2ADYY-OW02TWS Earphone

(TECNOMOBILELIMITED) (September23,2025) EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(i)requestfor(FCCID:2ADYY-OW02#) [TECNOMOBILELIMITED](“theapplicant”)certifiesthattheequipmentforwhich authorizationissoughtisnot“covered”equipmentprohibitedfromreceivingan equipmentauthorizationpursuanttosection2.903oftheFCCrules. Wealsocertifythat,asofthedateofthefilingoftheapplication,theequipmentdoes notutilizecyber-securityoranti-virussoftwarefromKasperskyLab,Inc,oranyofits successorsandassignees,whichisalsoonthe“coveredlist”. Sincerely, Yiting,Luo/CertifiedEngineer (TECNOMOBILELIMITED) (September23,2025) EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(ii)requestfor(FCCID:2ADYY-OW02#) [TECNOMOBILELIMITED](“theapplicant”)certifiesthat,asofthedateofthefilingof theapplication,theapplicantisnotidentifiedontheCoveredListasanentityproducing “covered”equipment. Sincerely, Yiting,Luo/CertifiedEngineer

TECNOMOBILELIMITED AgentAuthorizationLetter (September23,2025) EurofinsMETLabs 914WestPatapscoAvenue Baltimore,MD21230 RE:LETTEROFAGENTAUTHORIZATION ToWhomItMayConcern: We,theundersigned,herebyauthorize (WORLDSTANDARDIZATIONCERTIFICATION& TESTINGGROUP(SHENZHEN)CO.,LTD.)toactonourbehalfinallmattersrelatingto applicationforequipmentauthorization,includingthesigningofalldocuments relatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderis subjecttothedenialofbenefits,includingFCCbenefits,pursuanttoSection5301 oftheAnti-DrugAbuseActof1988,21U.S.C.853(a). Thisagreementexpiresoneyearfromthecurrentdate. Sincerely, Yiting,Luo/CertifiedEngineer

TECNOMOBILELIMITED LongTermConfidentialityRequestLetter (September23,2025) EurofinsMETLabs 914WestPatapscoAvenue Baltimore,MD21230 RE:CONFIDENTIALITYREQUESTFOR(TWSEarphone/OW02#2ADYY-OW02#) ToWhomItMayConcern: Thisletterservesasanofficialrequestforconfidentialityundersections0.457and0.459of CFR47.Wehaverequestedthatthe -BlockDiagram -Schematics -OperationalDescription requiredtobesubmittedwiththisapplicationbepermanentlywithheldfrompublicreview. Theabove-mentioneddocumentsbelongtointernaldocuments,isourproprietaryinformation,that couldnevergetintothepossessionofourcompetition. Pleasecontactmeifthereisanyinformationyoumayneed. Sincerely, Client’sname/title:Yiting,Luo/CertifiedEngineer CompanyName:TECNOMOBILELIMITED Contactinformation/address:[email protected]/FLATN16/FBLOCKBUNIVERSAL INDUSTRIALCENTRE19-25SHANMEISTREETFOTANNTHONGKONG

TECNOMOBILELIMITED ShortTermConfidentialityRequestLetter (September23,2025) METLaboratories,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:ShortTermConfidentialityRequestFor(TWSEarphone/OW02#2ADYY-OW02#) ToWhomItMayConcern: Inaccordancewithsections0.457and0.459ofCFR47,<TECNOMOBILELIMITED.>. requestsshort-termConfidentialityoffollowingsectionsofthisapplicationforaperiodof180 daysaftergrantisissued. Testsetupphotos Externalphotos Internalphotos User’smanual Thesedocumentscontaindetailedsystemandequipmentdescriptionsandrelated informationabouttheproduct,which<TECNOMOBILELIMITED.>considerstobe proprietary,confidential,andacustomdesignandotherwise,wouldnotreleasetothe generalpublic.Sincethisdesignisabasisfromwhichfuturetechnologicalproductswill evolve,<TECNOMOBILELIMITED.>feelsthatthisinformationwouldbeofbenefittoits competitors,andthatthedisclosureoftheinformationinthesedocumentswouldgiveour competitorsanunfairadvantageinthemarket. Pleasecontactmeifthereisanyinformationyoumayneed. Sincerely, Name:Yiting,Luo Function:CertifiedEngineer Signature:

转曲 I n p u t : 5 . 0 V 1 A O u t p u t : 5 . 0 V 0 . 2 5 A S N : X X X X X X X X X X F C C I D : 2 A D Y Y - O W 0 2 M o d e l : O W 0 2 T E C N O M o b i l e L i m i t e d C a p a c i t y : 6 0 0 m A h 3 . 7 V 2 . 2 2 W h M a d e i n C h i n a 11.76mm13.22mm14.95mm11.76mm 10mm 2.04mm 2.06mm 9.83mm 2.17mm 2.16mm 5.77mm5.7mm8mm

Page 1 of 7 FCC RF Exposure Report For TECNO MOBILE LIMITED FLAT N 16/F BLOCK B UNIVERSAL INDUSTRIAL CENTRE 19-25 SHAN MEI STREET FOTAN NT HONGKONG Model : OW02 Report Number: WSCT-ANAB-R&E250700061A Report Date: 15 September 2025 FCC ID: 2ADYY-OW02 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 Report No.: WSCT-ANAB-R&E250700061A SAR Evaluation Report Page 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&E250700061A SAR Evaluation Report Page 3 of 7 Modified History REV. Modification Description Issued Date Remark REV.1.0 Initial Test Report Relesse 15 September 2025 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. Report No.: WSCT-ANAB-R&E250700061A SAR Evaluation Report Page 4 of 7 1.2 EUT Information Device Information： Product Type: True Wireless Earbuds Model: OW02 Trade Name: TECNO Device Type: Portable device Exposure Category: uncontrolled environment / general population Production Unit or Identical Prototype： Production Unit Antenna Type : Integral Antenna Device Operating Configurations: Modulation: GFSK, π/4-DQPSK, 8-DPSK Channel Separation: BT:1MHz BLE:1MHz Operation Frequency: 2402MHz~2480MHz Antenna Gain: -2.74dBi Power Source: Charge box Battery: Rechargeable Li-ion Polymer Battery Model: 802040 3.7V 600mAh 2.22Wh Earphone Battery: Li-ion Battery : CH1154AA 3.85V 60mAh 0.231Wh Note: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. Report No.: WSCT-ANAB-R&E250700061A SAR Evaluation Report Page 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: TECNO MOBILE LIMITED Applicant Address: FLAT N 16/F BLOCK B UNIVERSAL INDUSTRIAL CENTRE 19-25 SHAN MEI STREET FOTAN NT HONGKONG Manufacturer Name: TECNO MOBILE 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&E250700061A SAR Evaluation Report Page 6 of 7 6 Test result I.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 …

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ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 1 SPECIFICATIONFORAPPROVAL customerName LianchuangHongsheng Customer project Name OW02-pro Heyixunproject Name OW02-pro customer P/N Heyixun P/N HYX0089-OW02-pro-V2 Band 2400-2500MHz version A0 DesignerInformation RFEngineer FengXiaoheng EEEngineer ShiZhenhao MEEngineer ZhuZengyuan HeyixunApprovalcustomerApproval prepared checkedBYApprovalBYcheckedBYApprovalBY signature ZhuZengyuan Date 2025-07-03 changeLog version changeDescriptionpersonincharge ApprovalBY Date ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 2 catalogue No. Item PageNo. 1 DrawingorProductImage 3 2 DimensionsTestReport 4 3 RFPerformanceTestReport 5-13 4 ReliabilityTestReport 14 5 PACKINGCRITERION 15 6 Environmentalrequirements 16 7 InstallWizardorOther 16 ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 3 DrawingorProductImage ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 4 sampleDimensionsTestReport customerName Lianchuang Hongsheng customerP/N HeyixunP/N HYX0089-OW02- pro-V2 TestDate 2025-07-03 sampleQty. 3 Inspector ZhuZengyuan DimensionNO.standardsample1sample2sample3pass/NG ①length 32.00±0.2mm32.00mm32.05mm32.02mm ②width 2.80±0.2mm2.82mm2.80mm2.82mm ③thickness 0.15±0.05mm0.15mm0.17mm0.15mm Conclusion PASS Inspector&Date ZhuZengyuan2025-07-03 Approval&Date ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 5 RFPerformanceTestReport customerName Lianchuang Hongsheng project Name OW02-pro HeyixunP/N HYX0089-OW02- pro-V2 Band 2400-2500MHZ TestDate 2025-07-03 Inspector ZhuZengyuan AntennaTestEquipmentIntroduction TestofantennainputcharacteristicsusingAgilentE5071candAgilent5071cvectornetworkanalyzer; TheradiationpatternoftheantennaaretestedusingtheETSstarlab3DnearfieldAnechoicChamber, andtheinstrumentisusedtoagilent8960E5515andAgilentE4438C.Thetestcoordinatesofthedarkroom areasfollows: ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 6 SequenceNumberTestItemequipment SparameterVSWRAgilent5071C&Agilent5062A OTATestTRP&TISAgilent 8960E5515C&Agilent4438C&CMW500ETS&SATIMO Gain&EfficiencyGain&Efficiency ETS&SATIMO Agilent5071C ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 7 ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 8 ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 9 ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 10 ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 11 ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 12 ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 13 ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 14 ReliabilityTestReport customer Name Lianchuang Hongsheng customer P/N Heyixun P/N HYX0089-OW02-pro-V2 TestDate 2025-07-03 sample Qty. 3 Inspector ZhuZengyuan TestItem Requireme testing equipment sample1 sample2sample3 PASS/NG High temperature storage Thetestwasperformed after24hoursof exposureat+85°Cand 2hoursofrecovery Constant temperature andhumidity chamber OKOKOK Pass Cryogenic storage Thetestwasperformed after24hoursof exposureat-40°Cand 2hoursofrecovery Constant temperature andhumidity chamber OKOKOK Pass High temperature operation Operatesat+60°C for24hours Constant temperature andhumidity chamber OKOKOK Pass Operatesat low temperatures Itworksonpowerfor 24Hat-20°C Constant temperature andhumidity chamber OKOKOK Pass Saltspray test (5Shi0.5)*Sodiumchloride, pHvalueis6.5~7.2,andthe temperatureofthe experimentalchamberis(35 ±2)°C ☑24H□48H Saltspray testing machine OKOKOK Pass Connector riveting pull-out force 1.13Wiresize≥10N 0.81Wiresize≥8N RG174≥60N RG178≥50N Push-pull forcegauge //// Conclusion Pass Inspector& Date ZhuZengyuan2025-07-03 Approval&D ate ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 15 PACKINGCRITERION 1、 Individualproducts(Subjecttotheactualpackaging) 2、BigPEbagpacking(fullsheet/single90pcs)(Subjecttothe actualpackaging) 3、Sealed,theouterboxisaffixedwithourproductionlabelandROHSlabel. (Subjecttotheactualpackaging) ShenzhenHeyixunTechnologyCo.,LTD address：1903-1905,Building2,JiufangSquare,TiezaiRoad,GongleCommunity,XixiangStreet,Bao'an District,Shenzhen 16 Environmentalrequirements MSDS(MaterialSafetyData Sheet) offerNotavailableN/A COC(Environmental ProtectionAgreement) offerNotavailableN/A Technicalstandardsfor environmentallyfriendly hazardoussubstances offerNotavailableN/A Specificenvironmental requirements ROHS2.0COMPLIANTROHS2.0COMPLIANT Halogen-free MeetsCalifornia65 InstallWizardorOther InstallationProcess: Takethe1PCSproduct,tearoffthereleasepaperonthebackoftheFPCbyhand,andthen alignthepositionoftheFPCpositioningholewiththepositioningholepositionoftheshell (positioningriborpositioningline),andattachittotheshellflatly,thespecificposition isshowninthefollowingfigu…

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丰ESTRE'.F0RT FCC ID: 2ADYY-OW02 Product: TWS Earbuds M。del N。.： OW02 Trade Mark: TECNO Rep。rt N。.： WSCT-ANAB-R&E250700061A-BT Issued Date: 18 August 2025 Issued for: TECNO MOBILE LIMITED 沁也比 �主＝豆�� 亏予友去寻 '1 ，／，（己队Y FLAT N 16/F BLOCK B UNIVERSAL INDUSTRIAL CENTRE 19-25 SHAN MEI STREET FOTAN NT HONGKONG Issued By: Note: This report shall not be reproduced except in full, without the written approval of World Standardization Certification& Testing Group (Shenzhen) Co., Ltd. This document may be altered or revised by World Standardization Certification& Testing Group (Shenzhen) Co., Ltd. personnel only, and shall be noted in the revision section of the document. The test results in the repo忱。nlyapply to the tested sample. AOO B叶ldlngA-B,Ba。ll'an l，、dustr1ai Park,No.58 and 60,Ta吨IOU阳enue, Shiyaij_ Street, Bao'an Ooatrlct, Shonzh酬CityGuongdong Provi nce, China TEL 0016-755-26抽61922回960目269崎144 FAX: 0086 755-8637回05, E-mail·阳吨bl咱州ng＠明时曲同.com 附tp:www.嗣ct cer1 r.om I World Standard！ 四”once同lflc副Ion&Te1tlng G roup( Shonihon) Co ,Ltd Page 1 of 77 Report No.: WSCT-ANAB-R&E250700061A-BT Issued: 15 September 2025 Revised: None Page 2 of 72 TABLE OF CONTENTS 1. Test Certification ..................................................................................... 3 2. Test Result Summary .............................................................................. 4 3. EUT Description ....................................................................................... 5 4. Genera Information .................................................................................. 7 4.1. TEST ENVIRONMENT AND MODE .............................................................................................................. 7 4.2. DESCRIPTION OF SUPPORT UNITS .......................................................................................................... 7 5. Facilities and Accreditations .................................................................. 8 5.1. FACILITIES ............................................................................................................................................ 8 5.2. ACCREDITATIONS ............................................................................................................................ 8 5.3. MEASUREMENT UNCERTAINTY ............................................................................................................... 9 5.4. MEASUREMENT INSTRUMENTS ................................................................................................... 10 6. Test Results and Measurement Data ................................................... 11 6.1. ANTENNA REQUIREMENT ...................................................................................................................... 11 6.2. CONDUCTED EMISSION ........................................................................................................................ 12 6.3. CONDUCTED OUTPUT POWER .............................................................................................................. 14 6.4. 20DB OCCUPY BANDWIDTH ................................................................................................................. 16 6.5. CARRIER FREQUENCIES SEPARATION .................................................................................................. 23 6.6. HOPPING CHANNEL NUMBER ............................................................................................................... 30 6.7. DWELL TIME ........................................................................................................................................ 34 6.8. PSEUDORANDOM FREQUENCY HOPPING SEQUENCE ............................................................................. 36 6.9. CONDUCTED BAND EDGE MEASUREMENT ............................................................................................ 46 6.10. CONDUCTED SPURIOUS EMISSION MEASUREMENT................................................................................ 51 6.11. RADIATED SPURIOUS EMISSION MEASUREMENT ................................................................................... 61 Report No.: WSCT-ANAB-R&E250700061A-BT Issued: 15 September 2025 Revised: None Page 4 of 72 2. Test Result Summary Requirement CFR 47 Section Result Antenna Requirement §15.203/§15.247 (c) PASS AC Power Line Conducted Emission §15.207 NA Conducted Peak Output Power §15.247 (b)(1) §2.1046 PASS 20dB Occupied Bandwidth §15.247 (a)(1) §2.1049 PASS Carrier Frequencies Separation §15.247 (a)(1) PASS Hopping Channel Number §15.247 (a)(1) PASS Dwell Time §15.247 (a)(1) PASS Radiated Emission §15.205/§15.209 §2.1053, §2.1057 PASS Band Edge §15.247(d) §2.1051, §2.1057 PASS Note: 1. PASS: Test item meets the requirement. 2. Fail: Test item does not meet the requirement. 3. N/A: Test case does not apply to the test object. 4. The test result judgment is decided by the limit of test standard. Report No.: WSCT-ANAB-R&E250700061A-BT Issued: 15 September 2025 Revised: None Page 5 of 72 3. EUT Description Product Name: TWS Earphone Model : OW02 Trade Mark: TECNO Operation Frequency: 2402MHz~2480MHz Channel Separation: 1MHz Number of Channel: 79 Modulation Type: GFSK, π/4-DQPSK, 8-DPSK Modulation Technology: FHSS Antenna Type: Integral Antenna Antenna Gain: -2.74dBi Operating Voltage Charge box Battery: Rechargeable Li-ion Polymer Battery Model: 802040 3.7V 600mAh 2.22Wh Earphone Battery: Li-ion Battery : CH1154AA 3.85V 60mAh 0.231Wh Remark: N/A. Report No.: WSCT-ANAB-R&E250700061A-BT Issued: 15 September 2025 Revised: None Page 6 of 72 Operation Frequency each of channel for GFSK, π/4-DQPSK, 8DPSK Channel Frequency Channel Frequency Channel Frequency Channel Frequency 0 2402MHz 20 2422MHz 40 2442MHz 60 2462MHz 1 2403MHz 21 2423MHz 41 2443MHz 61 2463MHz ... ... ... ... ... ... ... ... 10 2412MHz 30 2432MHz 50 2452MHz 70 2472MHz 11 2413MHz 31 2433MHz 51 2453MHz 71 2473MHz ... ... ... ... ... ... …

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Report No.: WSCT-ANAB-R&E250700061A-BT Issued: 15 September 2025 Revised: None Page 44 of 72 Dwell 1-DH5 2480MHz One Burst Dwell 1-DH5 2480MHz Accumulated Report No.: WSCT-ANAB-R&E250700061A-BT Issued: 15 September 2025 Revised: None Page 45 of 72 6.8. Pseudorandom Frequency Hopping Sequence Test Requirement: FCC Part15 C Section 15.247 (a)(1) requirement: Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hopping channel, whichever is greater. Alternatively. Frequency hopping systems operating in the 2400-2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 125 mW. The system shall hop to channel frequencies that are selected at the system hopping rate from a Pseudorandom ordered list of hopping frequencies. Each frequency must be used equally on the average by each transmitter. The system receivers shall have input bandwidths that match the hopping channel bandwidths of their corresponding transmitters and shall shift frequencies in synchronization with the transmitted signals. EUT Pseudorandom Frequency Hopping Sequence The pseudorandom sequence may be generated in a nine-stage shift register whose 5th and 9th stage outputs are added in a modulo-two addition stage. And the result is fed back to the input of the first stage. The sequence begins with the first one of 9 consecutive ones; i.e. the shift register is initialized with nine ones. • Number of shift register stages: 9 • Length of pseudo-random sequence: 2 9 -1 = 511 bits • Longest sequence of zeros: 8 (non-inverted signal) An example of Pseudorandom Frequency Hopping Sequence as follow: Each frequency used equally on the average by each transmitter. The system receivers have input bandwidths that match the hopping channel bandwidths of their corresponding transmitters and shift frequencies in synchronization with the transmitted signals. Report No.: WSCT-ANAB-R&E250700061A-BT Issued: 15 September 2025 Revised: None Page 46 of 72 6.9. Conducted Band Edge Measurement 6.9.1. Test Specification Test Requirement: FCC Part15 C Section 15.247 (d) Test Method: ANSI C63.10:2020 Limit: In any 100 kHz bandwidth outside the intentional radiation frequency band, the radio frequency power shall be at least 20 dB below the highest level of the radiated power. In addition, radiated emissions which fall in the restricted bands must also comply with the radiated emission limits. Test Setup: Test Mode: Transmitting mode with modulation Test Procedure: 1. The testing follows the guidelines in Band-edge Compliance of RF Conducted Emissions of ANSI C63.10:2020 Measurement Guidelines. 2. Set to the maximum power setting and enable the EUT transmit continuously. 3. Set RBW = 100 kHz (≥1% span=10MHz), VBW = 300 kHz (≥RBW). Band edge emissions must be at least 20 dB down from the highest emission level within the authorized band as measured with a 100kHz RBW. The attenuation shall be 30 dB instead of 20 dB when RMS conducted output power procedure is used. 4. Enable hopping function of the EUT and then repeat step 2 and 3. 5. Measure and record the results in the test report. Test Result: PASS Report No.: WSCT-ANAB-R&E250700061A-BT Issued: 15 September 2025 Revised: None Page 47 of 72 6.9.2. Test Data GFSK Modulation（the worst case） Test Graphs Band Edge 1-DH5 2402MHz No-Hopping Ref Band Edge 1-DH5 2402MHz No-Hopping Emission Report No.: WSCT-ANAB-R&E250700061A-BT Issued: 15 September 2025 Revised: None Page 48 of 72 Band Edge 1-DH5 2480MHz No-Hopping Ref Band Edge 1-DH5 2480MHz No-Hopping Emission Test Graphs Band Edge(Hopping) 1-DH5 2402MHz Hopping Ref Report No.: WSCT-ANAB-R&E250700061A-BT Issued: 15 September 2025 Revised: None Page 49 of 72 Band Edge(Hopping) 1-DH5 2402MHz Hopping Emission Report No.: WSCT-ANAB-R&E250700061A-BT Issued: 15 September 2025 Revised: None Page 50 of 72 Band Edge(Hopping) 1-DH5 2480MHz Hopping Ref Band Edge(Hopping) 1-DH5 2480MHz Hopping Emission Report No.: WSCT-ANAB-R&E250700061A-BT Issued: 15 September 2025 Revised: None Page 51 of 72 6.10. Conducted Spurious Emission Measurement 6.10.1. Test Specification Test Requirement: FCC Part15 C Section 15.247 (d) Test Method: ANSI C63.10:2020 Limit: In any 100 kHz bandwidth outside the intentional radiation frequency band, the radio frequency power shall be at least 20 dB below the highest level of the radiated power. In addition, radiated emissions which fall in the restricted bands must also comply with the radiated emission limits. Test Setup: Test Mode: Transmitting mode with modulation Test Procedure: 1. The testing follows the guidelines in Spurious RF Conducted Emissions of ANSI C63.10:2020 Measurement Guidelines 2. The RF output of EUT was connected to the spectrum analyzer by RF cable and attenuator. The path loss was compensated to the results for each measurement. 3. Set to the maximum power setting and enable the EUT transmit continuously. 4. Set RBW = 100 kHz, VBW = 300kHz, scan up through 10th harmonic. All harmonics / spurs must be at least 20 dB down from the highest emission level within the authorized band as measured with a 100 kHz RBW. 5. Measure and record the results in the test report. 6. The RF fundamental frequency should be excluded against the limit line in the operating frequency band. Test Result: PASS Report No.: WSCT-ANAB-R&E250700061A-BT Issued: 15 September 2025 Revised: None Page 52 of 72 Test Data Test Graphs Tx. Spurious 1-DH5 2402MHz Ref Tx. Spurious 1-DH5 2402MHz Emission Report No.: WSCT-ANAB-R&E250700061A-BT Issued: 15 September 2025 Revised: None Page 53 of 72 Tx. Spurious 1-DH5 2441MHz Ref Tx. Spurious 1-DH5 2441MHz Emission Report No.: WSCT-ANAB-R&E250700061A-BT Issued: 15 September 2025 Revised: None Page 54 of 72 Tx. Spurious 1-DH5 2480MHz Ref Tx. Spurious 1-DH5 248…

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