1. Introduction
The BOYA BY-WM3T2 series is a mini 2.4GHz wireless microphone system designed to deliver high-quality audio for various applications, including live streaming, vlogging, course recording, and other audio capturing needs. This manual provides detailed instructions for the setup, operation, and maintenance of your BY-WM3T2 wireless microphone system.
The BY-WM3T2 series offers several models, each tailored for specific device compatibility:
- BY-WM3T2-U1/U2: Compatible with most Android devices featuring USB-C ports (smartphones, tablets).
- BY-WM3T2-D1/D2: Designed for Apple iOS devices with MFi Certified Lightning output (iPhone, iPad, iPod).
- BY-WM3T2-M1/M2: Intended for cameras and other devices equipped with a 3.5mm jack.
Models ending in '1' (e.g., U1, D1, M1) include one transmitter and one receiver, suitable for single-person recording. Models ending in '2' (e.g., U2, D2, M2) include two transmitters and one receiver, allowing for simultaneous recording of two sound sources.
2. Package Contents
Please check the contents of your package to ensure all items are present based on your specific model:
2.1 BY-WM3T2-U1 (Type-C)
- BY-WM3T2-U1 Receiver x1
- BY-WM3T2-TX Transmitter x1
- USB-C Charging Cable x1
- Foam Windscreen x1

2.2 BY-WM3T2-U2 (Type-C)
- BY-WM3T2-U2 Receiver x1
- BY-WM3T2-TX Transmitter x2
- USB-C Charging Cable x2
- Foam Windscreen x2
2.3 BY-WM3T2-D1 (Lightning)
- BY-WM3T2-D1 Receiver x1
- BY-WM3T2-TX Transmitter x1
- USB-C Charging Cable x1
- Foam Windscreen x1

2.4 BY-WM3T2-D2 (Lightning)
- BY-WM3T2-D2 Receiver x1
- BY-WM3T2-TX Transmitter x2
- USB-C Charging Cable x2
- Foam Windscreen x2
2.5 BY-WM3T2-M1 (3.5mm Jack)
- BY-WM3T2-RX35 Receiver x1
- BY-WM3T2-TX Transmitter x1
- USB-C Charging Cable x2
- Foam Windscreen x1

2.6 BY-WM3T2-M2 (3.5mm Jack)
- BY-WM3T2-RX35 Receiver x1
- BY-WM3T2-TX Transmitter x2
- USB-C Charging Cable x3
- Foam Windscreen x2
3. Product Overview
Familiarize yourself with the components of your BY-WM3T2 system:

3.1 BY-WM3T2-RX35 Receiver (for M1/M2 models)
- USB-C Charging Port: For charging the receiver.
- Power Button: To turn the unit on/off.
- 3.5mm TRS Connector: For connecting to cameras or devices with a 3.5mm jack.
- Status Indicator: Displays connection and battery status.
3.2 BY-WM3T2-TX Transmitter (all models)
- Built-in Mic: Omnidirectional microphone for audio capture.
- Belt Clip: For attaching the transmitter to clothing.
- Status Indicator: Displays connection, battery, and noise cancellation status.
- Power/Mute Button: To turn the unit on/off and mute/unmute the microphone. Double-click to activate/deactivate noise cancellation.
- USB-C Charging Port: For charging the transmitter.
4. Setup Guide
The BY-WM3T2 series features automatic pairing for ease of use. Follow these steps to get started:
- Charge the Transmitter (TX): Before first use, fully charge the transmitter using the provided USB-C charging cable. The TX has a built-in rechargeable battery providing up to 10 hours of runtime.
- Connect the Receiver (RX):
- For -U1/-U2 (USB-C): Plug the USB-C receiver directly into your Android smartphone or tablet's USB-C port.
- For -D1/-D2 (Lightning): Plug the Lightning receiver directly into your Apple iOS device's Lightning port.
- For -M1/-M2 (3.5mm Jack): Plug the 3.5mm TRS receiver (RX35) into the 3.5mm microphone input jack of your camera or recording device.
- Power On the Transmitter (TX): Press and hold the Power/Mute button on the transmitter until the status indicator lights up.
- Automatic Pairing: Both the transmitter and receiver will automatically pair after powering on. The status indicators will show a stable light once connected.
- Ready for Use: Once paired, the system is ready to record. No additional tedious operations are required.

5. Operation
5.1 Power On/Off and Mute
- Power On: Press and hold the Power/Mute button on the TX transmitter.
- Power Off: Press and hold the Power/Mute button on the TX transmitter.
- Mute/Unmute: Short press the Power/Mute button on the TX transmitter to mute or unmute the microphone.
5.2 Noise Cancellation
The BY-WM3T2 features smart noise cancellation technology to reduce ambient noise and provide clear audio.
- Activate Noise Cancellation: Double-click the Power/Mute button on the TX transmitter.
- Deactivate Noise Cancellation: Double-click the Power/Mute button again.
- Indicator: When the indicator blinks blue slowly, the noise cancellation mode is active.

5.3 Charging
- Transmitter (TX): The TX has a built-in rechargeable battery with up to 10 hours of runtime. Charge it using the provided USB-C cable. A full charge takes approximately 2 hours.
- Receiver (RXU/RXD): For -U1/-U2 and -D1/-D2 models, the receiver can charge your smartphone simultaneously via its Type-C charging port while in use. This ensures uninterrupted operation during long sessions like live streaming.


5.4 Transmission Range
The BY-WM3T2 system utilizes 2.4GHz wireless technology, providing a stable transmission range of up to 50 meters (without obstacles). This technology automatically hops channels to avoid static noise and audio dropouts.

6. Compatibility
The BY-WM3T2 series offers broad compatibility with various devices:
- BY-WM3T2-U (USB-C models): Compatible with most Android smartphones and tablets with USB-C ports.
- BY-WM3T2-D (Lightning models): Compatible with Apple iOS devices (iPhone, iPad, iPod) with Lightning ports.
- BY-WM3T2-M (3.5mm Jack models): Compatible with cameras, recorders, mixers, and other devices featuring a 3.5mm TRS jack.



7. Specifications
| Feature | Specification |
|---|---|
| Transmission Type | 2.4GHz |
| Polar Pattern | Omnidirectional |
| Frequency Response | 20Hz-16kHz |
| Signal-to-Noise Ratio (SNR) | 77 dB |
| Sensitivity | -42 dB |
| Sampling Rate | 48kHz |
| Bit Depth | 16bit |
| Transmission Range | 50m (without obstacle) |
| RF Output Power | 6dbm |
| TX's Battery Life | 10 hours |
| Battery Capacity | TX: 95mAh |
| Charging Port | USB-C |
| Dimensions (TX) | 52x17.5x15.6 mm |
| Dimensions (RXU/RXD) | 46x26.2x9 mm |
| Dimensions (RX35) | 53.7x36.2x13.5 mm |
| Weight (TX) | 8.5g (0.30 oz) |
| Weight (RXU/RXD) | 5g (0.18 oz) |
| Weight (RX35) | 10.5g (0.37 oz) |

8. Troubleshooting
- Q: The microphone is not recording audio or the sound is distorted.
- A:
- Ensure both the transmitter (TX) and receiver (RX) are powered on and successfully paired (check status indicators).
- Verify the receiver is correctly plugged into your recording device (smartphone, tablet, camera).
- Check your device's audio input settings to ensure the external microphone is selected.
- Ensure the transmitter is not muted. Short press the Power/Mute button to toggle mute status.
- Check the battery level of the transmitter. Recharge if necessary.
- Ensure you are within the 50m operating range and there are no significant obstacles or interference sources.
- Q: Noise cancellation does not seem to be working.
- A: Double-click the Power/Mute button on the TX transmitter to activate noise cancellation. The status indicator should blink blue slowly when active. If it's not blinking, try double-clicking again.
- Q: My phone's audio is disabled when the microphone is connected.
- A: Some devices or recording applications may automatically route all audio through the external microphone, disabling the phone's internal speaker. Check your phone's sound settings or the settings within your recording app to adjust audio output preferences.
- Q: The microphone is not compatible with my specific device (e.g., Redmi 10X, Huawei P9 for charging, GoPro/Insta360).
- A:
- Some specific phone models (e.g., Redmi 10X) may have known incompatibilities with BY-WM3T2-U1/U2 models.
- Certain phones (e.g., Huawei P9) may not support simultaneous charging while the BY-WM3T2-U1/U2 receiver is connected.
- For action cameras like GoPro or Insta360, Type-C interface microphones may not be suitable. Always verify compatibility with the camera manufacturer or seller before purchase.
9. User Tips
- DJI OSMO Action Compatibility: BY-WM3T2-U models can be directly used with DJI OSMO Action2 and DJI OSMO Action3.
- Action Camera Caution: If using with GoPro, Insta360, or other sports cameras, be aware that Type-C interface microphones might not be suitable. It's recommended to confirm compatibility with the camera manufacturer or seller beforehand.
- Redmi 10X Incompatibility: BY-WM3T2-U1/U2 models are known to be incompatible with the Redmi 10X mobile phone.
- Huawei P9 Charging: The BY-WM3T2-U1/U2 cannot be used to charge the Huawei P9 phone simultaneously while recording.
10. Maintenance
- Cleaning: Use a soft, dry cloth to clean the microphone and receiver. Do not use harsh chemicals or abrasive materials.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: For optimal battery life, avoid fully discharging the transmitter frequently. If storing for extended periods, charge the battery to about 50% every few months.
- Avoid Moisture: Keep the device away from water and high humidity to prevent damage.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official BOYA website or contact your authorized dealer. Keep your proof of purchase for warranty claims.