Serial Port
Pinout[edit]

| Pin | Function |
|---|---|
| 1 | CTS |
| 2 | GND (0V) |
| 3 | RTS |
| 4 | TXD |
| 5 | RXD |
The pin numbers and functions are given for the Smart Box as a DCE, so when connected to a computer (which is a DTE) you should the connect pins directly, i.e. TXD on the Smart Box connects to TXD on the PC, RXD on the Smart Box connects to RXD on the PC etc.
PC[edit]

| Pin | Function |
|---|---|
| 1 | |
| 2 | RXD |
| 3 | TXD |
| 4 | |
| 5 | GND (0V) |
| 6 | |
| 7 | RTS |
| 8 | CTS |
| 9 |