Micro TYPE-C VHM-314 Audio Receiver Board Bluetooth-compatible 4.1 5.0 Car Speaker MP3 Lossless Decoder Stereo Music Module

1.Parameter characteristics

 

Power Supply 3.7-5V

SNR 90dB

THD+N -70dB

Crosstalk -86dB

DNR 91dB

Support Profile A2DP/AVCTP/AVDTP/AVRCP/HFP

LOS >15m

 

2.Interface details

 

USB powered Universal Micro USB 5V power supply

3.7-5V Supply Pad External 3.7-5V lithium battery power conversion

LED indicator mode long blue light

3.5mm stereo audio interface Standard 3.5mm interface, output stereo sound source, plug in headphones, connect amplifiers and other devices

 

Instructions:

 

After the power is turned on, the blue indicator lights up and enters the mode; the English The device is ready to pair is displayed, indicating that the mode is entered and waiting for pairing; the XY_BT searched by the mobile phone is the device name of the decoding board. , Click on the connection, the decoder board prompts “The device is connected successfully”, indicating that the decoder board and the mobile phone are connected successfully, you can play music. As shown below

XY-WRBT

Operation instructions

After switching on the power supply, the blue indicator flashes and enters the Bluetooth mode; after broadcasting the “prompt sound”, it enters the matching mode and waits for matching; after broadcasting the “prompt sound”, the mobile Bluetooth searches for “XY-WRBT” (the name of the power amplifier board device), clicks on the “XY-WRBT” connection, and plays the “prompt sound” after the connection is successful, and when the indicator light is long, the mobile music can be played. When playing music, the indicator light flickers slowly; after Bluetooth disconnects, the amplifier board prepares for the next pairing, and plays the “prompt tone” and enters the pairing mode to wait for the pairing.

Cautions for Power Supply with 3.7V Lithium Battery

1. When powered by batteries, the battery voltage is less than 3.3V decoder board automatically shuts down, and the contacts are switched on/off for 2 seconds after re-energizing or full charging.

2. When using batteries to supply power, if the voltage of batteries is too low, there may be “nourishing” noise. In this case, the batteries need to be charged.

3. Because there is no charge protection circuit for lithium batteries on decoder board, it is recommended to use lithium batteries with protection board.

4. If your rechargeable battery supports Micro USB charging directly, you can use Micro USB charging directly to the battery.

Instructions with remote control:

Product name	Bluetooth Decoder
Product model	XY-WRBT
Working voltage	3.7~24VDC
Bluetooth version	5.0
Transmission distance	15m (visible and unshielded)
Signal-to-noise ratio	≥90dB
Distortion	≤-70dB
Number of vocal tract	Dual Channel (Stereo)
Audio interface	3.5mm audio interface
Modular protection mechanism	Back-connection protection of power supply

1. Micro-USB mobile phone charger, 3.7-4.2V lithium battery and 3.7-24V DC power supply can be used for power supply.2. Short “on/off contact” 2 seconds can set decoder board on/off, for battery power supply, when not in use, power-saving, convenient refitting.