2ARN3-WM4PRORXU2.4G wireless microphone

Thank you for purchasing BOYA BY-WM4 PRO system! Designed for videographers on a limited budgetand video hobbyists, BY-WM4 PRO is a new generation 2.4GHz wireless microphone system, dual-Channel for capturing audio with dual subjects to your smartphones, tablets, DSLR cameras, consumer camcorders, PCs etc. The BY-WM4 PRO system is suitable for a wide range of wireless applications such as interviews, mobile journalisms, reporting, vloggings, podcasts and more. The BY-WM4 PRO system is a expandable evolution system that allows the user to mix and match different kinds of receivers while using with the TX4 Pro transmitter. Please don’t touch here during using, otherwise, it will effect signal. Please don’t touch here during using, otherwise, it will effect signal. 7. Battery compartment Accommodates two pieces of AAA batteries. For more details, please see “Installing batteries” on page 11. For more details, please see “Installing or uninstalling clip” on page 15. 8. Clip 1. Earphone Jack Instruction Manual (3.5mm diameter stereo mini jack) To monitor the receiver output, connect the headphones to this connector. NOTE Do not connect headphones with a monaural mini jack. This may lead to short-circuiting of the headphone output, resulting in distorted sound output. NOTE Do not connect headphones with a monaural mini jack. This may lead to short-circuiting of the headphone output, resulting in distorted sound output. NOTE Do not connect headphones with a monaural mini jack. This may lead to short-circuiting of the headphone output, resulting in distorted sound output. NOTE 1)Please adjust the monitoring audio volume of RXD before recording. NOTE 1)Please adjust the monitoring audio volume of RXU before recording. 2. LINE OUT (audio output) Jack - For cameras, camcorders, audio recorders and other audio/Video recording devices. Connect one end of the supplied TRS stereo 3.5mm mini output cable here, and the other end to camera. 3. Power LED For more details, please see “Power LED” on page 7. 4. Power OFF/ON Press these buttons to set the attenuation level of the input signal. 6. Antenna 7. Battery compartment Accommodates two pieces of AAA batteries. For more details, please see “Installing batteries” on page 11. 8. Clip For more details, please see “Installing or uninstalling clip” on page 15. 9.Shoe mount adapter Connecting the transmitter and the ReceiverSet Up Guide Set Up GuideConnecting the transmitter and the Receiver ① ② ③ ④ ⑧ ⑤ ⑥ ⑦ ① ② ③ ④ ⑤ ⑥ ⑦ ② ① ③ ④ ⑤ ⑥ ⑦ ⑧ What’s difference? How to use it Installing batteries 1. Both transmitter and receiver requires two AAA size batteries. 2. Slide and remove the transmitter’s battery compartment cover. 3. Insert two pieces of batteries. 4. Close the battery compartment cover. 5. Do the same ways as step 2 to 4 to insert battery into receiver. Connecting the transmitter and receiver Using the microphone with smartphone, tablet, Mac or laptop with combo headphone/Mic jack. Receiver Using the microphone with cameras, camcorders, audio recorders and other audio/video recording devices. How to connect transmitter and receiver? Receiver Receiver (RX4 Pro) 3.5 mm TRS connector 2 - For cameras, camcorders, audio recorders and other audio/video recording devices. 3.5 mm TRRS connector - For Smartphone, tablet, Mac or laptop with combo headphone/Mic jack 1 Connect to Receiver “LINE OUT” Connect to Smartphone 1236784591011 121314151617181920212223 24252627282930313233 - For using smartphone, tablet or Mac Connect one end (90° plug) of the supplied TRRS stereo 3.5mm mini output cable here, and the other end (straight plug) to smartphone. 5. Volume +/- ① ② ③ ④ ⑤ ⑥ ⑦ BY-WM4 Pro consists of one body-pack transmitter(TX4 Pro), a portable receiver (RX4 Pro), and their accessories as following: Transmitter(TX4 Pro) Receiver(RX4 Pro) Lavalier/lapel microphone3.5mm to TRS audio output cable 3.5mm to TRRS audio output cable 1. Microphone input - Connect the supplied lavalier microphone here. - Fully insert the microphone’s 3.5mm plug and make sure it clicks into place. 1. Plug the BY-WM4 RXD directly into the lightning port of smartphone. 2. Open the audio/video app on mobile device, then the indicator of receiver should be light up. 3. The Power LED flashes slowly waiting for connecting with the transmitter. 1.Turn on the transmitter and plug the receiver into smartphone. 2. Long press the pair bottom of receiver with pair pin, the indicator of receiver will flash quickly when entering paring mode. Before leaving factory, the connection of transmitters and receiver will be established. If transmitters and receiver disconnect, please follow below steps: 3.Long press the pair button on the side of the transmitter entering the pairing mode. 4.When the transmitter and receiver connected, the light of receiver stays blue, and transmitter flashes every 2.5 seconds. Otherwise, the light of receiver and transmitter will flash continually every 1 second, then try 1-3 steps again. 1.Turn on the transmitter and plug the receiver into smartphone. 2. Long press the pair bottom of receiver with pair pin, the indicator of receiver will flash quickly when entering paring mode. Before leaving factory, the connection of transmitters and receiver will be established. If transmitters and receiver disconnect, please follow below steps: 3.Long press the pair button on the side of the transmitter entering the pairing mode. 4.When the transmitter and receiver connected, the light of receiver stays blue, and transmitter flashes every 2.5 seconds. Otherwise, the light of receiver and transmitter will flash continually every 1 second, then try 1-3 steps again. Press these buttons to set the attenuation level of the input signal. For more details, please see “Connecting the transmitter and the receiver” on page 21. 2. Line In 3. Power LED 1) The power LED flash blue when the unit is on. 2) The power LED glows red when low power. For more details about LED indicator, please refer to as follo…

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Shenzhen Jiayz photo industrial., Ltd Agent Authorization Company: Shenzhen Jiayz photo industrial., Ltd Address: A16 Builing, Intelligent Terminal Industrial Park of Sililcon Valley Power, Guanla, Longhua District, Shenzhen, China Product Name: 2.4G wireless microphone Trade Mark: BOYA, MOVO Model Number(s ): BY-WM4 PRO RXU, BY-WM4 PRO-K5, BY-WM4 PRO-K6, EDGE- UC, EDGE-UC-DUO, Edge-RXU FCC ID: 2ARN3-WM4PRORXU We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2021-07-06 Name: michael zhao Title: manager Company: Shenzhen Jiayz photo industrial., Ltd

Shenzhen Jiayz photo industrial., Ltd Add: A16 Builing, Intelligent Terminal Industrial Park of Sililcon Valley Power, Guanla, Longhua District, Shenzhen, China Tel: 13538005185 Fax: 0755-28435911 Date: 2021-07-06 To: MiCOM Labs Inc 575 Boulder Court, Pleasanton, California 94566, USA Dear Sir/Madam, We, Shenzhen Jiayz photo industrial., Ltd Hereby declares the following statement for MiCOM Labs Inc, PCB board, structure and internal of these model(s) are the same, Only model name and shell color is different for these models.. Product name: 2.4G wireless microphone Trade Mark: BOYA, MOVO Model No.: BY-WM4 PRO RXU, BY-WM4 PRO-K5, BY-WM4 PRO-K6, EDGE-UC, EDGE-UC-DUO, Edge-RXU Sincerely, Client’s name / title : michael zhao / manager Address: A16 Builing, Intelligent Terminal Industrial Park of Sililcon Valley Power, Guanla, Longhua District, Shenzhen, China Tel: 13538005185 Fax: 0755-28435911 E-mail: [email protected]

Shenzhen Jiayz photo industrial., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2021-07-06 Subject; Request for Confidentiality FCC ID: 2ARN3-WM4PRORXU To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: michael zhao Title: manager

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU 5. EXTERIOR PHOTOGRAPHS Fig.1 Fig.2 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Fig.3 Fig.4 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Fig.5 Fig.6 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Fig.7 Fig.8 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Fig.9 Fig.10 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Fig.11 Fig.12

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 1 LABEL AND LOCATION Size: L2.0cm*W1.5cm Label Location FCC ID: 2ARN3-WM4PRORXU Model No.: BY-WM4 PRO RXU Product Name: 2.4G wireless microphone

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU 6. INTERIOR PHOTOGRAPHS Fig.1 Fig.2 Antenna SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Fig.3 Fig.4

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3‐WM4PRORXU This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 3 FCC RF Exposure Evaluation 1. Product Information FCC ID: 2ARN3‐WM4PRORXU Product name 2.4G wireless microphone Model number BY‐WM4 PRO RXU Additional Model No. BY‐WM4 PRO‐K5, BY‐WM4 PRO‐K6, EDGE‐UC, EDGE‐UC‐DUO, Edge‐RXU Model Declaration PCBboard,structureandinternalofthese model(s) are thesame,So noadditionalmodelsweretested Power supply Input: DC 5V, 0.5W Modulation Type GFSK Channel Number 18channels Antenna Type PCBAntenna Antenna Gain 0.8 dBi(maximum) Hardware version V1.4 Software version V1.3 Operation frequency 2406MHz‐2474MHz Exposure category General population/uncontrolled environment EUT Type Production Unit Device Type Portable 2. Evaluation Method According to KDB447498 D01 General RF Exposure Guidance v06 Section 4.3.1 Standalone SAR test exclusion considerations: “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, listed below, is 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.22 The minimum test separation distance is determined by the smallest distance from the antenna and radiating structures or outer surface of the device, according to the host form factor, exposure conditions and platform requirements, to any part of the body or extremity of a user or bystander (see 5) of section 4.1). To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified by the operating configurations and exposure conditions of the transmitter and applicable host platform requirements, typically in the SAR measurement or SAR analysis report, according to the required published RF exposure KDB procedures. When no other RF exposure testing or reporting is required, a statement of justification and compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for the SAR test exclusion. When required, the device specific conditions described in the other published RF exposure KDB procedures must be satisfied before applying these SAR test exclusion provisions; for example, handheld PTT two‐way radios, handsets, laptops & tablets etc.“ [(max. power of channel, including tune‐up tolerance, mW)/ (min. test separaƟon distance, mm)] · [√f (GHz)] ≤ 3.0 for 1‐g SAR and ≤ 7.5 for 10‐ g extremity 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 • The result is rounded to one decimal place for comparison • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3‐WM4PRORXU This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 2 of 3 transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 5) in section 4.1 is applied to determine SAR test exclusion. When one of the following test exclusion conditions is satisfied for all combinations of simultaneous transmission configurations, further equipment approval is not required to incorporate transmitter modules in host devices that operate in the mixed mobile and portable host platform exposure conditions. The grantee is responsible for documenting this according to Class I permissive change requirements. Antennas that qualify for standalone SAR test exclusion must apply the estimated standalone SAR to determine simultaneous transmission test exclusion. a) The [∑ of (the highest measured or estimated SAR for each standalone antenna configuration, adjusted for maximum tune‐up tolerance) / 1.6 W/kg] + [∑ of MPE ratios] is ≤ 1.0. b) The SAR to peak location separation ratios of all simultaneously transmitting antenna pairs operating in portable device exposure conditions are all ≤ 0.04, and the [∑ of MPE ratios] is ≤ 1.0. 3. Refer Evaluation Method ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. FCC KDB publication 447498 D01 General RF Exposure Guidance v06: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies. FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits. FCC CFR 47 part2 2.1093: Radiofrequency radiation exposure evaluation: portable devices 4. Conducted Power Results 2.4GHz Transmit Mode Channel Frequency(MHz)Peak Conducted Output Power (dBm) GFSK 1 24060.638 9 24381.65 18 24740.353 5. Manufacturing Tolerance 2.4GHz Transmit GFSK (Peak) Channel Channel 1Channel 8Channel 15 Target (dBm) 0 1.00 Tolerance ±(dB) 1.0 1.01.0 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3‐WM4PRORXU This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 3 of 3 6. Evaluation Results 6.1 Standalone Evaluation Band/Mode f (GHz) Antenna Distance (mm) RF output power SAR Test Exclusion Threshold SAR Test Exclusion dBm mW GFSK 2.4385 2.01.58490.4949 < 3.0 Yes Remark: (1). RF output power including tune up tolerance; (2). When the minimum test separation distance is < 5 mm, a distance of 5 mm according to f) in section 4.1 of KDB 447498 is applied to determine SAR test exclu…

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SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Page 1 of 14 Appendix A RF Test Data for 2.4G (Conducted Measurement) Product Name: 2.4G wireless microphone Trade Mark: BOYA, MOVO Test Model: BY-WM4 PRO RXU Environmental Conditions Temperature: 22.3 C Relative Humidity: 51.5% ATM Pressure: 100.0 kPa Test Engineer: Carl Fu Supervised by: Li Huan A.1 Duty Cycle Test Mode Test Channel Ant Duty Cycle[%] Verdict GFSK 2438 Ant1 100 PASS #imgrbble1hchnnav SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Page 2 of 14 A.2 Maximum Conducted Peak Output Power Mode Channel Conduct Peak Power[dBm] Limit [dBm] Verdict GFSK LCH 0.638 30 PASS GFSK MCH 1.65 30 PASS GFSK HCH 0.353 30 PASS Test Graphs LCH MCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Page 3 of 14 HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Page 4 of 14 A.3 Maximum Power Spectral Density Mode Channel PSD [dBm/3KHz]Limit [dBm/3KHz] Verdict GFSK LCH -14.074 8 PASS GFSK MCH -13.092 8 PASS GFSK HCH -14.408 8 PASS Test Graphs LCH MCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Page 5 of 14 HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Page 6 of 14 A.4 6dB Bandwidth & A.5 99% Occupied Bandwidth Measurement Mode Channel 6dB Bandwidth [MHz]Limit [MHz] 99% Occupied Bandwidth Measurement [MHz] Verdict GFSK LCH 0.6699 ≥0.5 1.0516 PASS GFSK MCH 0.6760 ≥0.5 1.0481 PASS GFSK HCH 0.6696 ≥0.5 1.0479 PASS Test Graphs LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Page 7 of 14 MCH HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Page 8 of 14 A.5 RF Conducted Spurious Emissions Mode Channel Pref [dBm] Max. Level [dBm]Limit [dBm] Verdict GFSK LCH 0.09 -37.022 -19.910 PASS GFSK MCH 1.1 -38.007 -18.900 PASS GFSK HCH -0.199 -37.610 -20.199 PASS GFSK_LCH_Graphs Pref/GFSK/LCH Puw/GFSK/LCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Page 9 of 14 GFSK_MCH_Graphs Pref/GFSK/MCH Puw/GFSK/MCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Page 10 of 14 GFSK_HCH_Graphs Pref/GFSK/HCH Puw/GFSK/HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Page 11 of 14 A.6 Band-edge for RF Conducted Emissions Mode Channel Carrier Power[dBm] Max.Spurious Level [dBm] Limit [dBm] Verdict GFSK LCH 0.262 -49.826 -19.74 PASS GFSK HCH -0.113 -48.383 -20.11 PASS Test Graphs LCH HCH SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Page 12 of 14 A.7 Restrict-band band-edge measurements Test Mode Test Chann el Ant Freq. Power [dBm] Gain Ground Factor E [dBuV/m] Detector Limit [dBuV/ m] Verdi t GFSK 2402 Ant1 2310.0 -41.71 2.0053.55PEAK 74 PASS Ant1 2310.0 -53.16 2.0042.10AV 54 PASS Ant1 2390.0 -43.99 2.0051.27PEAK 74 PASS Ant1 2390.0 -52.85 2.0042.40AV 54 PASS 2480 Ant1 2483.5 -41.90 2.0053.36PEAK 74 PASS Ant1 2483.5 -52.36 2.0042.89AV 54 PASS Ant1 2500.0 -41.37 2.0053.89PEAK 74 PASS Ant1 2500.0 -52.21 2.0043.05AV 54 PASS SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Page 13 of 14 Restrict-band band-edge measurements_GFSK_2402_Ant1_PEAK Restrict-band band-edge measurements_GFSK_2402_Ant1_AV SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU Page 14 of 14 Restrict-band band-edge measurements_GFSK_2480_Ant1_PEAK Restrict-band band-edge measurements_GFSK_2480_Ant1_AV

SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU Report No.: LCS200301011AEA100 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 1 of 34 FCC TEST REPORT For Shenzhen Jiayz photo industrial., Ltd 2.4G wireless microphone Test Model: BY-WM4 PRO RXU Additional Model No.: Please Refer To Page 6 Prepared for : Shenzhen Jiayz photo industrial., Ltd Address : A16 Builing, Intelligent Terminal Industrial Park of Sililcon Valley Power, Guanla, Longhua District, Shenzhen, China Prepared by : Shenzhen LCS Compliance Testing Laboratory Ltd. Address : 101, 201 Bldg A & 301 Bldg C, Juji Industrial Park Yabianxueziwei, Shajing Street, Baoan District, Shenzhen, 518000, China Tel : (+86)755-82591330 Fax : (+86)755-82591332 Web : www.LCS-cert.com Mail : [email protected] Date of receipt of test sample : March 14, 2021 Number of tested samples : 2 Sample No. : 200301011A-1, 200301011A-2 Serial number : Prototype Date of Test : March 14, 2021 ~ May 24, 2021 Date of Report : May 24, 2021 SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU Report No.: LCS200301011AEA100 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 2 of 34 FCC TEST REPORT FCC CFR 47 PART 15 C(15.247) Report Reference No. ...................... : LCS200301011AEA100 Date of Issue ........................................ : May 24, 2021 Testing Laboratory Name ................. : Shenzhen LCS Compliance Testing Laboratory Ltd. Address ................................................ : 101, 201 Bldg A & 301 Bldg C, Juji Industrial Park Yabianxueziwei, Shajing Street, Baoan District, Shenzhen, 518000, China Testing Location/ Procedure ................ : Full application of Harmonised standards ■ Partial application of Harmonised standards □ Other standard testing method □ Applicant’s Name ............................... : Shenzhen Jiayz photo industrial., Ltd Address ................................................ : A16 Builing, Intelligent Terminal Industrial Park of Sililcon Valley Power, Guanla, Longhua District, Shenzhen, China Test Specification Standard ............................................... : FCC CFR 47 PART 15 C(15.247) Test Report Form No. ........................ : LCSEMC-1.0 TRF Originator .................................... : Shenzhen LCS Compliance Testing Laboratory Ltd. Master TRF .......................................... : Dated 2011-03 Shenzhen LCS Compliance Testing Laboratory Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen LCS Compliance Testing Laboratory Ltd. is acknowledged as copyright owner and source of the material. Shenzhen LCS Compliance Testing Laboratory Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. EUT Description. ............................... : 2.4G wireless microphone Trade Mark .......................................... : BOYA, MOVO Test Model ........................................... : BY-WM4 PRO RXU Ratings ................................................. : Input: DC 5V, 0.5W Result ................................................. : Positive Compiled by: Supervised by: Approved by: Ray Yang/ Administrators Jin Wang/ Technique principal Gavin Liang/ Manager SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU Report No.: LCS200301011AEA100 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 3 of 34 FCC -- TEST REPORT Test Model............................... : BY-WM4 PRO RXU EUT......................................... : 2.4G wireless microphone Applicant............................... : Shenzhen Jiayz photo industrial., Ltd Address.................................. : A16 Builing, Intelligent Terminal Industrial Park of Sililcon Valley Power, Guanla, Longhua District, Shenzhen, China Telephone............................... : / Fax.......................................... : / Manufacturer........................ : Shenzhen Jiayz photo industrial., Ltd Address................................... : A16 Builing, Intelligent Terminal Industrial Park of Sililcon Valley Power, Guanla, Longhua District, Shenzhen, China Telephone............................... : / Fax.......................................... : / Factory................................... : / Address................................... : / Telephone............................... : / Fax.......................................... : / Test Result Positive The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Test Report No. : LCS200301011AEA100 May 24, 2021 Date of issue SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU Report No.: LCS200301011AEA100 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 4 of 34 Revision History Revision Issue Date Revisions Revised By 000 March 18, 2021 Initial Issue Gavin Liang 100 May 24, 2021 Revised Gavin Liang Note: This report is based on the report No. LCS200301011AEA. This report is invalid without the original report. SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU Report No.: LCS200301011AEA100 This report shall not be reproduced except in full, without the written approval of Shenzhen LCS Compliance Testing Laboratory Ltd. Page 5 of 34 TABLE OF CONTENTS 1. GENERAL INFORMATION .................................................................................................................................. 6 1.1. DESCRIP…

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SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU _______________________________________________________________________________________________ 4. TEST SETUP PHOTOGRAPHS Photo of Radiated Measurement (Below 1G) Photo of Radiated Measurement (Above 1G) SHENZHEN LCS COMPLIANCE TESTING LABORATORY LTD. FCC ID: 2ARN3-WM4PRORXU IC: 26803-WM4PRORXU _______________________________________________________________________________________________ Power Line Conducted Emission