2AIZN-XE39LTrue wireless earphones

(INFINIX MOBILITY LIMITED) (February 9, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2AIZN-XE39L#) [INFINIX MOBILITY LIMITED] (“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. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, Jerry Liu/ Manger (INFINIX MOBILITY LIMITED) (February 9, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: 2AIZN-XE39L#) [INFINIX MOBILITY LIMITED] (“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. Sincerely, Jerry Liu/ Manger

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INFINIX MOBILITY LIMITED Agent Authorization Letter (February 9, 2026) Eurofins MET Labs 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (WORLD STANDARDIZATION CERTIFICATION & TESTING GROUP (SHENZHEN) CO., LTD.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Client’s name / title : Jerry Liu/ Manger Company Name: INFINIX MOBILITY LIMITED Contact information / address: [email protected]/ FLAT N 16/F BLOCK B UNIVERSAL INDUSTRIAL CENTRE 19-25 SHAN MEI STREET FOTAN NT HONGKONG.

INFINIX MOBILITY LIMITED Long Term Confidentiality Request Letter (February 9, 2026) Eurofins MET Labs 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR EUT NAME: True wireless earphones Model No : XE39 FCC ID: 2AIZN- XE39L To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description - Bill of material required to be submitted with this application be permanently withheld from public review. The above-mentioned documents belong to internal documents, is our proprietary information, that could never get into the possession of our competition. Please contact me if there is any information you may need. Sincerely, Client’s name / title : Jerry Liu / Manger Company Name: INFINIX MOBILITY LIMITED Contact information / address: [email protected] FLAT N 16/F BLOCK B UNIVERSAL INDUSTRIAL CENTRE 19-25 SHAN MEI STREET FOTAN NT HONGKONG.

Short Term Confidentiality Request Letter (February 9, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Short Term Confidentiality Request For(True wireless earphones/XE39# 2AIZN-XE39L#) To Whom It May Concern: In accordance with sections 0.457 and 0.459 of CFR 47, < INFINIX MOBILITY LIMITED >. requests short-term Confidentiality of following sections of this application for a period of 180 days after grant is issued. Set up Photos Internal photos External photos User’s manual These documents contain detailed system and equipment descriptions and related information about the product, which < INFINIX MOBILITY LIMITED > considers to be proprietary, confidential, and a custom design and otherwise, would not release to the general public. Since this design is a basis from which future technological products will evolve, < INFINIX MOBILITY LIMITED.> feels that this information would be of benefit to its competitors, and that the disclosure of the information in these documents would give our competitors an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Yiting Luo / Manger Signature:

Page 1 of 7 FCC RF Exposure Report For INFINIX MOBILITY LIMITED FLAT N 16/F BLOCK B UNIVERSAL INDUSTRIAL CENTRE 19-25 SHAN MEI STREET FOTAN NT HONGKONG Model : XE39 Report Number: WSCT-ANAB-R&E260100007A Report Date: 05 February 2026 FCC ID: 2AIZN-XE39L Prepared By: World Standardization Certification & Testing Group (Shenzhen) Co., Ltd. Building A-B,Baoli'an Industrial Park,No.58 and 60,Tangtou Avenue, Shiyan Street, Bao'an District, Shenzhen City, Guangdong Province, China Tel: +86-755-26996192 Fax: +86-755-86376605 R eport No.: WSCT-ANAB-R&E260100007A SAR Evaluation Report P age 2 of 7 Table of contents 1 General information .......................................................................................................................................... 3 1.1 Notes ........................................................................................................................................................... 3 1.2 EUT Information ......................................................................................................................................... 4 2 Testing laboratory ............................................................................................................................................. 5 3 ACCREDITATIONS ............................................................................................................................................ 5 4 Applicant and Manufacturer ............................................................................................................................ 5 5 Test standard/s: ................................................................................................................................................ 5 6 Test result ........................................................................................................................................................... 6 7 Conclusion .......................................................................................................................................................... 7 Report No.: WSCT-ANAB-R&E260100007A SAR Evaluation Report Page 3 of 7 Modified History REV. Modification Description Issued Date Remark REV.1.0 Initial Test Report Relesse 05 February 2026 Li Huaibi 1 General information 1.1 Notes The test results of this test report relate exclusively to the test item specified in this test report. Shenzhen Timeway Testing Laboratories does not assume responsibility for any conclusions and generalisations drawn from the test results with regard to other specimens or samples of the type of the equipment represented by the test item. The test report is not to be reproduced or published in full without the prior written permission. R eport No.: WSCT-ANAB-R&E260100007A SAR Evaluation Report P age 4 of 7 1.2 EUT Information Device Information： Product Type: True wireless earphones Model: XE39 Trade Name: Infinix Device Type: Portable device Exposure Category: uncontrolled environment / general population Production Unit or Identical Prototype： Production Unit Antenna Type : FPC Antenna Device Operating Configurations: Modulation: GFSK, π/4-DQPSK, 8-DPSK Channel Separation: BT: 1MHz BLE:2MHz Operation Frequency: 2402MHz~2480MHz Antenna Gain: 1.47dBi Power Source: Rechargeable Li-ion Polymer Battery: YD1154 0.21945Wh 3.85V Charging Box: 602535 3.7V 500mAh 1.85Wh N ote:The test results of this test report relate exclusively to the test item specified in this test report. World Standardization Certification & Testing Group (Shenzhen) Co.,Ltd does not assume responsibility for any conclusions and generalisations drawn from the test results with regard to other specimens or samples of the type of the equipment represented by the test item. The test report is not to be reproduced or published in full without the prior written permission. R eport No.: WSCT-ANAB-R&E260100007A SAR Evaluation Report P age 5 of 7 2 Testing laboratory Test Site World Standardization Certification & Testing Group (Shenzhen) Co., Ltd. Laboratory A: Building A-B,Baoli'an Industrial Park,No.58 and 60,Tangtou Avenue, Shiyan Street, Bao'an District, Shenzhen City, Guangdong Province, China TEL: +86-755-26996192 FAX: +86-755-86376605 3 ACCREDITATIONS Our laboratories are accredited and approved by the following approval agencies according to ISO/IEC 17025:2017. USA ANAB - Certificate Number: AT-3951 China CNAS (Registration Number: L3732) Canada ISED(CAB identifier:CN0178) Copies of granted accreditation certificates are available for downloading from our web site, http://www.wsct-cert.com 4 Applicant and Manufacturer Applicant/Client Name: INFINIX MOBILITY LIMITED Applicant Address: FLAT N 16/F BLOCK B UNIVERSAL INDUSTRIAL CENTRE 19-25 SHAN MEI STREET FOTAN NT HONGKONG Manufacturer Name: INFINIX MOBILITY LIMITED Manufacturer Address: FLAT N 16/F BLOCK B UNIVERSAL INDUSTRIAL CENTRE 19-25 SHAN MEI STREET FOTAN NT HONGKONG 5 Test standards: No. Identity Document Title 1 47 CFR Part 15C Radio frequency devices intentional radiators 2 47 CFR Part 2.1093 Radio frequency radiation exposure evaluation: portable devices 3 KDB447498 D01 General RF Exposure Guidance v06 Report No.: WSCT-ANAB-R&E260100007A SAR Evaluation Report Page 6 of 7 6 Test result According KDB 447498 D01 4.3.1 General SAR test exclusion guidance Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. These test exclusion conditions are based on source-based time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions. The minimum test separation distance defined in 4.1 f) …

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ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page2of78 TABLEOFCONTENTS 1.TestCertification.........................................................................................3 2.TestResultSummary..................................................................................4 3.EUTDescription...........................................................................................5 4.GeneraInformation.....................................................................................7 4.1.TESTENVIRONMENTANDMODE..............................................................................................................7 4.2.DESCRIPTIONOFSUPPORTUNITS..........................................................................................................7 5.FacilitiesandAccreditations.....................................................................8 5.1.FACILITIES.............................................................................................................................................8 5.2.ACCREDITATIONS.............................................................................................................................8 5.3.MEASUREMENTUNCERTAINTY................................................................................................................9 5.4.MEASUREMENTINSTRUMENTS....................................................................................................10 6.TestResultsandMeasurementData......................................................11 6.1.ANTENNAREQUIREMENT......................................................................................................................11 6.2.CONDUCTEDEMISSION.........................................................................................................................12 6.3.CONDUCTEDOUTPUTPOWER..............................................................................................................16 6.4.20DBOCCUPYBANDWIDTH.................................................................................................................23 6.5.CARRIERFREQUENCIESSEPARATION...................................................................................................30 6.6.HOPPINGCHANNELNUMBER...............................................................................................................37 6.7.DWELLTIME........................................................................................................................................41 6.8.PSEUDORANDOMFREQUENCYHOPPINGSEQUENCE.............................................................................52 6.9.CONDUCTEDBANDEDGEMEASUREMENT............................................................................................53 6.10.CONDUCTEDSPURIOUSEMISSIONMEASUREMENT...............................................................................56 6.11.RADIATEDSPURIOUSEMISSIONMEASUREMENT...................................................................................66 7.TestSetupPhotographs...........................................................................78 ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page4of78 2.TestResultSummary RequirementCFR47SectionResult AntennaRequirement§15.203/§15.247(c)PASS ACPowerLineConducted Emission §15.207PASS Maximumconductedoutput power §15.247(b)(1) §2.1046 PASS 20dBOccupiedBandwidth §15.247(a)(1) §2.1049 PASS CarrierFrequencies Separation §15.247(a)(1)PASS HoppingChannelNumber§15.247(a)(1)PASS DwellTime§15.247(a)(1)PASS RadiatedEmission §15.205/§15.209 §2.1053,§2.1057 PASS BandEdge §15.247(d) §2.1051,§2.1057 PASS Note: 1.PASS:Testitemmeetstherequirement. 2.Fail:Testitemdoesnotmeettherequirement. 3.N/A:Testcasedoesnotapplytothetestobject. 4.Thetestresultjudgmentisdecidedbythelimitofteststandard. ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page5of78 3.EUTDescription ProductName: Truewirelessearphones Model: XE39 TradeMark: Infinix OperationFrequency: 2402MHz~2480MHz ChannelSeparation: 1MHz NumberofChannel: 79 ModulationType: GFSK,π/4-DQPSK,8-DPSK AntennaType:FPCAntenna AntennaGain:1.47dBi OperatingVoltage: RechargeableLi-ionPolymerBattery:YD1154 0.21945Wh 3.85V ChargingBox:602535 3.7V500mAh1.85Wh Remark:N/A. Note:1.N/Astandsfornoapplicable. 2.Theantennagainisprovidedbythecustomer.Foranyreporteddataissuescausedbythe antennagain,WorldStandardizationCertification&TestingGroup(Shenzhen)Co.,Ltdassumesno responsibility. 3.Thelaboratoryshallberesponsibleforallinformationinthereport,exceptfortheinformation providedbytheclient.Thedataprovidedbytheclientshouldbeclearlyidentified.Inaddition, whentheinformationprovidedbytheclientmayaffectthevalidityoftheresults,adisclaimer shouldbeincludedinthereport.Whenthelaboratoryisnotresponsibleforsampling(suchas whenthesampleisprovidedbythecustomer),theresultsshouldbedeclaredinthereportas applicabletothereceivedsample. ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page6of78 OperationFrequencyeachofchannelforGFSK,π/4-DQPSK,8DPSK ChannelFrequencyChannelFrequencyChannelFrequencyChannelFrequency 02402MHz202422MHz402442MHz602462MHz 12403MHz212423MHz412443MHz612463MHz ........................ 102412MHz302432MHz502452MHz702472MHz 112413MHz312433MHz512453MHz712473MHz ........................ 182420MHz382440MHz582460MHz782480MHz 192421MHz392441MHz592461MHz- Remark:Channel0,39&78havebeentestedforGFSK,π/4-DQPSK,8DPSK modulationmode. ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page7of78 4.GeneraInformation 4.1.Testenvironmentandmode OperatingEnvironment: Temperature: 25.0C Humidity:56%RH AtmosphericPressure:1010mbar TestMode: Engineeringmode:KeeptheEUTincontinuoustransmitting byselectchannelandmodulationswith Fully-chargedbattery Thesamplewasplaced0.8m&1.5mforthemeasurementbelow&above1GHz abovethegroundplaneof3mchamber.Measurementsinbothhorizontalandvertical polaritieswereperformed.Duringthetest,eachemissionwasmaximizedby:having theEUTcontinuouslyworking,investigat…

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ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page29of78 -20dBBandwidthNVNT3-DH52480MHzAnt1 ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page30of78 6.5.CarrierFrequenciesSeparation 6.5.1.TestSpecification TestRequirement:FCCPart15CSection15.247(a)(1) TestMethod:ANSIC63.10:2020 Limit: Frequencyhoppingsystemsoperatinginthe 2400-2483.5MHzbandmayhavehoppingchannel carrierfrequenciesthatareseparatedby25kHzor two-thirdsofthe20dBbandwidthofthehopping channel,whicheverisgreater. TestSetup: TestMode:Hoppingmode TestProcedure: 1.ThetestingfollowsANSIC63.10:2020Measurement Guidelines. 2.TheRFoutputofEUTwasconnectedtothespectrum analyzerbyRFcableandattenuator.Thepathlosswas compensatedtotheresultsforeachmeasurement. 3.SettothemaximumpowersettingandenabletheEUT transmitcontinuously. 4.EnabletheEUThoppingfunction. 5.Usethefollowingspectrumanalyzersettings: Span=wideenoughtocapturethepeaksoftwoadjacent channels;RBWissettoapproximately30%ofthechannel spacing,adjustasnecessarytobestidentifythecenterof eachindividualchannel;VBW≥RBW;Sweep=auto; Detectorfunction=peak;Trace=maxhold. 6.Usethemarker-deltafunctiontodeterminetheseparation betweenthepeaksoftheadjacentchannels.Recordthe valueinreport. TestResult:PASS ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page31of78 6.5.2.Testdata GFSKmode Testchannel CarrierFrequencies Separation(MHz) Limit(2/3*20dBBW MHz) Result Lowest1.0040.635PASS Middle0.9940.663PASS Highest0.990.688PASS Pi/4DQPSKmode Testchannel CarrierFrequencies Separation(MHz) Limit(2/3*20dBBW MHz) Result Lowest1.0020.849PASS Middle1.0040.905PASS Highest1.0020.884PASS 8DPSKmode Testchannel CarrierFrequencies Separation(MHz) Limit(2/3*20dBBW MHz) Result Lowest1.0020.869PASS Middle1.0020.863PASS Highest1.1560.873PASS Testplotsasfollows: ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page32of78 TestGraphs CFSNVNT1-DH52402MHzAnt1 CFSNVNT1-DH52441MHzAnt1 ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page33of78 CFSNVNT1-DH52480MHzAnt1 CFSNVNT2-DH52402MHzAnt1 ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page34of78 CFSNVNT2-DH52441MHzAnt1 CFSNVNT2-DH52480MHzAnt1 ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page35of78 CFSNVNT3-DH52402MHzAnt1 CFSNVNT3-DH52441MHzAnt1 ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page36of78 CFSNVNT3-DH52480MHzAnt1 ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page37of78 6.6.HoppingChannelNumber 6.6.1.TestSpecification TestRequirement:FCCPart15CSection15.247(a)(1) TestMethod:ANSIC63.10:2020 Limit: Frequencyhoppingsystemsinthe2400-2483.5MHz bandshalluseatleast15channels. TestSetup: TestMode:Hoppingmode TestProcedure: 1.ThetestingfollowsANSIC63.10:2020Measurement Guidelines. 2.TheRFoutputofEUTwasconnectedtothe spectrumanalyzerbyRFcableandattenuator.The pathlosswascompensatedtotheresultsforeach measurement. 3.Settothemaximumpowersettingandenablethe EUTtransmitcontinuously. 4.EnabletheEUThoppingfunction. 5.Usethefollowingspectrumanalyzersettings:Span= thefrequencybandofoperation;settheRBWtoless than30%ofthechannelspacingorthe20dB bandwidth,whicheverissmaller;VBW≥RBW;Sweep =auto;Detectorfunction=peak;Trace=maxhold. 6.Thenumberofhoppingfrequencyusedisdefinedas thenumberoftotalchannel. 7.Recordthemeasurementdatainreport. TestResult:PASS ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page38of78 6.6.2.Testdata Mode Hoppingchannel numbers LimitResult GFSK,P/4-DQPSK,8DPSK7915PASS ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page39of78 Testplotsasfollows: TestGraphs HoppingNo.NVNT1-DH52402MHzAnt1 HoppingNo.NVNT2-DH52402MHzAnt1 ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page40of78 HoppingNo.NVNT3-DH52402MHzAnt1 ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page41of78 6.7.DwellTime 6.7.1.TestSpecification TestRequirement:FCCPart15CSection15.247(a)(1) TestMethod:ANSIC63.10:2020 Limit: Theaveragetimeofoccupancyonanychannelshallnot begreaterthan0.4secondswithinaperiodof0.4 secondsmultipliedbythenumberofhoppingchannels employed. TestSetup: TestMode:Hoppingmode TestProcedure: 1.ThetestingfollowsANSIC63.10:2020Measurement Guidelines. 2.TheRFoutputofEUTwasconnectedtothe spectrumanalyzerbyRFcableandattenuator.The pathlosswascompensatedtotheresultsforeach measurement. 3.Settothemaximumpowersettingandenablethe EUTtransmitcontinuously. 4.EnabletheEUThoppingfunction. 5.Usethefollowingspectrumanalyzersettings:Span= zerospan,centeredonahoppingchannel;RBW shallbe≤channelspacingandwherepossible RBWshouldbeset>>1/T,whereTistheexpected dwelltimeperchannel;VBW≥RBW;Sweep=as necessarytocapturetheentiredwelltimeper hoppingchannel;Detectorfunction=peak;Trace= maxhold. 6.Measureandrecordtheresultsinthetestreport. TestResult:PASS ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page42of78 6.7.2.TestData ModeFrequency (MHz) PulseTime (ms) TotalDwellTime (ms) Burst Count PeriodTime (ms) Limit (ms) Verdict 1-DH124020.13420.50215331600400Pass 1-DH124410.13420.23415131600400Pass 1-DH124800.382121.47631831600400Pass 1-DH324020.13321.01415831600400Pass 1-DH324410.13421.03815731600400Pass 1-DH324801.64268.9616431600400Pass 1-DH524020.13421.57416131600400Pass 1-DH524410.13420.7715531600400Pass 1-DH524802.887317.5711031600400Pass Note:1.Innormalmode,hoppingrateis1600hops/swith6slotsin79hoppingchannels. ForDH1,Withchannelhoppingrate(1600/2/79)inOccupancyTimeLimit(0.4x79)(s),HopsOver OccupancyTimecomesto(1600/2/79)x(0.4x79)=320hops ForDH3,Withchannelhoppingrate(1600/4/79)inOccupancyTimeLimit(0.4x79)(s),HopsOver OccupancyTimecomesto(1600/4/79)x(0.4x79)=160hops ForDH5,Withchannelhoppingrate(1600/6/79)inOccupancyTimeLimit(0.4x79)(s),HopsOver OccupancyTimecomesto(1600/6/79)x(0.4x79)=106.67hops 2.DwellTime(s)=HopsOverOccupancyTime(hops)xPackageTransferTime Testplotsasfollows: ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page43of78 TestGraphs DwellNVNT1-DH12402MHzAnt1OneBurst DwellNVNT1-DH12402MHzAnt1Accumulated ReportNo.:WSCT-ANAB-R&E2601…

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ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page49of78 DwellNVNT1-DH52402MHzAnt1OneBurst DwellNVNT1-DH52402MHzAnt1Accumulated ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page50of78 DwellNVNT1-DH52441MHzAnt1OneBurst DwellNVNT1-DH52441MHzAnt1Accumulated ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page51of78 DwellNVNT1-DH52480MHzAnt1OneBurst DwellNVNT1-DH52480MHzAnt1Accumulated ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page52of78 6.8.PseudorandomFrequencyHoppingSequence TestRequirement:FCCPart15CSection15.247(a)(1)requirement: Frequencyhoppingsystemsshallhavehoppingchannelcarrierfrequenciesseparated byaminimumof25kHzorthe20dBbandwidthofthehoppingchannel,whicheveris greater. Alternatively.Frequencyhoppingsystemsoperatinginthe2400-2483.5MHzband mayhavehoppingchannelcarrierfrequenciesthatareseparatedby25kHzor two-thirdsofthe20dBbandwidthofthehoppingchannel,whicheverisgreater, providedthesystemsoperatewithanoutputpowernogreaterthan125mW.The systemshallhoptochannelfrequenciesthatareselectedatthesystemhoppingrate fromaPseudorandomorderedlistofhoppingfrequencies.Eachfrequencymustbe usedequallyontheaveragebyeachtransmitter.Thesystemreceiversshallhave inputbandwidthsthatmatchthehoppingchannelbandwidthsoftheircorresponding transmittersandshallshiftfrequenciesinsynchronizationwiththetransmittedsignals. EUTPseudorandomFrequencyHoppingSequence Thepseudorandomsequencemaybegeneratedinanine-stageshiftregisterwhose 5thand9thstageoutputsareaddedinamodulo-twoadditionstage.Andtheresultis fedbacktotheinputofthefirststage.Thesequencebeginswiththefirstoneof9 consecutiveones;i.e.theshiftregisterisinitializedwithnineones. •Numberofshiftregisterstages:9 •Lengthofpseudo-randomsequence:2 9 -1=511bits •Longestsequenceofzeros:8(non-invertedsignal) AnexampleofPseudorandomFrequencyHoppingSequenceasfollow: Eachfrequencyusedequallyontheaveragebyeachtransmitter. Thesystemreceivershaveinputbandwidthsthatmatchthehoppingchannel bandwidthsoftheircorrespondingtransmittersandshiftfrequenciesin synchronizationwiththetransmittedsignals. ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page53of78 6.9.ConductedBandEdgeMeasurement 6.9.1.TestSpecification TestRequirement:FCCPart15CSection15.247(d) TestMethod:ANSIC63.10:2020 Limit: Inany100kHzbandwidthoutsidetheintentional radiationfrequencyband,theradiofrequencypower shallbeatleast20dBbelowthehighestlevelofthe radiatedpower.Inaddition,radiatedemissionswhichfall intherestrictedbandsmustalsocomplywiththe radiatedemissionlimits. TestSetup: TestMode:Transmittingmodewithmodulation TestProcedure: 1.ThetestingfollowstheguidelinesinBand-edge ComplianceofRFConductedEmissionsofANSI C63.10:2020MeasurementGuidelines. 2.Settothemaximumpowersettingandenablethe EUTtransmitcontinuously. 3.SetRBW=100kHz(≥1%span=10MHz),VBW=300 kHz(≥RBW).Bandedgeemissionsmustbeatleast 20dBdownfromthehighestemissionlevelwithin theauthorizedbandasmeasuredwitha100kHz RBW.Theattenuationshallbe30dBinsteadof20 dBwhenRMSconductedoutputpowerprocedureis used. 4.EnablehoppingfunctionoftheEUTandthenrepeat step2and3. 5.Measureandrecordtheresultsinthetestreport. TestResult:PASS ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page54of78 TestData GFSKModulation（theworstcase） TestGraphs BandEdge(Hopping)NVNT1-DH52402MHzAnt1HoppingRef BandEdge(Hopping)NVNT1-DH52402MHzAnt1HoppingEmission ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page55of78 BandEdge(Hopping)NVNT1-DH52480MHzAnt1HoppingRef BandEdge(Hopping)NVNT1-DH52480MHzAnt1HoppingEmission ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page56of78 6.10.ConductedSpuriousEmissionMeasurement 6.10.1.TestSpecification TestRequirement:FCCPart15CSection15.247(d) TestMethod:ANSIC63.10:2020 Limit: Inany100kHzbandwidthoutsidetheintentional radiationfrequencyband,theradiofrequencypower shallbeatleast20dBbelowthehighestlevelofthe radiatedpower.Inaddition,radiatedemissionswhichfall intherestrictedbandsmustalsocomplywiththe radiatedemissionlimits. TestSetup: TestMode:Transmittingmodewithmodulation TestProcedure: 1.ThetestingfollowstheguidelinesinSpuriousRF ConductedEmissionsofANSIC63.10:2020 MeasurementGuidelines 2.TheRFoutputofEUTwasconnectedtothe spectrumanalyzerbyRFcableandattenuator.The pathlosswascompensatedtotheresultsforeach measurement. 3.Settothemaximumpowersettingandenablethe EUTtransmitcontinuously. 4.SetRBW=100kHz,VBW=300kHz,scanup through10thharmonic.Allharmonics/spursmustbe atleast20dBdownfromthehighestemissionlevel withintheauthorizedbandasmeasuredwitha100 kHzRBW. 5.Measureandrecordtheresultsinthetestreport. 6.TheRFfundamentalfrequencyshouldbeexcluded againstthelimitlineintheoperatingfrequencyband. TestResult:PASS ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page57of78 TestData TestGraphs Tx.SpuriousNVNT1-DH52402MHzAnt1Ref Tx.SpuriousNVNT1-DH52402MHzAnt1Emission ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page58of78 Tx.SpuriousNVNT1-DH52441MHzAnt1Ref Tx.SpuriousNVNT1-DH52441MHzAnt1Emission ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page59of78 Tx.SpuriousNVNT1-DH52480MHzAnt1Ref Tx.SpuriousNVNT1-DH52480MHzAnt1Emission ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page60of78 Tx.SpuriousNVNT2-DH52402MHzAnt1Ref Tx.SpuriousNVNT2-DH52402MHzAnt1Emission ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page61of78 Tx.SpuriousNVNT2-DH52441MHzAnt1Ref Tx.SpuriousNVNT2-DH52441MHzAnt1Emission ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page62of78 Tx.SpuriousNVNT2-DH52480MHzAnt1Ref Tx.SpuriousNVNT2-DH52480MHzAnt1Emission ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page63of78 Tx.SpuriousNVNT3-DH52402MHzAnt1Ref Tx.SpuriousNVNT3-DH52402MHzAnt1Emission ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page64of78 Tx.SpuriousNVNT3-DH52441MHzAnt1Ref Tx.SpuriousNVNT3-DH52441MHzAnt1Emission ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page65of78 Tx.SpuriousNVNT3-DH52480MHzAnt1Ref Tx.Spu…

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ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page68of78 measurementantennaelevationshallbethatwhich maximizestheemissions.Themeasurement antennaelevationformaximumemissionsshallbe restrictedtoarangeofheightsoffrom1mto4m abovethegroundorreferencegroundplane. 3.Settothemaximumpowersettingandenablethe EUTtransmitcontinuously. 4.Usethefollowingspectrumanalyzersettings: (1)Spanshallwideenoughtofullycapturethe emissionbeingmeasured; (2)SetRBW=100kHzforf<1GHz,RBW=1MHz forf>1GHz;VBW≥RBW; Sweep=auto;Detectorfunction=peak;Trace =maxholdforpeak (3)Foraveragemeasurement:usedutycycle correctionfactormethodper 15.35(c).Dutycycle=Ontime/100milliseconds Ontime=N1*L1+N2*L2+...+Nn-1*LNn-1+Nn*Ln WhereN1isnumberoftype1pulses,L1is lengthoftype1pulses,etc. AverageEmissionLevel=PeakEmission Level+20*log(Dutycycle) CorrectedReading:AntennaFactor+Cable Loss+ReadLevel-PreampFactor=Level Testresults: PASS Note1:Thesymbolof“--”inthetablewhichmeansnotapplication. Note2: Forthetestdataabove1GHz，AccordingtheANSIC63.10-2013,wherelimitsarespecifiedforbothaverage andpeak(orquasi-peak)detectorfunctions,ifthepeak(orquasi-peak)measuredvaluecomplieswiththe averagelimit,itisunnecessarytoperformanaveragemeasurement. Note3:Thelowfrequency,whichstartedfrom9kHzto30MHz,waspre-scannedandtheresultwhichwas20dB lowerthanthelimitlineper15.31(o)wasnotreported. Note4:TheEUTisworkingintheNormallinkmodebelow1GHz.Allmodeshavebeentestedandnormallinkmode isworst. ReportNo.:WSCT-ANAB-R&E260100007A-BTIssuedDate:12March2026 Page69of78 6.11.2.TestData Pleaserefertofollowingdiagramforindividual Below1GHz Horizontal: Rep…

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