| Device 1 Pin Number |
Device 1 Pin Name |
Direction | Device 2 Pin Number |
Device 2 Pin Name |
Description (may be empty) |
| 6 | Rx | 3 | TxD | Rx (RS232) and Turn Off UPS (Contact Closure) | |
| 7 | Common | 5 | GND | Common | |
| 9 | Tx | 2 | RxD | Tx (RS232) | |
| 7,6,1 | RTS,DSR,DCD | connect | |||
| 8,4 | CTS,DTR | connect | |||
| 2 |
AC Failure (Contact Closure) | ||||
| 4 |
Common | ||||
| 5 |
Battery Low (Contact Closure) |
