| Pin | Name | Dir | Description | 
|---|---|---|---|
| 1 | GND | Ground | |
| 2 | GND | Ground | |
| 3 | GND | Ground | |
| 4 | CMTOUT | Sound Output | |
| 5 | CMTIN | Sound Input | |
| 6 | REM+ | Remote control (from relay) | |
| 7 | REM- | Remote control (from relay) | |
| 8 | GND | Ground | 
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