Power amplifier board size: 7.1x4.3CM
Fixed hole distance: 6.6x3.8CM
Bluetooth 5.0, support serial port to change the name and password
Support button shutdown / boot, support serial port to change the tone volume and off, support call off, power on, default volume maximum
TX, RX, GND: TTL serial port configuration 9600, N, 8, 1
Output maximum power 2x15W at 16V 4A
Output maximum power 2x10W at 12V 4A
DC8-22V power supply with reverse connection protection, support for laptop power adapter
M+ and M- are the positive and negative poles of the microphone