20pcs 5V Mono Stereo Bluetooth Receiver Audio Module Output Universal 7 PIN Output Interface Speaker Amplifier

Port Description 1 5V power supply connect the positive pole of the power supply the voltage range is 4 1V 5V please ensure that the power supply is within this range Exceeding this range may damage the module or cause the work to be abnormal 2 ground GDN is connected to the negative pole of the power supply which is also the ground of audio This place must be separated from the ground and the audio ground separately 3 Left channel Connect the left channel input of the power amplifier board or the left channel of the earphone It is recommended to connect a capacitor to the output port depending on the input matched by the power amplifier 4 Right channel Connect the right channel input of the power amplifier board or the right channel of the earphone It is recommended to connect a capacitor to the output port depending on the matching input of the power amplifier 5 mute output port the port is preset to a high level when the mute the port outputs a low level 6 Status indicator When the Bluetooth is not connected the light flashes quickly and once the Bluetooth connection is successful it will flash slowly 7 Reserved port The port has been pulled up to 5V When the port is triggered by a low level it will be turned off When the port is turned back to the low level again Please Note From the Bluetooth audio module to the power supply or to the audio interface please use the soldering method do not use the way of plugging the contact resistanc