Blue-tooth 5.0 decoder board stereo Blue-tooth wide voltage speaker power amplifier XY-WRBT with remote control

Blue-tooth 5.0 decoder board stereo Blue-tooth audio module wide voltage volume adjustable speaker power amplifier

product parameters:

interface description:

1. Power supply can use Micro-USB mobile phone charger, 3.7-4.2V lithium-battery, 3.7-24V DC power supply, choose one of the three.
2. Short-circuiting the "on/off contact" for 2 seconds can set the decoder board to turn on/off. For battery-powered situations, turning off the computer when not in use saves electricity and is convenient for modification.

Operating Instructions

after the power is turned on, the blue indicator light flashes and enters Blue-tooth mode; After broadcasting the "prompt tone", enter the pairing mode and wait for pairing. The mobile phone Blue-tooth searches for "XY-WRBT" (name of power amplifier board device), click "XY-WRBT" to connect, and play "prompt tone" after the connection is successful. The indicator light will be on for a long time, and the mobile phone music can be played. The indicator light will flash slowly when playing music. After Blue-tooth is disconnected, and play the "tone" and enter the pairing mode to wait for pairing.

Precautions for using 3.7V lithium-battery power supply

1. When using battery power supply, the decoding board will automatically shut down when the battery voltage is lower than 3.3V, and the on/off contact will be shorted for 2 seconds after being powered on again or fully charged.

2. When using battery power supply, if the battery voltage is too low, "zi" noise may occur. In this case, the battery needs to be charged.

3. Since there is no lithium-battery charging protection circuit designed on the decoding board, it is recommend to use a lithium-battery with its own protection board.

4. If your rechargeable battery supports Micro USB if you charge directly, you can use it. Micro USB charge the battery directly.