FCC ID: 2A8BQB20 Wireless Bluetooth Microphone

Power Button Keep the device away from water, moisture, solvents or other wet AXPRO B20 Dual Mic Bluetooth Microphone Device Information:

Mic #1 Mic #2 Indicator Light Content list:

1 B20 Microphone Charging cable Type-C to 3.5mm Cable Microphone Pouch Windshield Muff Storage box User Manual 1 2 3 4 5 6 7 7 5 4 6 B 2 0 B l u e t o o t h M i c r o p h o n e M a n u a l Type-C I/O Charging Battery Audio I/O 2 3 Caution:

Charge B20 Microphone:

Connect B20 Microphone via Bluetooth:

To ensure safety when using the product, the user should observe the following precautions:

Keep the device and accessories out of reach of small children and pets. Do not disassemble the device by yourself. Any unauthorized repair will void the warranty. 1 Connect B20 with the Type-C to USB charging cable, and connect to a power supply. 2 3 When B20 is charging, a steady RED light will show on the indicator. When the indicator turns to GREEN light, the battery charge is complete. Note: please fully charge the battery when you rst use B20 Microphone. surfaces. Do not expose the device to heat or direct sunlight. Only operate the device in the ideal temperature range 0C (32F) to 50C (122F). If the temperature is outside this range, unplug/power off the unit until the temperature returns to the ideal range. It is recommended that you clean the device with dry cloth to avoid accumulation of dirt. Never use soap or harsh cleaners. Do not open, damage, or expose the battery to conductive objects

(such as metal), moisture, liquids, re, or heat. Otherwise, battery uid may leak or explode, resulting in personal injury. Battery life varies with usage. If you are having trouble operating the device properly and troubleshooting does not help, contact us through ofcial@axpro.com.tw for support. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. Choking Hazard Small Parts Keep away from children and pets Use B20 Microphone:

Power on Press and hold the power button for 3 seconds till BLUE light ashes for 3 times. If the BLUE light and the RED light ash alternately, it means the B20 is waiting to be paired. If BLUE light ashes every 6 seconds, it means B20 is already paired to a device. Power off Press and hold the power button for 3 seconds till RED light ashes for 3 times. Then the indicator light is off. Power Button 1 2 3 4 5 Place B20 next to the phone within 20 inch / 0.5 m. Press and hold B20's power button for 3 seconds to turn on B20. If B20 is waiting for pairing, BLUE and RED light will ash alternatively. If B20 is already paired, BLUE light will ash every 6 seconds. Go to Bluetooth setting of the phone. Turn on Bluetooth function and search for B20. Click on B20 to connect. 6 Once the connection is complete, B20 will ash blue light every 6 seconds. Disconnect the B20:

Temporarily - press the hold B20's power button for 3 seconds to Temporarily turn off B20. The connection will be temporarily off. Press the hold the power button for 3 seconds to turn back on. The connection will resume. Permanently - go to Bluetooth setting of the phone. Click on B20 Permanently and click on Forget this device or Disconnect. Bluetooth Bluetooth MY DEVICES B20 connected Troubleshooting:

LED Indicators:

FCC Warning The DualMic APP :

If you encounter problems when using the B20, please follow the steps in the table below before contacting technical support. Problem Cause Solution I cannot turn on B20. The battery is low. There is no sound. The device doesn't pair with B20. Charge B20 with supplied charging cable for at least 2 hours. Restart device's Bluetooth and pair with B20. Wait for 5-10 seconds to see the result. The Bluetooth connection is unstable. Keep transmission distance within 15 meters. Wall or building blocked the signal. Make sure the recording area is clear. There is too much ambient noise. The ambient noise is too loud. The device cannot nd B20. B20 is connected with another device. Use DualMic App, increase Gain and record again. Permanently disconnect B20 from another device. B20 is connected but it cannot record. The microphone of B20 is not connected successfully. Restart device's Bluetooth and pair with B20. B20 constantly disconnects from the device. External earphone /

microphone is attached but not in function. The battery is low. Charge B20 with supplied charging cable for at least 2 hours. B20 doesn't detect external earphone /

microphone. Remove the Type-C to 3.5mm adapter cable and reinsert to B20. Indicator Status Red light ashes for 3 times. Blue light ashes for 3 times. Steady red light. Power off Power on Charging Steady green light. Fully charged Blue light ashes every 6 seconds. Paired Blue light and red light ashes alternatively. Waiting for pairing Red light ashes. Battery power below 10% (require charging) Specications:

Model number: B20 Weight: 16g Bluetooth distance: 15 meters (49 feet) line of sight. Microphone type: Omnidirectional Frequency range: 25 ~ 22KHz (microphone sensor) Sensitivity: -37dB 1dB S/N ratio : 66dB Built-in battery: 170 mAh Charge time: <2 hours Input voltage: 5V Charging port: USB-C Voltage range : 1.65V ~ 3.6V 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. Any Changes or modications 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. The device has been evaluated to meet general RF exposurerequirement. The device can be used in portable exposure condition without restriction. Download the APP to utilize all functions of the device. Search DualMic in the app store or scan the QR code below to download the app. Android iOS Thank you for purchasing our product. We appreciate your trust in AXPRO. Hope our products will keep meeting your expectations. Feel free to contact us through our customer support at ofcial@axpro.com.tw. Find more information, please visit AXPRO website. AXPRO Technology Inc. AXPRO Technology Inc. 9F., No. 217, Sec. 3, Beixin Rd., Xindian Dist., New Taipei City 231633, Taiwan www.axpro.com.tw www.axpro.com.tw Find more information, please visit AXPRO AXPRO website. Made in Taiwan AXPRO B20

#1

#2 Type-C /

1 B20 Type-C 3.5mm 2 3 5 4 6 1 2 3 4 5 6 7 7 B 2 0 B l u e t o o t h M i c r o p h o n e M a n u a l B20 B20 B20 2 B20 5-10 B20 B20 15 B20 B20 B20 B20 B20

B20 /

DualMic APP

( Gain ) B20 B20 5-10 B202 Type-C 3.5mm B20

B20 :

B20 0C (32F) 50C (122F) official@axpro.com.tw

LED 6 10%

axpro B20 16 15 49 25~22KHz

-37dB 1dB 66dB 170

<2 5V USB-C 1.65V 3.6V 1 2 3 4 5 B20 20 / 0.5 B20 3 B20 B20 B20 6 B20 B20 6 B20 6 B20

B20 3 B20 3 B20

B20 Bluetooth Bluetooth MY DEVICES B20 connected 1 2 3 Type-C USB B20 B20 B20 B20 :

3 3 B20 6 B20 3 3 The DualMic APP :

APP B20 "DualMic"

Android iOS AXPRO official@axpro.com.tw AXPRO 217 9 www.axpro.com.tw Made in Taiwan

C5266091_X10_Ed.2 AXPRO Technology Inc. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 9/1/2022 Subject: Request for Confidentiality FCC ID: 2A8BQB20 To Whom It May Concern, 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 No No NOTE 1 NOTE 1 No No Short-Term Confidentiality NOTE 2 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 considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected 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: Bovis Chen Title: General Manager 1/1

AXPRO Technology Inc. Model difference statement Product Name: Wireless Bluetooth Microphone Model No.: B20, B22, B24, B26, B28 We (AXPRO Technology Inc., 9F., No. 217, Sec. 3, Beixin Rd., Xindian Dist., New Taipei City 231633, Taiwan) hereby state that all the models are the same circuit and module, except the model name. Signature:

Name: Bovis Chen Title: General Manager Tel: +886-2-27526009 Email: official@axpro.com.tw Date: 9.1.2022

C5266091_X8_Ed.1 Letter of Authorization Company: AXPRO Technology Inc. Address: 9F., No. 217, Sec. 3, Beixin Rd., Xindian Dist., New Taipei City 231633, Taiwan Product Name: Wireless Bluetooth Microphone Model Number: B20, B22, B24, B26, B28 FCC Identifier: 2A8BQB20 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, is allowed to forward all 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. Name: Bovis Chen Date: 9/1/2022 Title: General Manager Signature of applicant:

1/1