Report Number:2601U66317E-RF-00 FCC ID:2AHN6-MSWS139 Test Standard (s) FCC PART 15.249 Sample Description Product Type:Wireless Mouse Model No.:BY-MS-WS-139-X3 Multiple Model(s) No.:BY-MS-WS-140-X3 Trade Mark:N/A Date Received:2026/06/24 Issue Date:2026/08/05 Test Result:Pass ▲ ▲ In the configuration tested, the EUT complied with the standards above. Prepared and Checked By:Approved By: Wing K JiNancy Wang RF EngineerRF Supervisor Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601U66317E-RF-00 TR-EM-RF041 Page 2 of 44 Version 3.0 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ..........................................................................................................................3 GENERAL INFORMATION ........................................................................................................................................4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT)......................................................................................4 OBJECTIVE ....................................................................................................................................................................4 TEST METHODOLOGY....................................................................................................................................................4 MEASUREMENT UNCERTAINTY .....................................................................................................................................5 TEST FACILITY ..............................................................................................................................................................5 SYSTEM TEST CONFIGURATION ...........................................................................................................................6 DESCRIPTION OF TEST CONFIGURATION .......................................................................................................................6 EUT EXERCISE SOFTWARE ...........................................................................................................................................6 EQUIPMENT MODIFICATIONS ........................................................................................................................................6 SUPPORT EQUIPMENT LIST AND DETAILS .....................................................................................................................6 SUPPORT CABLE DESCRIPTIONS ....................................................................................................................................6 BLOCK DIAGRAM OF TEST SETUP .................................................................................................................................7 SUMMARY OF TEST RESULTS ................................................................................................................................8 TEST EQUIPMENT LIST ............................................................................................................................................9 FCC §1.1307 (B) (3) &§2.1093 - RF EXPOSURE.........................................................................................................10 APPLICABLE STANDARD .............................................................................................................................................10 FCC§15.203 - ANTENNA REQUIREMENT ............................................................................................................11 APPLICABLE STANDARD .............................................................................................................................................11 ANTENNA CONNECTOR CONSTRUCTION .....................................................................................................................11 FCC§15.205, §15.209 & §15.249(A)(C)(D) - RADIATED EMISSIONS .................................................................12 APPLICABLE STANDARD .............................................................................................................................................12 EUT SETUP .................................................................................................................................................................12 EMI TEST RECEIVER & SPECTRUM ANALYZER SETUP ...............................................................................................14 TEST PROCEDURE........................................................................................................................................................14 FACTOR & OVER LIMIT/MARGIN CALCULATION ..............................................…

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Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601U66317E-RF-TSP Page 1 of 2 TEST SETUP PHOTOGRAPHS Radiated Emissions View (Below 30MHz) Radiated Emissions View (Below 1 GHz) Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601U66317E-RF-TSP Page 2 of 2 Radiated Emissions View (1-18 GHz) Radiated Emissions View (18-25 GHz)