Usually the CTRL pin is connected to the MUTE pin of Bluetooth.
The power amplifier board is in ACF-1 mode by default. When using the CTRL mode setting, solder R5 off.
The appearance and color of different batches , which does not affect the use.
Description
Yaregelun size: 2.1x2.1CM
Material: PCB
colour: green
Package Contents:
1 x Module
Only the above package content, other products are not included.
Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.