COMPACT I/O-UNIT 6MB522/1 IN 1/2HOUSING 7XP20 FOR 6 SWITCHING DEVICES 6 DOUBLE COMMANDS 2 SINGLE COMMANDS 6 DOUBLE INDICATIONS 10 SINGLE INDICATIONS SIGNALLING-CIRCUIT VOLTAGE 24V - 250V DC 3 CURRENT INPUTS AC 3 VOLTAGE INPUTS AC 3 F.O. CONNECTION MODULES (1 X LZG/2 X PROTECTION) 2 ANALOG INPUTS DC FOR TRANSDUCER CONNECTION 0...20MA WITHOUT POWER MEASUREMENT