2AX7I-D20Bluetooth Speaker

User Manual FUNCTIONS Bluetooth Mode: The speaker will first enter Bluetooth Mode, and switch on your Bluetooth device for pairing with the speaker, when pairing, search for the device name " D20 ", to connect and then it will reconnect in the future automatically if it is in the range. 1. Power Switch: Switch On/Off 2. Play/Pause: Short press the "" button to play/stop playing music. 3. Vol-/Previous song: Short press the"－" button to play the previous song, Long press the"－"button to volume down. 4. Vol+/Next song: Short press" + " button to play next song, long press" + "button for volume up. 5. Hand-Free Mode:- To answer/hang up the call under Bluetooth mode, press the " " button. Under Bluetooth mode, when you have a call coming, Short press the " "button to answer or hang up. Long press the " "button to reject the call.Double click the " "button to redial the last number. 6. TF Card: Music will play automatically when a TF card is inserted. 7. FM Functions: Short Press the "M" button to switch to FM mode. Long pressing the"" button will search radio stations automatically. After finishing the search radio, the speaker will automatically memorize the frequencies found. You can press the "+" button or "－" button to select the radio stations. (Please note that this function needs to plug in a charging cable to enhance the radio signal, Open areas will get more channels). 8. RGB Led Light: Long Press "M" button to Change/Turn on/off the Led light. 9. TWS Functions: Long press the "" button under Bluetooth mode, you can hear the sound, which means two speakers are connected successfully, they will auto-link when turning on the speaker next time. (Please note that this function needs 2 pieces of speakers). Note: When BT transmitting devices cannot be connected, please delete the rest of BT receiving devices' names on the list. Re-activate, re-searching, and re-paring. Troubleshooting: 1.）The phone call could interfere with high-frequency electromagnetism. People should try not to use this product in a high-frequency environment. 2.）Bluetooth is a bidirectional transmitting protocol; transmitting distance is highly related to the audio player. Compatible BT players are recommended. 3.）Some terminal players are without automatically switching play functions. In this case, POP noise will exist in the interval of every 2 songs. 4.）The sound performance could also be affected when BT transmitting devices are in a poor signal environment, or under low battery capacity. Parameter: Material: ABS body + Metal Output power: 10W*1 + 1*Passive Radiator Input power: DC5V/500mA Battery Li-ion: 1200mah Frequency Response: 100hz-20KHZ Dimension: 145*102*170mm Function: Bluetooth/FM radio/TF card/Hand-free/RGB/TWS function Bluetooth version: 5.3 Attention: 1. Use this product under a typical temperature environment. 2. Do not play in the wet environment. 3. Avoid the damage of falling. 4. Do not dismantle or repair the speaker by yourself. 5. Built-in battery, do not throw the speaker in the fire. FCC Statement Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -- Reorient or relocate the receiving antenna. -- Increase the separation between the equipment and receiver. -- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -- Consult the dealer or an experienced radio/TV technician for help This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions (1)this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.

ShenzhenHaoYuanTechnologyCo.,ltd U.S.AgentDesignationforServiceofProcess (ApplicantandU.S.AgentareSeparateParties) TO:FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046,USA ATTENTION:FCCCertification–Section2.911(d)(7)Information DesignatedU.S.Agent CompanyName:SELLERHELPERIN FRN:0033406737 ContactName:FairyLee Address:131217thStreet#1298 ， Denver ， CO80202 ， UnitedStates TelephoneNo:01303-7319873 Email:[email protected] Thisletteristoconfirmthatwe(“theDesignatedU.S.Agent)haveacceptedtheresponsibilitytoactasthe DesignatedU.S.AgentforServiceofProcessasrequiredbysection47CFR2.911(d)(7)onbehalfofthe Applicantnotedbelow. U.S.AgentSignature: Date:2024/7/18 Signedby(PrintedName/Title): TheApplicantacknowledgesthattheymustmaintainanagentfornolessthanoneyearafterterminatingall marketingandimportationORtheconclusionofanyCommission-relatedproceedinginvolvingthe equipment.TheapplicantfurtheracknowledgestheirresponsibilitytoinformtheFCCwheneverthe DesignatedU.S.Agentinformationabovechanges. Applicant Companyname:ShenzhenHaoYuanTechnologyCo.,ltd GranteeCode:2AX7I FCCID:2AX7I-D20 FRN:0030197784 ContactName:StevenLiu Address:246Room,ZhongzhengFortuneBuilding,BaoAnDistrict,Shenzhen TelephoneNo:13423888483 Email:[email protected] ApplicantSignature: Date:2024/7/18 Signedby(PrintedName/Title):StevenLiu/Manager

Shenzhen HaoYuan Technology Co.,ltd 2024/7/18 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: 2AX7I-D20) [Shenzhen HaoYuan Technology 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. Sincerely, (Applicant signature) (Applicant printed name) Steven Liu Shenzhen HaoYuan Technology Co.,ltd 2024/7/18 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: 2AX7I-D20) [Shenzhen HaoYuan Technology 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. Sincerely, (Applicant signature) (Applicant printed name)Steven Liu

Shenzhen HaoYuan Technology Co.,ltd 2024/7/18 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Bluetooth Speaker Trademark: N/A MODEL: D20, D13, D14, D15, D20, D21, D22, D23, D30, D31, D32, D33, D36, D38, D40, D42, D43, D44, D46, D50, D60, D70, D90, P50, P60, P66, P68, P80, P88, P90 FCC ID: 2AX7I-D20 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 required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title: Steven Liu / MANAGER Contact information / address: 246 Room, Zhongzheng Fortune Building ,BaoAn District,Shenzhen

ShenzhenHaoYuanTechnologyCo.,ltd 2024/7/18 EurofinsElectricalandElectronicTestingNA,Inc. 914W.PatapscoAvenue Baltimore,MD21230 USA RE:LETTEROFAGENTAUTHORIZATION EUTNAME:BluetoothSpeaker Trademark:N/A MODEL:D20,D13,D14,D15,D20,D21,D22,D23,D30,D31,D32,D33,D36, D38,D40,D42,D43,D44,D46,D50,D60,D70,D90,P50,P60,P66,P68,P80, P88,P90 ToWhomItMayConcern: We,theundersigned,herebyauthorizeShenzhenBCTCTestingCo.,Ltdtoactonourbehalfinall mattersrelatingtoapplicationforequipmentauthorization,includingthesigningofalldocuments relatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothe denialofbenefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseAct of1988,21U.S.C.853(a). Thisagreementexpiresoneyearfromthecurrentdate. Sincerely, Client’ssignature: Client’sname/title:StevenLiu/MANAGER Contactinformation/address:246Room,ZhongzhengFortune Building,BaoAnDistrict,Shenzhen

ShenzhenHaoYuanTechnologyCo.,ltd 2024/7/18 EUTNAME:BluetoothSpeaker Trademark:N/A MODEL:D20,D13,D14,D15,D20,D21,D22,D23,D30,D31,D32,D33,D36,D38, D40,D42,D43,D44,D46,D50,D60,D70,D90,P50,P60,P66,P68,P80,P88,P90 AllthemodelarethesamecircuitandRFmodule,exceptmodelnames. Sincerely Client’ssignature: Client’sname/title:StevenLiu/MANAGER Contactinformation/address:246Room,ZhongzhengFortune Building,BaoAnDistrict,Shenzhen

External Photos

Size:20*5mm FCC ID: 2AX7I-D20 Label location

Internal Photos Antenna

FCC ID: 2AX7I-D20 RF exposure evaluation §2.1093 Radiofrequency radiation exposure evaluation: Portable Devices. According to§15.247(i) and§1.1307b(1), 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 of the commission’s guidance. The 1-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR, where  f(GHz) is the RF channel transmit frequency in GHz  Power and distance are rounded to the nearest mW and mm before calculation  When the minimum test separation distance is < 5 mm, a distance of 5 mm according is applied to determine SAR test exclusion.  The result is rounded to one decimal place for comparison  GFSK Modulation Frequency (GHz) Max. Power (dBm) Tune up Power (dBm) Max. Tune up Power (dBm) Max. Tune up Power (mW) Test distance (mm) Result exclusion thresholds for 1-g SAR GFSK(2Mbps) 2.402 -2.30 -3±1 -2 0.63 5 0.20 3.0 8DPSK 2402 -0.96 -1±1 0 1.00 5 0.31 3.0 Conclusion: For the max result : 0.31W/Kg ≤ FCC Limit 3.0 for 1g SAR. The Product unsupported at the same time to Transmitting.

V . S .W . R < 1.4 Polarization Type V ertical & Horizontal Frequenc Range 2400 ~ 2500GHz Input Impendence(ohm) 50 Efficiency (dB) 6 0.2 % 6 0.2 % Maximum Power (dBm) 1.6 8(XZ-plane) Gain (dBi) -0.48 (Avg Gain XY-plane) Peak EIRP(dBm)1.2 Tot. Rad. Pwr. (dBm)-1.2 (Input pwr – loss pwr) Product specification Quick Reference Date Antenna module on the system board Ant. Port Input Pwr. (dBm)0 (Typ. BT class 2 output power) Directivity (dBi)1 (all direction antenna) Minimum Power (dBm ) -3.83(XZ-plane) Avg. Power (dBm) -0.48(XY-plane) All the technical data and information contained herein are subject to change without prior notice Antenna Layout & module on the system board Antenna Gain Gain Table Unit in dBi @2.44GHzXY-planeXZ-planeYZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. Module Board 1.68 1.35 -0.48 -3.83 1.11 -2.99 Design company:shenzhen HuaSai Electric Technology Co.Ltd. spce:ANT_XZR01 Return Loss The Environment of Antenna Radiation Pattern 3D radiation pattern diagram XY-planeXZ-planeYZ-plane

No.：BCTC/RF-EMC-005 Page: 1 of 85 Edition：B.2 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2405427668-2E Applicant: Shenzhen HaoYuan Technology Co.,ltd Product Name: Bluetooth Speaker Test Model: D20 Tested Date: 2024-05-31 to 2024-07-30 Issued Date: 2024-07-30 Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 2 of 85 Edition：B.2 FCC ID: 2AX7I-D20 The test report is effective only with both signature and specialized stamp.This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: Bluetooth Speaker Trademark: N/A Model/Type Reference: D20 D13, D14, D15, D20, D21, D22, D23, D30, D31, D32, D33, D36, D38, D40, D42, D43, D44, D46, D50, D60, D70, D90, P50, P60, P66, P68, P80, P88, P90 Prepared For: Shenzhen HaoYuan Technology Co.,ltd Address: 246 Room, Zhongzheng Fortune Building, BaoAn District, Shenzhen, China Manufacturer: Shenzhen HaoYuan Technology Co.,ltd Address: 246 Room, Zhongzheng Fortune Building, BaoAn District, Shenzhen, China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Zhancheng, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2024-05-31 Sample Tested Date: 2024-05-31 to 2024-07-30 Issue Date: 2024-07-30 Report No.: BCTC2405427668-2E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Min Zhi Cheng/ Project Handler Zero Zhou/Reviewer Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 3 of 85 Edition：B.2 Table Of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information And Test Setup ..................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 9 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List ........................................................................................................ 10 4.5 Test Mode ........................................................................................................... 10 4.6 Table Of Parameters Of Text Software Setting ................................................... 10 5. Test Facility And Test Instrument Used ............................................................... 11 5.1 Test Facility ......................................................................................................... 11 5.2 Test Instrument Used .......................................................................................... 11 6. Conducted Emissions .......................................................................................... 13 6.1 Block Diagram Of Test Setup .............................................................................. 13 6.2 Limit .................................................................................................................... 13 6.3 Test procedure .................................................................................................... 13 6.4 EUT operating Conditions ................................................................................... 13 6.5 Test Result .......................................................................................................... 14 7. Radiated emissions ............................................................................................. 16 7.1 Block Diagram Of Test Setup .............................................................................. 16 7.2 Limit .................................................................................................................... 17 7.3 Test procedure .................................................................................................... 18 7.4 EUT operating Conditions ................................................................................... 19 7.5 Test Result .......................................................................................................... 19 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 25 8.1 Block Diagram Of Test Setup .............................................................................. 25 8.2 Limit .................................................................................................................... 25 8.3 Test procedure .................................................................................................... 26 8.4 EUT operating Conditions ................................................................................... 26 8.5 Test Result .......................................................................................................... 27 9. Spurious RF Conducted Emissions ..................................................................... 28 9.1 Block Diagram Of Test Setup .............................................................................. 28 9.2 Limit .................................................................................................................... 28 9.3 Test procedure .................................................................................................... 28 9.4 Test Res…

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Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 58 of 85 Edition：B.2 Power NVNT 1-DH1 2480MHz Power NVNT 2-DH1 2402MHz Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 59 of 85 Edition：B.2 Power NVNT 2-DH1 2441MHz Power NVNT 2-DH1 2480MHz Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 60 of 85 Edition：B.2 Power NVNT 3-DH1 2402MHz Power NVNT 3-DH1 2441MHz Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 61 of 85 Edition：B.2 Power NVNT 3-DH1 2480MHz Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 62 of 85 Edition：B.2 12. Hopping Channel Separation 12.1 Block Diagram Of Test Setup 12.2 Limit 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 0.125W. 12.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 30kHz. VBW = 100kHz , Span = 2.0MHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the adjacent channels. The limit is specified in one of the subparagraphs of this Section Submit this plot. 12.4 Test Result Mode Test Channel Separation (MHz) Limit(MHz) Result 1-DH1 Low 1.002 0.607 PASS 1-DH1 Middle 1.000 0.680 PASS 1-DH1 High 1.000 0.665 PASS 2-DH1 Low 0.998 0.845 PASS 2-DH1 Middle 1.000 0.845 PASS 2-DH1 High 1.000 0.841 PASS 3-DH1 Low 0.998 0.815 PASS 3-DH1 Middle 1.000 0.821 PASS 3-DH1 High 1.000 0.825 PASS Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 63 of 85 Edition：B.2 Test Graphs CFS NVNT 1-DH1 2402MHz CFS NVNT 1-DH1 2441MHz Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 64 of 85 Edition：B.2 CFS NVNT 1-DH1 2480MHz CFS NVNT 2-DH1 2402MHz Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 65 of 85 Edition：B.2 CFS NVNT 2-DH1 2441MHz CFS NVNT 2-DH1 2480MHz Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 66 of 85 Edition：B.2 CFS NVNT 3-DH1 2402MHz CFS NVNT 3-DH1 2441MHz Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 67 of 85 Edition：B.2 CFS NVNT 3-DH1 2480MHz Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 68 of 85 Edition：B.2 13. Number Of Hopping Frequency 13.1 Block Diagram Of Test Setup 13.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. 13.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 100kHz. VBW = 300kHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. It may prove necessary to break the span up to sections. in order to clearly show all of the hopping frequencies. The limit is specified in one of the subparagraphs of this Section. 4. Set the spectrum analyzer: Start Frequency = 2.4GHz, Stop Frequency = 2.4835GHz. Sweep=auto; 13.4 Test Result Condition Mode Hopping Number Limit Verdict NVNT 1-DH1 79 15 Pass NVNT 2-DH1 79 15 Pass NVNT 3-DH1 79 15 Pass Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 69 of 85 Edition：B.2 Test Graphs Hopping No. NVNT 1-DH1 2441MHz Hopping No. NVNT 2-DH1 2441MHz Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 70 of 85 Edition：B.2 Hopping No. NVNT 3-DH1 2441MHz Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 71 of 85 Edition：B.2 14. Dwell Time 14.1 Block Diagram Of Test Setup 14.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. The average time of occupancy on any channel shall not be greater than 0.4 seconds within a period of 0.4 seconds multiplied by the number of hopping channels employed. Frequency hopping systems may avoid or suppress transmissions on a particular hopping frequency provided that a minimum of 15 channels are used. 14.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set spectrum analyzer span = 0. Centred on a hopping channel; 3. Set RBW = 1MHz and VBW = 3MHz.Sweep = as necessary to capture the entire dwell time per hopping channel. Set the EUT for DH5, DH3 and DH1 packet transmitting. 4. Use the marker-delta function to determine the dwell time. If this value varies with different modes of operation (e.g.. data rate. modulation format. etc.). repeat this test for each variation. The limit is specified in one of the subparagraphs of this Section. Submit this plot(s). 14.4 Test Result Mode Frequency (MHz) Pulse Time (ms) Total Dwell Time (ms) Burst Count Period Time (ms) Limit (ms) Verdict 1-DH1 2441 0.376 117.688 313 31600 400 Pass 1-DH3 2441 1.631 256.067 157 31600 400 Pass 1-DH5 2441 2.88 313.92 109 31600 400 Pass 2-DH1 2441 0.386 122.362 317 31600 400 Pass 2-DH3 2441 1.638 260.442 159 31600 400 Pass 2-DH5 2441 2.886 297.258 103 31600 400 Pass 3-DH1 2441 0.387 122.679 317 31600 400 Pass 3-DH3 2441 1.636 253.58 155 31600 400 Pass 3-DH5 2441 2.888 303.24 105 31600 400 Pass Note: Total Dwell Time (ms) = Pulse Time (ms)*Burst Count Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 72 of 85 Edition：B.2 Test Graphs Dwell NVNT 1-DH1 2441MHz One Burst Dwell NVNT 1-DH1 2441MHz Accumulated Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 73 of 85 Edition：B.2 Dwell NVNT 1-DH3 2441MHz One Burst Dwell NVNT 1-DH3 2441MHz Accumulated Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 74 of 85 Edition：B.2 Dwell NVNT 1-DH5 2441MHz One Burst Dwell NVNT 1-DH5 2441MHz Accumulated Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 75 of 85 Edition：B.2 Dwell NVNT…

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Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 82 of 84 Edition：B.2 17.EUT Test Setup Photographs Conducted emissions Radiated Measurement Photos Report No.: BCTC2405427668-2E No.：BCTC/RF-EMC-005 Page: 83 of 84 Edition：B.2