2BRNE-AT-500Professional processor

InternalPhotos M/N:AT-500 InternalPhotos M/N:AT-500 InternalPhotos M/N:AT-500 InternalPhotos M/N:AT-500

ConductedTest RadiatedTest(Below1GHz) RadiatedTest(Above1GHz) RadioSpectrumTesting

Page 18 of 49 Report No. ESTE-R2509030 Appendix D: Time of occupancy Test Result TestMode Antenna Frequency[MHz] BurstWidth [ms] TotalHops [Num] Result[s] Limit[s] Verdict DH1 Ant1 Hop 0.367 318 0.117 ≤0.4 PASS DH3 Ant1 Hop 1.600 158 0.253 ≤0.4 PASS DH5 Ant1 Hop 2.850 106 0.302 ≤0.4 PASS 2DH1 Ant1 Hop 0.377 319 0.12 ≤0.4 PASS 2DH3 Ant1 Hop 1.610 159 0.256 ≤0.4 PASS 2DH5 Ant1 Hop 2.860 107 0.306 ≤0.4 PASS 3DH1 Ant1 Hop 0.375 320 0.12 ≤0.4 PASS 3DH3 Ant1 Hop 1.610 160 0.258 ≤0.4 PASS 3DH5 Ant1 Hop 2.870 108 0.31 ≤0.4 PASS Page 19 of 49 Report No. ESTE-R2509030 Test Graphs DH1-Ant1-Hop-PASS DH3-Ant1-Hop-PASS Page 20 of 49 Report No. ESTE-R2509030 DH5-Ant1-Hop-PASS Page 21 of 49 Report No. ESTE-R2509030 2DH1-Ant1-Hop-PASS Page 22 of 49 Report No. ESTE-R2509030 2DH3-Ant1-Hop-PASS Page 23 of 49 Report No. ESTE-R2509030 2DH5-Ant1-Hop-PASS Page 24 of 49 Report No. ESTE-R2509030 3DH1-Ant1-Hop-PASS Page 25 of 49 Report No. ESTE-R2509030 3DH3-Ant1-Hop-PASS Page 26 of 49 Report No. ESTE-R2509030 3DH5-Ant1-Hop-PASS Page 27 of 49 Report No. ESTE-R2509030 Page 28 of 49 Report No. ESTE-R2509030 Appendix E: Number of hopping channels Test Result TestMode Antenna Frequency[MHz] Result[Num] Limit[Num] Verdict DH5 Ant1 Hop 79 ≥15 PASS 2DH5 Ant1 Hop 79 ≥15 PASS 3DH5 Ant1 Hop 79 ≥15 PASS Page 29 of 49 Report No. ESTE-R2509030 Test Graphs DH5-Ant1-Hop-PASS 2DH5-Ant1-Hop-PASS 3DH5-Ant1-Hop-PASS Page 30 of 49 Report No. ESTE-R2509030 Page 31 of 49 Report No. ESTE-R2509030 Appendix F: Band edge measurements Test Result TestMode Antenna ChName Frequency[MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 Low 2402 2.41 -47.94 ≤-17.59 PASS DH5 Ant1 High 2480 1.39 -48.52 ≤-18.61 PASS DH5 Ant1 Low Hop_2402 7.29 -47.01 ≤-12.71 PASS DH5 Ant1 High Hop_2480 6.53 -48.57 ≤-13.47 PASS 2DH5 Ant1 Low 2402 3.07 -48.52 ≤-16.93 PASS 2DH5 Ant1 High 2480 2.02 -49.27 ≤-17.98 PASS 2DH5 Ant1 Low Hop_2402 -3.96 -47.21 ≤-23.96 PASS 2DH5 Ant1 High Hop_2480 -0.28 -48.15 ≤-20.28 PASS 3DH5 Ant1 Low 2402 4.62 -46.75 ≤-15.38 PASS 3DH5 Ant1 High 2480 4.31 -49.5 ≤-15.69 PASS 3DH5 Ant1 Low Hop_2402 -0.83 -48.36 ≤-20.83 PASS 3DH5 Ant1 High Hop_2480 2.75 -48.38 ≤-17.25 PASS Page 32 of 49 Report No. ESTE-R2509030 Test Graphs DH5-Ant1-2402-PASS DH5-Ant1-2480-PASS DH5-Ant1-Hop_2402-PASS Page 33 of 49 Report No. ESTE-R2509030 DH5-Ant1-Hop_2480-PASS 2DH5-Ant1-2402-PASS Page 34 of 49 Report No. ESTE-R2509030 2DH5-Ant1-2480-PASS 2DH5-Ant1-Hop_2402-PASS Page 35 of 49 Report No. ESTE-R2509030 2DH5-Ant1-Hop_2480-PASS 3DH5-Ant1-2402-PASS Page 36 of 49 Report No. ESTE-R2509030 3DH5-Ant1-2480-PASS 3DH5-Ant1-Hop_2402-PASS Page 37 of 49 Report No. ESTE-R2509030 3DH5-Ant1-Hop_2480-PASS Page 38 of 49 Report No. ESTE-R2509030 Appendix G: Conducted Spurious Emission Test Result TestMode Antenna Frequency[MHz] FreqRange [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 2402 30~26500 2.41 -42.45 ≤-17.59 PASS DH5 Ant1 2441 30~26500 2.06 -41.8 ≤-17.94 PASS DH5 Ant1 2480 30~26500 1.39 -41.83 ≤-18.61 PASS 2DH5 Ant1 2402 30~26500 3.07 -41.74 ≤-16.93 PASS 2DH5 Ant1 2441 30~26500 2.21 -41.75 ≤-17.79 PASS 2DH5 Ant1 2480 30~26500 2.02 -41.55 ≤-17.98 PASS 3DH5 Ant1 2402 30~26500 4.62 -41.85 ≤-15.38 PASS 3DH5 Ant1 2441 30~26500 5.39 -40.94 ≤-14.61 PASS 3DH5 Ant1 2480 30~26500 4.31 -42.02 ≤-15.69 PASS Page 39 of 49 Report No. ESTE-R2509030 Test Graphs DH5-Ant1-2402-30~26500-PASS DH5-Ant1-2441-30~26500-PASS DH5-Ant1-2480-30~26500-PASS Page 40 of 49 Report No. ESTE-R2509030 2DH5-Ant1-2402-30~26500-PASS 2DH5-Ant1-2441-30~26500-PASS Page 41 of 49 Report No. ESTE-R2509030 2DH5-Ant1-2480-30~26500-PASS 3DH5-Ant1-2402-30~26500-PASS Page 42 of 49 Report No. ESTE-R2509030 3DH5-Ant1-2441-30~26500-PASS 3DH5-Ant1-2480-30~26500-PASS Page 43 of 49 Report No. ESTE-R2509030 Page 44 of 49 Report No. ESTE-R2509030 Appendix H: Reference level measurement Test Result TestMode Antenna Freq(MHz) Max.Point[MHz] Result[dBm] DH5 Ant1 2402 2401.76 2.41 DH5 Ant1 2441 2440.92 2.06 DH5 Ant1 2480 2479.74 1.39 2DH5 Ant1 2402 2401.75 3.07 2DH5 Ant1 2441 2440.78 2.21 2DH5 Ant1 2480 2479.76 2.02 3DH5 Ant1 2402 2401.93 4.62 3DH5 Ant1 2441 2440.75 5.39 3DH5 Ant1 2480 2480.08 4.31 Page 45 of 49 Report No. ESTE-R2509030 Test Graphs DH5-Ant1-2402-PASS DH5-Ant1-2441-PASS DH5-Ant1-2480-PASS Page 46 of 49 Report No. ESTE-R2509030 2DH5-Ant1-2402-PASS 2DH5-Ant1-2441-PASS Page 47 of 49 Report No. ESTE-R2509030 2DH5-Ant1-2480-PASS 3DH5-Ant1-2402-PASS Page 48 of 49 Report No. ESTE-R2509030 3DH5-Ant1-2441-PASS 3DH5-Ant1-2480-PASS Page 49 of 49 Report No. ESTE-R2509030

Page 1 of 49 Report No. ESTE-R2509030 Appendix A: 20dB Emission Bandwidth Test Result TestMode Antenna Frequency[MHz] 20db EBW[MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.957 2401.451 2402.408 --- --- DH5 Ant1 2441 0.930 2440.463 2441.393 --- --- DH5 Ant1 2480 0.936 2479.460 2480.396 --- --- 2DH5 Ant1 2402 1.266 2401.292 2402.558 --- --- 2DH5 Ant1 2441 1.260 2440.295 2441.555 --- --- 2DH5 Ant1 2480 1.272 2479.286 2480.558 --- --- 3DH5 Ant1 2402 1.248 2401.283 2402.531 --- --- 3DH5 Ant1 2441 1.272 2440.286 2441.558 --- --- 3DH5 Ant1 2480 1.242 2479.283 2480.525 --- --- Page 2 of 49 Report No. ESTE-R2509030 Test Graphs DH5-Ant1-2402 DH5-Ant1-2441 DH5-Ant1-2480 Page 3 of 49 Report No. ESTE-R2509030 2DH5-Ant1-2402 2DH5-Ant1-2441 Page 4 of 49 Report No. ESTE-R2509030 2DH5-Ant1-2480 3DH5-Ant1-2402 Page 5 of 49 Report No. ESTE-R2509030 3DH5-Ant1-2441 3DH5-Ant1-2480 Page 6 of 49 Report No. ESTE-R2509030 Page 7 of 49 Report No. ESTE-R2509030 Appendix B: Maximum conducted output power Test Result Peak Test Mode Antenna Frequency[MHz] Conducted Peak Powert[dBm] Conducted Limit[dBm] Verdict DH5 Ant1 2402 2.92 ≤20.97 PASS DH5 Ant1 2441 3.05 ≤20.97 PASS DH5 Ant1 2480 2.09 ≤20.97 PASS 2DH5 Ant1 2402 3.60 ≤20.97 PASS 2DH5 Ant1 2441 3.66 ≤20.97 PASS 2DH5 Ant1 2480 2.76 ≤20.97 PASS 3DH5 Ant1 2402 5.77 ≤20.97 PASS 3DH5 Ant1 2441 5.76 ≤20.97 PASS 3DH5 Ant1 2480 4.85 ≤20.97 PASS Test Graphs DH5-Ant1-2402-PASS DH5-Ant1-2441-PASS Page 8 of 49 Report No. ESTE-R2509030 DH5-Ant1-2480-PASS 2DH5-Ant1-2402-PASS Page 9 of 49 Report No. ESTE-R2509030 2DH5-Ant1-2441-PASS 2DH5-Ant1-2480-PASS Page 10 of 49 Report No. ESTE-R2509030 3DH5-Ant1-2402-PASS 3DH5-Ant1-2441-PASS Page 11 of 49 Report No. ESTE-R2509030 3DH5-Ant1-2480-PASS Page 12 of 49 Report No. ESTE-R2509030 Appendix C: Carrier frequency separation Test Result TestMode Antenna Frequency[MHz] Result[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.93 ≥0.638 PASS DH5 Ant1 2441 1.065 ≥0.957 PASS DH5 Ant1 2480 0.861 ≥0.638 PASS 2DH5 Ant1 2402 1.092 ≥0.848 PASS 2DH5 Ant1 2441 1.191 ≥0.848 PASS 2DH5 Ant1 2480 1.014 ≥0.848 PASS 3DH5 Ant1 2402 1.128 ≥0.848 PASS 3DH5 Ant1 2441 0.996 ≥0.848 PASS 3DH5 Ant1 2480 0.954 ≥0.848 PASS Page 13 of 49 Report No. ESTE-R2509030 Test Graphs DH5-Ant1-2402-PASS DH5-Ant1-2441-PASS DH5-Ant1-2480-PASS Page 14 of 49 Report No. ESTE-R2509030 2DH5-Ant1-2402-PASS 2DH5-Ant1-2441-PASS Page 15 of 49 Report No. ESTE-R2509030 2DH5-Ant1-2480-PASS 3DH5-Ant1-2402-PASS Page 16 of 49 Report No. ESTE-R2509030 3DH5-Ant1-2441-PASS 3DH5-Ant1-2480-PASS Page 17 of 49 Report No. ESTE-R2509030

Address:BuildingH,HongyingliangIndustrialZone,Shaibailai,BaolongStreet,LonggangDistrict,ShenzhenCity TEL:0755-28700870FAX：0755-28483275 Website:www.kxwxjs.com ProductAcknowledgment Cover/SignaturePage CustomerName： CustomerPartNumber： KexinPartNumber：JBSP0006 SpecificationDescription：2.4-5.8Gdual-bandrubberrodantenna ProductionDate：2025年08月15日 FactoryDeliveryConfirmation： DepartmentReviewApproval RadioFrequency Department ZhouXihuaLee StructuralDepartment ShawnLee QualityDepartment LiuChunyuFeiWang CustomerConfirmation： CheckReviewApproval Address:BuildingH,HongyingliangIndustrialZone,Shaibailai,BaolongStreet,LonggangDistrict,ShenzhenCity TEL:0755-28700870FAX：0755-28483275 Website:www.kxwxjs.com TextControlRecord △RecordofDocumentFormulation,RevisionandAbolition DocumentNameDateControlRevisionRelatedContentFormulateApproval SampleApprovalForm 2025.08.15V1 Firstproduction EileenLee Address:BuildingH,HongyingliangIndustrialZone,Shaibailai,BaolongStreet,LonggangDistrict,ShenzhenCity TEL:0755-28700870FAX：0755-28483275 Website:www.kxwxjs.com TableofContents 1 ． Cover/SignaturePage......................................................1 2 ． TextControlRecord...............................................................2 3．TableofContents.....................................................................3 4 ． ProductPerformanceParameters..........................................4 5 ． Productdimensiondrawing......................................................5 6 ． ElectricalPerformanceTestReport.............................................6-7 7 ． Actualproductpictures............................................................8 8 ． Environmentaltest.....................................................................8-10 Address:BuildingH,HongyingliangIndustrialZone,Shaibailai,BaolongStreet,LonggangDistrict,ShenzhenCity TEL:0755-28700870FAX：0755-28483275 Website:www.kxwxjs.com ProductPerformanceParameters ElectricalSpecifications FrequencyRange(MHz)2400-2500/5150-5850MHz InputImpendence(Ω)50 V.S.W.R ≤ 2.0(Nomatchingequipment,for referenceonly) Gain(dbi)2 ± 0.5(Nomatchingequipment,for referenceonly) PolarizationType Verticalpolarization RadiationDirection Omni-Directional ContinuityTestchannel MechanicalSpecifications Antennasize(mm)Φ10*108.5mm ConnectTypeSMA-J RadomeMaterial ABS RadomeColorBlack OperatingTemp-30~+75 ̊C Address:BuildingH,HongyingliangIndustrialZone,Shaibailai,BaolongStreet,LonggangDistrict,ShenzhenCity TEL:0755-28700870FAX：0755-28483275 Website:www.kxwxjs.com Productdimensiondrawing Address:BuildingH,HongyingliangIndustrialZone,Shaibailai,BaolongStreet,LonggangDistrict,ShenzhenCity TEL:0755-28700870FAX：0755-28483275 Website:www.kxwxjs.com ElectricalPerformanceTestReport：VSWR Efficiency&Gain Frequency(MHz)Efficiency(%)PeakGain(dBi) 240041.451.69 245041.571.70 250051.221.89 515064.012.51 525063.592.49 Address:BuildingH,HongyingliangIndustrialZone,Shaibailai,BaolongStreet,LonggangDistrict,ShenzhenCity TEL:0755-28700870FAX：0755-28483275 Website:www.kxwxjs.com 535056.401.93 545054.042.04 555057.321.93 565056.161.83 575060.932.06 585065.782.53 3D&2DPattern Address:BuildingH,HongyingliangIndustrialZone,Shaibailai,BaolongStreet,LonggangDistrict,ShenzhenCity TEL:0755-28700870FAX：0755-28483275 Website:www.kxwxjs.com Address:BuildingH,HongyingliangIndustrialZone,Shaibailai,BaolongStreet,LonggangDistrict,ShenzhenCity TEL:0755-28700870FAX：0755-28483275 Website:www.kxwxjs.com Actualproductpictures EnvironmentalTestReport 8.1Highandlowtemperaturehumiditytest TestName JBSP0006 ProductNameandSpecification 2.4-5.8Gdual-bandrubber rodantenna TestItemHightemperature,lowtemperatureandconstanthumiditytests RequirementConstanttemperatureandhumidity testchamber Numberoftests 1PCS TestMethod1.Themetalsurfacecoatingshallbefreefromdefectssuchaspeeling,crackingand wrinkling;non-metallicpartsshallnothavephenomenasuchasdiscoloration,cracking, deformationanddegumming. ResultDeterminationTestItemsRequirementsTestMethodResultDetermination High-temperature Test Temperature(°C) Testsample temperaturetime(h) Testduration(h) Recoverytime(h) 75±3 1 2 1 Teststeps: a)Putthetestedpiece intothetestchamber, thenadjustthe temperatureofthe high-temperature chamberto75°C±3°C, andmonitorthetime. b)Afterthetest,place itatroomtemperature for1hourandconduct routineinspection. Qualified Low-temperature Test Temperature（°C） TimeforTest SampletoReach Temperature（h） TestDuration（h） RecoveryTime（h） -30±3 1 2 1 Testprocedures: a)Putthetestedpiece intothetestchamber, thenadjustthe temperatureofthe high-temperature chamberto75°C±3°C, andmonitorthetime. b)Afterthetest,place itatroomtemperature Qualified Address:BuildingH,HongyingliangIndustrialZone,Shaibailai,BaolongStreet,LonggangDistrict,ShenzhenCity TEL:0755-28700870FAX：0755-28483275 Website:www.kxwxjs.com for1hourandconduct routineinspection. Constantdampheat test Temperature（°C） RelativeHumidity(%) TestDuration(h) RecoveryTime(h) +40±3 90-95 21 1 a)Putthetestedpiece intothetestchamber, thenadjustthe temperatureofthetest chamberto+40°C±3°C andthehumidityto 90-95%,andmonitor thetime. b)Afterthetest,placeit atroomtemperaturefor 1hourandconduct routineinspection. Qualified Inspector:LiuChunyuReview:WangFei 8.2Saltspraytest PartNumber JBSP0006 ProductNameand Specification 2.4-5.8Gdual-bandrubberrod antenna TestItemsSaltspraytest TestingequipmentSaltspraytestingmachineNumberoftests1PCS Inspection Standard 1.Themetalsurfacecoatingshallnotpeeloff;thereshallbenodefectssuchasrust, corrosion,oxidation,etc.ontheappearance. TestNameTestItemsRequirementsTestMethodResult Judgment Saltspraytest1.NaClconcentrat ion: 2.Airpressure: 3.PHvalue: 4.Sprayvolume: 5.Brinetest temperature setting a.Laboratory temperature: b.Pressure barrel temperature: 6.Testtime: 40-60g/1kg 1.0±0.01kgf㎡ 6.5-7.2 1.0-2.0ml/80c/h 35±1°C 47±1°C 12H Teststeps: a)Adjustthesaltspray testingmachinetothe relevanttestconditions. b)Putthetestedpiece intothesaltspraytesting machineandleaveitfor 12hours.Afterthetest, rinseitwithclea…

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Page 1 of 52 Report No. ESTE-R2509030 FCC PART 15C TEST REPORT FOR CERTIFICATION On Behalf of Guangzhou ToneWinner Electronics CO.,Ltd Professional processor Model Number: AT-500 Additional Model: AT-500PRO, AT-500PRO+, AD-7500HD, AD-7500HDII FCC ID: 2BRNE-AT-500 Applicant: Guangzhou ToneWinner Electronics CO.,Ltd Address: Building 2, No.1, Hongsheng 3 Road, Dashi, Panyu, Guangzhou 511430, China Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2509030 Date of Test: Aug. 11, 2025~ Nov. 12, 2025 Date of Report: Nov. 17, 2025 Page 2 of 52 Report No. ESTE-R2509030 TABLE OF CONTENTS Description Page TEST REPORT VERIFICATION .......................................................................................................... 3 1. GENERAL INFORMATION ................................................................................................................... 5 1.1. Description of Device (EUT) ............................................................................................................ 5 1.2. Antenna Information ......................................................................................................................... 5 1.3. Information of RF Cable ................................................................................................................... 5 2. SUMMARY OF TEST ........................................................................................................................... 6 2.1. Summary of test result ..................................................................................................................... 6 2.2. Test Facilities ..................................................................................................................................... 7 2.3. Measurement uncertainty ................................................................................................................ 8 2.4. Assistant equipment used for test .................................................................................................. 8 2.5. Block Diagram ................................................................................................................................... 8 2.6. Test mode .......................................................................................................................................... 9 2.7. Channel List ..................................................................................................................................... 10 2.8. Power Setting of Test Software .................................................................................................... 10 2.9. Test Equipment ............................................................................................................................... 11 3. MAXIMUM PEAK OUTPUT POWER ................................................................................................... 13 3.1. Limit ................................................................................................................................................... 13 3.2. Test Setup ........................................................................................................................................ 13 3.3. Spectrum Analyzer Setting ............................................................................................................ 13 3.4. Test Procedure ................................................................................................................................ 13 3.5. Test Result ....................................................................................................................................... 13 4. 20 DB BANDWIDTH ......................................................................................................................... 14 4.1. Limit ................................................................................................................................................... 14 4.2. Test Setup ........................................................................................................................................ 14 4.3. Spectrum Analyzer Setting ............................................................................................................ 14 4.4. Test Procedure ................................................................................................................................ 14 4.5. Test Result ....................................................................................................................................... 14 5. CARRIER FREQUENCY SEPARATION .............................................................................................. 15 5.1. Limit ................................................................................................................................................... 15 5.2. Test Setup ........................................................................................................................................ 15 5.3. Spectrum Analyzer Setting ............................................................................................................ 15 5.4. Test Procedure ................................................................................................................................ 15 5.5. Test Result ....................................................................................................................................... 15 6. NUMBER OF HOPPING CHANNEL ................................................................................................... 16 6.1. Limit ................................................................................................................................................... 16 6.2. Test Setup ....................................................................…

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Page 1 of 4 Report No. ESTE-R2509032 FCC 47 CFR MPE REPORT Guangzhou ToneWinner Electronics CO.,Ltd Professional processor Model Number: AT-500 Additional Model: AT-500PRO, AT-500PRO+, AD-7500HD, AD-7500HDII FCC ID: 2BRNE-AT-500 Applicant: Guangzhou ToneWinner Electronics CO.,Ltd Address: Building 2, No.1, Hongsheng 3 Road, Dashi, Panyu, Guangzhou 511430, China Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2509032 Date of Test: Aug. 11, 2025~Nov. 12, 2025 Date of Report: Nov. 17, 2025 Page 2 of 4 Report No. ESTE-R2509032 Maximum Permissible Exposure 1. Applicable Standards Systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess limit for maximum permissible exposure. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as a mobile device whereby a distance of 0.2m normally can be maintained between the user and the device. 1.1. Limits for Maximum Permissible Exposure (MPE) (a) Limits for Occupational/Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times ︱E︱ 2 ,︱H︱ 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842/f 4.89/f (900/f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-10000 5 6 (b) Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Times ︱E︱ 2 ,︱H︱ 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-10000 1.o 30 Note: f=frequency in MHz; *Plane-wave equivalent power density Page 3 of 4 Report No. ESTE-R2509032 1.2. MPE Calculation Method E (V/m) = d G × P × 30 Power Density: Pd (W/m 2 ) = 377 E 2 E = Electric Field (V/m) P = Peak RF output Power (W) G = EUT Antenna numeric gain (numeric) d = Separation distance between radiator and human body (m) The formula can be changed to Pd = 2 d × 377 G × P × 30 From the peak EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained Page 4 of 4 Report No. ESTE-R2509032 2. Conducted Power Result Mode Frequency (MHz) Peak output power (dBm) Peak output power (mW) GFSK 2402 2.92 1.959 2441 3.05 2.018 2480 2.09 1.618 π/4-DQPSK 2402 3.6 2.291 2441 3.66 2.323 2480 2.76 1.888 8-DPSK 2402 5.77 3.776 2441 5.76 3.767 2480 4.85 3.055 BLE 1M 2402 3.38 2.178 2440 3.48 2.228 2480 2.46 1.762 BLE 2M 2402 4.29 2.685 2440 4.2 2.630 2480 3.23 2.104 3. Calculated Result and Limit Mode Peak output power (dBm) Target power (dBm) MAX Target power (dBm) Antenna gain Power Density (S) (mW /cm 2 ) Limited of Power Density (S) (mW /cm 2 ) Test Result (dBi) (Linear) GFSK 3.05 3±1 4 1.89 1.545 0.00077 1 Complies π/4-DQPSK 3.66 3±1 4 1.89 1.545 0.00077 1 Complies 8-DPSK 5.77 5±1 6 1.89 1.545 0.00122 1 Complies BLE 1M 3.48 3±1 4 1.89 1.545 0.00077 1 Complies BLE 2M 4.29 4±1 5 1.89 1.545 0.00097 1 Complies End of Test Report

CoveredEquipmentCertificationAttestationLetter FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA ATTN.:ReviewingEngineer FCCID:2BRNE-AT-500 GuangzhouToneWinnerElectronicsCo.,Ltdcertifiesthattheequipmentforwhich authorizationissoughtisnot“covered”equipmentprohibitedfromreceivingan equipmentauthorizationpursuanttosection2.903oftheFCCrules. Note:Iftheequipmentforwhichtheapplicantseeksauthorizationisproducedbyanyof theentitiesidentifiedonthecurrentCoveredList,theapplicantshouldincludean explanationonwhytheequipmentisnot“covered”equipment. GuangzhouToneWinnerElectronicsCo.,Ltdcertifiesthat,asofthedateofthefilingof theapplication,theapplicantisnotidentifiedontheCoveredList(asaspecifically namedentityoranyofitssubsidiariesoraffiliates)asanentityproducing“covered” equipment. GuangzhouToneWinnerElectronicsCo.,Ltdcertifiesthattheequipmentforwhich authorizationissoughtdoesnotincludecybersecurityoranti-virussoftwareproducedor providedbyKasperskyLab,Inc.oranyofitssuccessorsandassignees,including equipmentwithintegratedKasperskyLab,Inc.(oranyofitssuccessorsandassignees) cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB986446D01 CoveredEquipmentGuidancesectionB(2a). Signed: Name:HelenZhao Title:Safetyengineer Company:GuangzhouToneWinnerElectronicsCo.,Ltd Date:11/20/2025

InternalPhotos M/N:AT-500 InternalPhotos M/N:AT-500 InternalPhotos M/N:AT-500

LabelLocation

ExternalPhotos M/N:AT-500 ExternalPhotos M/N:AT-500 ExternalPhotos M/N:AT-500

GuangzhouToneWinnerElectronicsCo.,Ltd I,thesigner, Inadditiontothemodelname,PCBLayout,componentsandcomponent layout,allelectricalconstructionandmechanicalconstruction. Theyareidenticalexceptmodelname. ProductName:Professionalprocessor ModelNumber：AT-500 FCCID：2BRNE-AT-500 AdditionalModel: AT-500,AT-500PRO,AT-500PRO+,AD-7500HD,AD-7500HDII. Signed: Name:HelenZhao Title:Safetyengineer Company:GuangzhouToneWinnerElectronicsCo.,Ltd Date:11/25/2025

DATE:11/20/2025 EquipmentAutorisationDivision FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 FCCID:2BRNE-AT-500 ProductName:Professionalprocessor RequestforConfidentiality PursuanttoSections0.457and0.459ofthecommissionsrules,weherebyrequestthat thefollowingdocumentsbeheldconfidential: Schematics Blockdiagram  Operationdescription Thesematerialscontaintradesecretsandproprietaryinformationandarenot customarilyreleasedtothepublic.Thepublicdisclosureofthisinformationmightbe harmfultothecompanyandprovideunjustifiedbenefitstoourcompetitors. <Signature> Name:HelenZhao Title:Safetyengineer Company:GuangzhouToneWinnerElectronicsCo.,Ltd

DATE:11/20/2025 FederalCommunicationsCommission Authorization&EvaluationDivision 7345OaklandMillsRoad Columbia,Maryland21046 AuthoritytoActasAgent Onourbehalf,IappointESTTechnologyCo.,Ltd.Address:Chilingxiang,Qishantou, Santun,Houjie,Dongguan,Guangdong,Chinatoactasouragentinthepreparationof thisapplicationforequipmentcertification.Icertifythatsubmitteddocumentsproperly describethedeviceorsystemforwhichequipmentcertificationissought.Ialsocertifythat eachunitmanufactured,importedormarketed,asdefinedintheFederalCommunications Commission’sregulationswillhaveaffixedtoitalabelidenticaltothatsubmittedfor approvalwiththisapplication. Forinstanceswhereourauthorizedagentsignstheapplicationforcertificationonour behalf,Iacknowledgethatallresponsibilityforcomplyingwiththetermsandconditions forcertification,stillresideswithGuangzhouToneWinnerElectronicsCo.,LtdAddress: Building2,No.1,HongSheng3Road,Dashi,Panyu,Guangzhou,Guangdong,China; <Signature> Name:HelenZhao Title:Safetyengineer Company:GuangzhouToneWinnerElectronicsCo.,Ltd

* theapplicantmustdesignateacontactlocatedintheUnitedStatesforpurposesofactingasthe applicant’sagentforserviceofprocess,regardlessofwhethertheapplicantisadomesticorforeign entity.AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforserviceofprocess. U.S.AgentDesignationforServiceofProcess- CertificationAttestationLetter 11/1/2023 TO:FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 ATTN.:ReviewingEngineer FCCID:2BRNE-AT-500 FRNofapplicant:0037391786 Persection2.911(d)(7)oftheFCCrules,GuangzhouToneWinnerElectronicsCo.,Ltd(“the applicant”)certifiesthattheequipmentforwhichauthorizationissoughtisdesignatedtothe followingU.S.agent*forserviceofprocess: CompanyName:SUMMITHIFIAUDIOLLC FCCRegistrationNumber(FRN): PhysicalU.S.CompanyAddress:79014THSTNSTE300ST.PETERSBURG,FL.US33702USA ContactPerson:TAYLORNEWMAN AgentEmailAddress:[email protected] Theabovecontactpersonacceptstheobligationforserviceofprocess. Theapplicantacceptstomaintainanagentfornolessthanoneyearafterthegranteehas terminatedallmarketingandimportationortheconclusionofanyCommission-related proceedinginvolvingtheequipment. ApplicantSigned:AgentSigned(ifdifferentfromApplicant): Signed:Signed: Printedname:HelenZhaoPrintedname:Aamirvahidy Title: Safetyengineer Title:AMBR CompanyName:GuangzhouToneWinnerElectronicsCo.,LtdCompanyName:SUMMITHIFIAUDIOLLC Date:11/20/2025Date:11/20/2025