Operating instructionsAfter turning on the power, the blue indicator light flashes quickly and enters Bluetooth mode; After broadcasting the "prompt sound", enter pairing mode and wait for pairing; Search for "XY-P15W" (amplifier board device name) through Bluetooth on your mobile phone, click on "XY-P15W" to connect, and after successful connection, play a "prompt sound". The indicator light will stay on to play mobile music, and the indicator light will flash slowly when playing music; After Bluetooth disconnection, the amplifier board is ready for the next pairing and plays a "beep" to enter pairing mode and wait for pairing. Connect as shown in the following figure