

Important:
Never ground pin 2 as damage to the regulator will occur.
| 8 Pin locking ring | Pin | Signal |
|---|---|---|
| 1 | Up (connect to pin 5 for Up) |
| 2 | +5v | |
| 3 | Down (connect to pin 5 for Down) | |
| 4 | Fast (connect to pin 5 for Fast) | |
| 5 | Ground & other functions | |
| 6 | PTT (connect to pin 5 for TX) | |
| 7 | Mic Ground | |
| 8 | Mic Audio |