• Model 9271 - RS-232 Fiber Optic Auto Powered Line Driver KWD 75.500
• RS-232 to RS-422 Interface Converter KWD 53
• Model 62-1 RS-232 to EIA-530 Interface Converter KWD 144
• Model 365 - RS-232 to RS-422/RS-485 Interface Converter KWD 70.500
• Model 8277 - RS-232, RS-422, or RS-485 to Fiber Optic Line Driver KWD 108