ComNet, universal 1-channel data transceiver for RS-232/422/485 transmission over singlemode fiber optic cable, uses 1 fiber, data up to 250 kbps, B-side, power supply not included

stand-alone, can be used in a 19" rack (uses 1 slot), universal 2-wire or 4-wire data communication, 1310/1550 nm, max. transmission distance 69 Km".