CONVERTER OPTICAL FIBRE TO RS485 2CHANEL CONVERTER OPTICAL FIBRE CABLE 820NM TO RS485. LINE STRUCTURE UP TO 115KBAUD. (NOT SUITED FOR PROFIBUS APPLICATIONS). WITH RTU RING REDUNDANCY. AUXILIARY SUPPLY 24-250V DC AND 110-230V AC. WITH ALARM RELAY. CONNECT. PROTECTION RELAYS OR RTU WITH RS485 INTERFACE VIA 9POL. SUB-D-PLUG. CONNECT PC OR MODEM VIA OPTICAL FIBRE CABLE 820NM, ST-PLUG FOR OPT. FIBRE CABLE 62,5 MU-METER. FOR MOUNTING ON DIN-RAIL. METAL HOUSING.