Interface: RS-232: Pins 2 and 3, Transmit and Receive data, switch selectable. Pins 7, RTS, tied to Pin 8, CTS. Pins 6 (DSR), 1 (DCD) and Pin 4, (DTR) are connected together
   RS-485: Conforms to RS-485
   RS-422: Conforms to RS-422
Connectors: RS-232: DB9; RS-485 /RS-422: 5 position terminal block
Indicators: LCD for TD, RD, RTS, CTS, DCD, DTR, DSR
Switches: DTE/DCE switch selectable for reversing TD and RD; 5 position dip switch: set RS-485 2 or 4 wire, RS-422 and termination
Data Rate: 0 to 230 KBPS
MTBF: 596,000 Hours (68 Years)
Power: 115 Volts, 60 Hz (220 Volts, 50 Hz optional) via adapter
Size: 3" W x 4.5" H x .89" D (76.2 mm x 114.3 mm x 22.5 mm)
Environment: 0°C to 50°C, 0% to 95% humidity