FCC ID: 2A3AVMX5 Wireless Microphone MX5

Wireless Microphone MX5 User's manual English Transmitter Interface Description A: Fixing clip: can be quickly installed to the required fixed position. B: External microphone socket: Insert the microphone into this socket and insert it in place. C: External audio input interface: the audio signal can be input through the adapter. D: TYPE-C charging interface. E: Built-in microphone: the product supports recording with built-in microphones, or through external microphones. F: Code matching indicator: The blue light flashes slowly when the transmitter and receiver are not matched, and the blue light is always on after the code is successfully matched. G: Switch machine button:

#1: Turn on: Long press this button to turn on the product, and the button position will be green.

#2: Power off: Long press this button after power on, and the code indicator will flash blue quickly, which means the product has entered in the off state, you can release your finger. H: Charging indicator/power indicator:

#1: The red light is always on in the charging state, and the green light is always on when the battery is full.

#2: This indicator does not light up in the normal voltage range of the product after starting up. When the battery power is low, the red light flashes slowly.

|: Mute button: The product is in the recording state. Press this button to enter the mute mode, and the receiver cannot output audio signals. J: Code pairing button: After booting, press this button to enter the code pairing mode, and the blue light of the code pairing indicator will flash quickly. Rite :616*110mm im : 88*%*110mm Receiver Interface Description K: Fixing clip: can be quickly installed to the required fixed position. L: Audio signal output port: The port output audio signal can be connected to a camera or mobile phone for recording. M: Audio signal monitoring interface: you can insert headphones to monitor the sound quality of the recording in real time. N: TYPE-C charging port. O: Code matching indicator: The blue light flashes slowly when the transmitter and receiver are not matched, and the blue light is always on after the code is successfully matched. P: Switch machine button:

#1: Turn on: Long press this button to turn on the product, and the button position will light up in green.

#2: Power off: Long press this button after power on, and the code indicator will flash blue quickly, which means the product has entered in the off state, you can release your finger. Q: Charging indicator/power indicator:

#1: The red light is always on in the charging state, and the green light is always on when the battery is full.

#2: This indicator does not light up in the normal voltage range of the product after it is turned on. When the battery power is low, the red light flashes slowly. R: Volume + button: product recording status, you can press this button to increase the volume of the recording. S: Volume-button/code matching button:

#1: Volume reduction function: After the product is turned on, it enters the recording state, you can press this button to adjust the volume reduction of the recording.

#2: Code matching function: When the product is turned on, long press the volume "

enter the code matching mode, and the code matching indicator blue light flashes quickly. button to Technical Parameter Microphone Sensitivity Microphone Directivity 48KHz*16bit Capacitive Sampling omnidirectional Rate Signal to 3.3-V Noise Ratio o0db Max100mA Distortion 0.5% @1KHz Working Voltage Working Current Ambient _ Dynamic demperalure Frequency Charging Range eenaegene Sending and Receiving Distance about 2 hours Working Transmitting

-10~18db about 5 hours Power Time Becolsing -80db Size 50*50*21mm Sensitivity Frequency Response Range Transmitter 40g/

Receiver 30g 20Hz-20KHz Net Weight Product Features 1. 2.400-2.483GHZ, ISM band/GFSK modulation. 2. Support 3Mbps RF audio data transmission. 3. Support 48KHZ/16bit/single channel audio sampling. 4. The minimum audio delay is 12.5ms. 5. Awide range of applications: such as news interviews, film and television shooting, character interviews, program hosts, teaching training and other film and television recording, as well as connection to mobile phone recording. 6. With real-time return monitoring interface, you can connect headphones to monitor the recording effect. 7. Professional circuit structure, strong anti-noise interference ability. 8. The product has a built-in microphone and an external microphone port. The external microphone has a small collar holder, which can be easily and quickly fixed on the chest clothes, allowing users to use it more flexibly and conveniently. 9. The recording sound quality is clear and the sound quality is excellent, which brings users the ultimate recording experience. Troubleshooting Receiver no 1. Power on and restart signal/noise 2. Check whether the battery power is insufficient Distorted voice when Check whether the microphone head or external microphone g loudly cable is damaged 1. Check if the volume is adjusted to the minimum 2.Whether the microphone head or external microphone cable is damaged Silence / minimal sound Short wireless Whether the surrounding environment is too complicated, use distance WIFI, Bluetooth interference is too much Battery life is short 7 . Check whether the microphone head or external microphone Wind noise ;

cable is damaged Product Use Method Steps 1. The product factory package has already paired and connected the transmitter and receiver by default. Check the battery capacity and replace the lithium battery If the product is not paired, please refer to the above (product interface description) method for pairing. 2. Insert the 3.5 audio 3P male external microphone into the external microphone socket, please refer to the above (product interface description) to find the correct position. 3. If you need the built-in microphone for recording, you don't need to connect an external microphone. 4. To find the location of the audio signal monitoring interface, please refer to (Product Interface Description) plug in headphones to monitor the sound quality of the recording in real time. 5. To find the location of the audio signal output interface, please refer to (Product Interface Description). 6. Insert the audio signal output interface into the 3.5 audio 3P male to 3.5 audio 3P elbow cable, which can be connected to the camera for recording. 7. Insert the audio signal output interface into the 3.5 audio 3P male to 3.5 audio 4P elbow cable, which can be connected to the phone for recording. 8. The recording transmitter can touch the mute button to enter the mute mode, and the receiving end cannot output audio signals. For the position of the button, please refer to (product interface description). 9. The output receiver can adjust the volume of the output terminal through the volume +- button. For the position of the button, please refer to (product interface description). 10. Find the external audio input interface. The product supports external audio input. For the interface, please refer to (Product Interface Description) to find the correct location. The audio signal can be input through the 3.5 audio 3P male to 3.5 audio 3P elbow cable adapter, and the receiver synchronously outputs the audio signal of the audio input. FCC warning:

1. 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. 2. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 3. 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. lIncrease 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 should be installed and operated with minimum distance 5 cm between the radiator&your body. Matters Needing Attent 1: This product is a precision electronic device. Avoid rain or heavy falls. If water enters accidentally, please hand it over to professional technicians. 2: Please turn off the product when it is not used for a long time. 3: It should be stored in a dry and clean place. Avoid storage or use in places with high temperature, high humidity and strong magnetic fields. 4: Do not use this product while charging. 5: The transmission distance is affected by the interference intensity: 50 meters without interference, and about 15 meters with strong interference or obstruction. ed cere]

1: Transmitter *1PCS 2:Receiver *1PCS 3: 3.5 audio 3P male to 3.5 audio 3P elbowline *1PCS 4: 3.5 audio 3P male to 3.5 audio 4P elbowline *1PCS 5: 3.5 audio 3P male head microphone *1PCS 6: TYPE-C Cable *1PCS 7:Productmanual *1PCS

Chongqing Qinchengxing Technology Co., Ltd C5266091_X10_Ed.2 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Subject: Request for Confidentiality FCC ID: 2A3AV-MX5 To Whom It May Concern, Date: Sep 27, 2021 Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules

(47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits ID Label/Location Attestation Statement External Photos Block Diagram Schematics Test Report Test Setup Photos Users Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) SDR Software / Security Info Long-Term Confidentiality No No No Short-Term Confidentiality NOTE 2 No No No No NOTE 1 NOTE 1 No No No No No No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are the equipment. The public considered as proprietary information in operation of disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. short-term Confidentiality, the applicant requests the exhibits selected In case of above are withheld from public view for a period of ______ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. 1/1 C5266091_X10_Ed.2 Sincerely, Signature:

Name: Romeo Luo Title: Development Director 1/1

Chongqing Qinchengxing Technology Co., Ltd No.868 Chuangxin Avenue, Zitong Street, Tongnan District, Chongqing, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 To whom it may concern:

2022.05.09 We, the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2A3AVMX5 including the signing of all Any and all acts carried out by Eurofins Product Service GmbH on our behalf shall have the same effect documents related to these matters. as acts of our own. By signing this application form, we agree to Eurofins current valid General Terms and Conditions

(AGB),Testing and Certification Regulations (PZO) which can be viewed on following website www.eurofins.de/ee or retrieved on request. We also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Sincerely, Name/Title Company:

Address:

Phone:

Fax:

E-Mail:

Romeo Luo/manager Chongqing Qinchengxing Technology Co., Ltd No.868 Chuangxin Avenue, Zitong Street, Tongnan District, Chongqing, China 0755-29973977

romeo@yelangu.cn

Chongqing Qinchengxing Technology Co., Ltd No.868 Chuangxin Avenue, Zitong Street, Tongnan District, Chongqing, China CONFIDENTIALITY REQUEST for Certification Service in the U.S.A. Date:2022.05.09 Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Pursuant to Paragraphs 0.457 and 0.459 of the Commissions Rules (47 C.F.R.) and Section 552(b)(4) of the Freedom of Information Act, we request confidentiality for the following products:

FCC ID Number: FCC ID: 2A3AVMX5 Model Numbers: MX5 For the product stated above, we request that the following information be held confidential:

Exhibits Long-Term Confidentiality Short-Term Confidentiality Short-Term Confidentiality Days Block Diagram(s) Schematic Diagram(s)/

Circuit Diagram(s) Circuit Description/

Operational Description/

Theory of Operation Parts List/

Bill of Materials (BOM) Tune Up Users Manual External Photos Internal Photos Test Setup Photos The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. Chongqing Qinchengxing Technology Co., Ltd No.868 Chuangxin Avenue, Zitong Street, Tongnan District, Chongqing, China If you have any questions, please feel free to contact me at the address shown below. Yours Sincerely,

<CONTACT PERSON AT FCC GRANTEE CODE>

Company:

Address:

Chongqing Qinchengxing Technology Co., Ltd No.868 Chuangxin Avenue, Zitong Street, Tongnan District, Chongqing, China 0755-29973977 romeo@yelangu.cn Phone:

E-Mail:

C5266091_X8_Ed.1 Letter of Authorization Chongqing Qinchengxing Technology Co., Ltd Company: Chongqing Qinchengxing Technology Co., Ltd Address:

No.868 Chuangxin Avenue, Zitong Street, Tongnan District, Chongqing Product Name: 2.4G wireless microphone Model Number: MX5 FCC Identifier: 2A3AV-MX5 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. is allowed to forward all Name: Romeo Luo Date: Sep 27, 2021 Title: Development Director Signature of applicant:

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