MR250 USB Bluetooth Transmitter Manual

The MR250 Bluetooth 5.2 new Qualcomm QCC chip is a high-fidelity Bluetooth audio transmitter that supports the computer TV USB driver-free A2DP protocol. It has a voice function to support calls while playing games. It can convert USB output playback devices such as TVs or computers into Bluetooth signal transmitters to connect to Bluetooth speakers or Bluetooth headsets.

 

 

 Specifications

Product Name: USB Wireless Audio Transmitter

Input port: USB

Transmission distance: 10 meters (without blocking)

Bluetooth version: V5.2

Bluetooth chip: new Qualcomm QCC chip

Supported protocols: aptX Adaptive/aptX HD/aptX LL/aptX/SBC

Device power supply: USB DC 5V

Driver: driver-free, plug and play

Voice: full-duplex mode, support computer WeChat, game calls

Net weight: 2.5g

Instructions:

1. Connect MR250 to computer or OTG mobile phone;

2, automatically enter the pairing state after initialization (LED lights flashing red and blue alternately); For example, after pairing the product, it will automatically connect back within 20 seconds of disconnection, and automatically enter the re-pairing state after 20 seconds to connect the new device.

3, the need to pair the Bluetooth headset or speaker into the forced pairing state (long press the power button to enter the blue light flash or red and blue alternately, the specific instructions of the headset or speaker shall be subject to).

4. The matching protocol can be displayed intuitively after the pairing is successful (it will be enabled only when the Bluetooth headset or speaker supports the peer protocol)

SBC steady blue;

APTX adaptive steady red;

APTX LL Steady blue Flashes red twice every 5 seconds;

APTX HD, steady green;

APTX, steady blue, blinking green twice every 5 seconds;

Protocol priority: adaptive >LL >HD >APTX> SBC

Matters needing attention

This product only transmits audio devices, can connect common Bluetooth headset, Bluetooth speaker, Bluetooth audio receiver, Bluetooth power amplifier, etc., does not support connection

Mouse keyboard and transfer files.

 

Notice

If there is no sound after successful pairing, you can refer to the following Settings;

1. Check the volume of your Bluetooth headset and device;

2, PS5: set, (PS4 peripheral equipment) sound, output device, select USB ear set; Below output to headphones select all sounds;

3, Hisense TV: system Settings, audio output, select USB audio device

4, computer: Control panel, sound, playback device, set the default to USB speaker (MR250). Computer use if you do not need Mike can be in the computer microphone

Disable the microphone to avoid affecting the sound quality.

5, can not be paired:

• The Bluetooth device cannot be paired, please check the indicator to ensure that the product is within range of the paired device and in the forced pairing state (LED light flashes red and blue alternately), and the headset or speaker to be matched enters the forced pairing state and is successfully paired near the transmitter first.

• When the distance is too short or the connection is not successful, please check whether there is too much interference from 2.4G wireless devices around the environment (such as WiFi signal, wireless mouse, other Bluetooth devices, etc.).

• Please do not place the device on metal objects. When the signal is interfered with or blocked, it may also cause sound interruption/stuttering.

 

Product drive free, plug and play, if you need more Settings can be corresponding to the download computer Bluetooth assistant management, download link is as follows:

When the connected computer displays: MR250, please download:

https://www.aoyint.com/software/BTsoftware/MR250softwareV1.3.zip

Connected computer displays: AYINO MR250, please download:

https://www.aoyint.com/software/BTsoftware/AYINO_MR250.zip

In the space where there are more Bluetooth devices such as dormitors or Internet cafes, the MR250 can be bound to the Bluetooth device one-on-one through the Bluetooth assistant – binding headphones, avoiding the adapter restart to match other user devices.