| Pin | Signal | Description |
|---|---|---|
| 1,4 | Vcc+ | |
| 2 | Tx | |
| 3 | Rx | |
| 5 | Gnd |
Both Vcc pins have to be connected (in fact vcc seems to be some enable pin).
| Pin | Signal | Description |
|---|---|---|
| 1,4 | Vcc+ | |
| 2 | Tx | |
| 3 | Rx | |
| 5 | Gnd |
Both Vcc pins have to be connected (in fact vcc seems to be some enable pin).