CSRA64215 4.0 4.2 bluetooth Module HIFI Digital Amplifier External DAC Board PCM5102A Low Power APTXLL Lossless I2S

Description Amplifier board size 5 7x3 3CMWith the call function CSRA64215 low power power on the default volume of the largest 3 6 5V power supply compatible with lithium battery or 5V power supply VCC and GND for the power supply feet L G R then headphonesCOM for the key of the common the other end of the button were connected NEXT VOL PREV VOL PLYM and M are the positive and negative of the microphoneCSRA64215 supports TWS to box for APTX for APTX LL The button functions are described as follows VOL Short press to increase the volume long press to increase the volume VOL Short press to decrease the volume long press to decrease the volume continuously NEXT short press a song PREV Short press the previous song PLY Short press to play pause answer hang up long press for 1 second to reject the callSpecial function description PLY Long press for 3 seconds to force enter pairing mode long press for 6 seconds to clear the pairing list PLY VOL Press and hold for 1 second at the same time to enter the search TWS mode PLY VOL Press and hold for 1 second at the same time to enter the searched TWS mode VOL VOL Press and hold for 1 second to disconnect TWS Package Included 1 xCSRA64215 4 0 4 2 HIFI Bluetooth Module