# Pinout

![](https://2367252986-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLIgtGDAvVGkCKGOJb1bR%2Fuploads%2FAtz4ojSyX8ogNpwEeHER%2FP900_Pinout.png?alt=media\&token=ec632254-c5e2-4c0a-8ccf-9d131bf5c8d2)

### **Data Port**

| **Pin**  | **Signal** | **Volt** |
| -------- | ---------- | -------- |
| 1(red)   | NC         | --       |
| 2(black) | RX         | +3.3V    |
| 3(black) | TX         | +3.3V    |
| 4(black) | CTS        | +3.3V    |
| 5(black) | RTS        | +3.3V    |
| 6(black) | GND        | GND      |

### Diagnostic Port

<table data-header-hidden><thead><tr><th></th><th width="150"></th><th></th></tr></thead><tbody><tr><td><strong>Pin</strong></td><td><strong>Signal</strong></td><td><strong>Volt</strong></td></tr><tr><td>1</td><td>NC</td><td>--</td></tr><tr><td>2(black)</td><td>RX</td><td>+3.3V</td></tr><tr><td>3(black)</td><td>TX</td><td>+3.3V</td></tr><tr><td>4(black)</td><td>GND</td><td>GND</td></tr></tbody></table>

### **Power Port**

<table data-header-hidden><thead><tr><th width="150"></th><th width="150"></th><th></th></tr></thead><tbody><tr><td><strong>Pin</strong></td><td><strong>Signal</strong></td><td><strong>Volt</strong></td></tr><tr><td>1(red)</td><td>BAT+</td><td>7-35V</td></tr><tr><td>2(red)</td><td>BAT+</td><td>7-35V</td></tr><tr><td>3(black)</td><td>BAT-</td><td>GND</td></tr><tr><td>4(black)</td><td>BAT-</td><td>GND</td></tr></tbody></table>