Description:
This product MH-M18 is a low-power Bluetooth design solution, supporting the latest Bluetooth 4.2 transmission, two-channel stereo lossless playback, Bluetooth connection after the module is connected to Bluetooth, very convenient. In an open environment, the Bluetooth connection distance can be up to 20 meters.
Widely used in a variety of Bluetooth audio reception, a variety of audio DIY modification.
Function:
| Pin | Function | Description |
| 1 | KEY | Button control terminal (4 button functions, additional resistors such as wiring diagram) |
| 2 | MUTE | Mute control terminal (output high level 3.3V when muting, output low level during playback) |
| 3 | VCC | Positive power supply 5V (lithium battery 3.7V power supply requires short circuit diode) |
| 4 | GND | Power negative / audio signal ground |
| 5 | L | Left channel output |
| 6 | R | Right channel output |
