2 PCS XY-WRBT Bluetooth 5.0 Decoder Board Stereo Audio Module Wide Voltage Speaker Amplifier With...

1. Working voltage: 3.7~24VDC
2. Bluetooth version: 5.0
3. Transmission distance: 15 meters (visible without obstruction)
4. Signal to noise ratio: greater than or equal to 90dB
5. Distortion: less than or equal to -70dB
6. Number of channels: dual channel (stereo)
7. Audio interface: 3.5mm audio interface
8. Module protection mechanism: Power reverse connection protection
9. Interface description:
- Power supply can use Micro-USB mobile phone charger, 3.7-4.2V lithium battery, 3.7-24V DC power supply, you can choose one of the three.
- Short the "on/off contact" for 2 seconds to set the decoder board on/off. For battery-powered situations, turning off when not in use will save power and facilitate modification.