GCS 1x56 AB 72 Change-Over, 56 Channels

Change over of 56 I/O-Ports to port A or B 2-pole-relais, 19", 3 HU-rack 1 power supply/control unit 7 relais cards by 8 channels Upgradable in steps of 8 up to 72 channels I/O Port: D-Sub 25-pol female Port A, B: D-Sub 25-pol male 2 RS-485 interfaces: D-Sub 9-pole, male