2A5PJ-TM277Mouse

- DongguanDareu ElectronicsAudioCo., Ltd - FederalCommunicationsCommission Authorizationand EvaluationDivision EquipmentAuthorizationBranch 7435 OaklandMills Road Columbia,MD 21046 4/3/24 U.S. AgentDesignation Dongguan Dareu Electronics Audio Co., Ltd acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: 2A5PJ-TM277); Name and company of U.S. agent: Linkwld LLC Physical U.S. address of agent:1942 Broadway St. STE 314C, Boulder, CO, 80302, US FRN of U.S. agent:0033625682 Email address of U.S. agent:[email protected] Linkwld LLC acknowledges their obligation to accept service of process on behalf of Dongguan Dareu Electronics Audio Co., Ltd. . Dongguan Dareu Electronics Audio Co., Ltd. with the FRN 0032100323 accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Signature [Nameof U.S. agent]TimothyZhu [Title of U.S. agent]Manager [Companyof U.S. agent]LinkwldLLC 48_[model] US_Agent_2.911(d)(7)-U, V05

C5266091_X24_Ed.2 1/1 Dongguan Dareu Electronics Audio Co., LTD “Attestation Statements” TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 The Commission adopted rules that prohibit equipment authorization for “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List 1 , which is periodically updated. See the Covered List for more details. This Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) Applicant Company name: Dongguan Dareu Electronics Audio Co., LTD FRN: 0032100323 Grantee code: 2A5PJ FCC ID: 2A5PJ-TM277 Contact Name: Bo Jiang Address: Room 301, Building 3, No.3 Yuhua Rd., Juzhou area, Shijie Town, Dongguan, China Telephone No: +86 0769 8630 8806 Fax No: +86 0769 8630 8826 Email: [email protected] i. [Dongguan Dareu Electronics Audio Co., LTD] (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. The applicant must sign this certification. ii. [Dongguan Dareu Electronics Audio Co., LTD] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant [is not] (as a specifically named entity or any of its subsidiaries or affiliates) identified on the Covered List as an entity producing “covered” equipment. The applicant must sign this certification. [Dongguan Dareu Electronics Audio Co., LTD] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant [is not] identified on the Covered List as an entity producing “covered”equipment . Date: 2024/09/25 Applicant’s Name: Bo Jiang Title: R&D Manager Signature 1 The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist

DongguanDareuElectronicsAudioCo.,LTD DeclarationonModelDifferences We, DongguanDareuElectronicsAudioCo.,LTD Room301,Building3,No.3YuhuaRd.,Juzhouarea,ShijieTown,Dongguan,China Declarethatthefollowingproduct(s): FCCID:2A5PJ-TM277 ProductName:Mouse ModelNo.:TM277M,M512 Utilizetheidenticalcircuitdesign,PCBlayout,shieldingandinterfacewith(TM277M),only modelnamedifferent.Thereforethisapplicationcanberegardedasidenticalinperformance tothesubmittedtestsample. Themanufacturerwouldtakealltheresponsibilitiesfortheaboveproduct(s). Forandonbehalfof Sincerely, Signature BoJiang R&DManager DongguanDareuElectronicsAudioCo.,LTD *IherebydeclarethatIamentitledtosignonbehalfoftheapplicantandthattheinformationsuppliediscorrectandcomplete.

C5266091_X8_Ed.1 1/1 Letter of Authorization Dongguan Dareu Electronics Audio Co., LTD Company: Dongguan Dareu Electronics Audio Co., LTD Address: Room 301, Building 3, No.3 Yuhua Rd., Juzhou area, Shijie Town, Dongguan, China Product Name: Mouse Model Number: TM277M, M512 FCC Identifier: 2A5PJ-TM277 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Bo Jiang Date: 2024.09.25 Title: R&D Manager Signature of applicant:

C5266091_X10_Ed.2 1/1 DongguanDareuElectronicsAudioCo.,LTD OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 Date:2024-09-25 Subject:RequestforConfidentiality FCCID:2A5PJ-TM277 ToWhomItMayConcern, PursuanttotheprovisionsofSections0.457and0.459ofCommission'srules (47CFR0.457,0.459),wearerequestingtheCommissiontowithholdthefollowing attachment(s)asconfidentialdocumentfrompublicdisclosure. ExhibitsLong-Term Confidentiality Short-TermConfidentiality 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__180__daysfromthedateofthe GrantofEquipmentAuthorizationandpriortomarketing. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondentduringcertificationreviewprocesscannotbegrantedasconfidential documentsandthoseinformationwillbeavailableforpublicreviewoncethegrantof equipmentauthorizationisissued. C5266091_X10_Ed.2 1/1 Sincerely, Signature: Name:BoJiang Title:R&DManager 2024.09.25

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RFEXPOSUREEVALUATION FCCID:2A5PJ-TM277 AccordingtoKDB447498D01MobileandPortableDevicesRFExposure ProceduresandEquipmentAuthorizationPoliciesv06. AccordingtoFCC1.1310:Thecriterialistedinthefollowingtableshallbeusedto evaluatetheenvironmentimpactofhumanexposuretoradiofrequency(RF)Radiationas specifiedin§1.1307(b): RoutineSARevaluationreferstothatspecificallyrequiredby§2.1093,using measurementsorcomputersimulation.WhenroutineSARevaluationisnotrequired, portabletransmitterswithoutputpowergreaterthantheapplicablelowthresholdrequire SARevaluationtoqualifyforTCBapproval. Channel (MHz) Maximum output power (dBm) Tuneup tolerance (dBm) MaxTuneUp Power(dBm) Distance (mm) Calculation results Limit Operating Mode 2402-2.87-2.87±1-1.87050.2023 BLE_1M2440-2.83-2.83 ±1 -1.83050.2053 2480-3.32-3.32±1-2.32050.1853 24034.394.39±15.39051.0733 2.4G24414.524.52 ±1 5.52051.1143 24804.734.73±15.73051.1783 Result:NoStandaloneSARtestisrequired.

ReportNo.:1812C40049012502Page1of35 FCCID:2A5PJ-TM277 FCCTestReport Applicant:DongguanDareuElectronicsAudioCo.,LTD Address: Room301,Building3,No.3YuhuaRd.,Juzhou area,ShijieTown,Dongguan,China ProductName:Mouse ReportDate:Sept.25,2024 ShenzhenAnbotekComplianceLaboratoryLimited ReportNo.:1812C40049012502Page2of35 FCCID:2A5PJ-TM277 Contents 1.GeneralInformation.................................................................................................................................6 1.1.ClientInformation...........................................................................................................................6 1.2.DescriptionofDevice(EUT)..........................................................................................................6 1.3.AuxiliaryEquipmentUsedDuringTest..........................................................................................7 1.4.Operationchannellist....................................................................................................................7 1.5.DescriptionofTestModes.............................................................................................................7 1.6.MeasurementUncertainty.............................................................................................................7 1.7.TestSummary................................................................................................................................8 1.8.DescriptionofTestFacility.............................................................................................................9 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....................................................................................................................................17 4.3.TestData......................................................................................................................................17 5.MaximumConductedOutputPower......................................................................................................18 5.1.EUTOperation.............................................................................................................................18 5.2.TestSetup....................................................................................................................................18 5.3.TestData......................................................................................................................................18 6.ChannelSeparation...............................................................................................................................19 6.1.EUTOperation.............................................................................................................................19 6.2.TestSetup....................................................................................................................................19 6.3.TestData......................................................................................................................................19 7.NumberofHoppingFrequencies...........................................................................................................20 7.1.EUTOperation.............................................................................................................................20 7.2.TestSetup....................................................................................................................................20 7.3.TestData......................................................................................................................................20 8.DwellTime..............................................................................................................................................21 8.1.EUTOperation.............................................................................................................................22 8.2.TestSetup....................................................................................................................................22 8.3.TestData......................................................................................................................................22 9.Emissionsinnon-restrictedfrequencybands.......................................................................................23 9.1.EUTOperation.............................................................................................................................24 9.2.TestSetup..................…

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Page 1 of 18 AppendixTestData ReportNo:1812C40049012502TestSampleNO:1-2-2 StartTestDate：2024.9.11FinishTestDate:2024.9.11 TestEngineer:Auditor: Temperature:24.7 °C RelativeHumidity:51% Pressure:101kPa AppendixA:20dBEmissionBandwidth TestResult TestModeAntennaFrequency[MHz] 20db EBW[MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict 2.4GAnt124032.372401.822404.19------ 2.4GAnt124412.352439.842442.18------ 2.4GAnt124802.352478.842481.18------ TestGraphs 2.4G-Ant1-2403 Page 2 of 18 2.4G-Ant1-2441 2.4G-Ant1-2480 Page 3 of 18 AppendixB:OccupiedChannelBandwidth TestResult TestModeAntennaFrequency[MHz] OCB[MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict 2.4GAnt124032.4282401.66932404.0969------ 2.4GAnt124412.4042439.69932442.1029------ 2.4GAnt124802.3742478.72332481.0969------ TestGraphs 2.4G-Ant1-2403 2.4G-Ant1-2441 Page 4 of 18 2.4G-Ant1-2480 Page 5 of 18 AppendixC:Maximumconductedoutputpower TestResultPeak Test Mode AntennaFrequency[MHz] ConductedPeak Power[dBm] Conducted Limit[dBm] Verdict 2.4GAnt124034.39≤20.97PASS 2.4GAnt124414.52≤20.97PASS 2.4GAnt124804.73≤20.97PASS TestGraphs 2.4G-Ant1-2403-PASS 2.4G-Ant1-2441-PASS Page 6 of 18 2.4G-Ant1-2480-PASS Page 7 of 18 AppendixD:Carrierfrequencyseparation TestResult TestModeAntennaFrequency[MHz]Result[MHz]Limit[MHz]Verdict 2.4GAnt1Hop 1.997 ≥1.58 PASS TestGraphs 2.4G-Ant1-Hop-PASS Page 8 of 18 AppendixE:Timeofoccupancy TestResult TestModeAntennaFrequency[MHz] BurstWidth [ms] TotalHops [Num] Result[s]Limit[s]Verdict 2.4GAnt1Hop0.1241010.013≤0.4PASS TestGraphs 2.4G-Ant1-Hop-PASS Page 9 of 18 AppendixF:Numberofhoppingchannels TestResult TestModeAntennaFrequency[MHz]Result[Num]Limit[Num]Verdict 2.4GAnt1Hop16≥15PASS TestGraphs 2.4G-Ant1-Hop-PASS Page 10 of 18 AppendixG:Bandedgemeasurements TestResult TestModeAntennaChNameFrequency[MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict 2.4GAnt1Low24034.05-47.75≤-15.95PASS 2.4GAnt1High24804.58-46.28≤-15.42PASS 2.4GAnt1LowHop_24030.89-47.43≤-19.11PASS 2.4GAnt1HighHop_24804.41-45.11≤-15.59PASS TestGraphs 2.4G-Ant1-2403-PASS Page 11 of 18 2.4G-Ant1-2480-PASS 2.4G-Ant1-Hop_2403-PASS 2.4G-Ant1-Hop_2480-PASS Page 12 of 18 AppendixH:ConductedSpuriousEmission TestResult TestModeAntennaFrequency[MHz] FreqRange [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict 2.4GAnt124030~Reference4.144.14---PASS 2.4GAnt1240330~10004.14-57.29≤-15.86PASS 2.4GAnt124031000~265004.14-43.53≤-15.86PASS 2.4GAnt124410~Reference4.594.59---PASS 2.4GAnt1244130~10004.59-57.76≤-15.41PASS 2.4GAnt124411000~265004.59-34.28≤-15.41PASS 2.4GAnt124800~Reference4.694.69---PASS 2.4GAnt1248030~10004.69-58.41≤-15.31PASS 2.4GAnt124801000~265004.69-31.22≤-15.31PASS TestGraphs 2.4G-Ant1-2403-0~Reference-PASS Page 13 of 18 2.4G-Ant1-2403-30~1000-PASS 2.4G-Ant1-2403-1000~26500-PASS Page 14 of 18 2.4G-Ant1-2441-0~Reference-PASS 2.4G-Ant1-2441-30~1000-PASS Page 15 of 18 2.4G-Ant1-2441-1000~26500-PASS 2.4G-Ant1-2480-0~Reference-PASS Page 16 of 18 2.4G-Ant1-2480-30~1000-PASS 2.4G-Ant1-2480-1000~26500-PASS Page 17 of 18 AppendixI:DutyCycle TestResult TestModeAntennaFrequency[MHz] ONTime [ms] Period [ms] DutyCycle [%] DutyCycle Factor[dB] 2.4GAnt124030.134.013.2414.89 2.4GAnt124410.124.012.9915.24 2.4GAnt124800.134.013.2414.89 TestGraphs NTNV-2.4G-Ant1-2403 NTNV-2.4G-Ant1-2441 Page 18 of 18 NTNV-2.4G-Ant1-2480 ---END---

ANTENNASPECIFICATION Summary ITEMMouseANT SPEC Model Name2.4G ANT Center Frequency 240 0MHz24 41 MHz2480 MHz 2.782.772.73 MAX. Gain2.78dBi AzimuthBeam Pattern Omni-directional Impedance50 Ohm ManufacturesDONGGUANSHUOCHUANGELECTRONICSCO LTD Address124 JinshanRoad，ChashanTown，DongguanCity，GuangdongProvince ANT Shapesnake structure AntennaPhoto & Length(mm) 2400MHz