| Pin | Name | Description |
|---|---|---|
| 1 | -SP | -Speaker |
| 2 | key | Key |
| 3 | GND | Ground |
| 4 | +SP5V | +Speaker +5 VDC |
If you did publish instruction for Do-It-Yourself device with this pinout, share the link with us.
| Pin | Name | Description |
|---|---|---|
| 1 | -SP | -Speaker |
| 2 | key | Key |
| 3 | GND | Ground |
| 4 | +SP5V | +Speaker +5 VDC |