ABB 2CDG110090R0011 BE/S4.20.2.1 binary input, 4x, contact query, REG

The device queries 4 potential-free contacts with internally generated interrogation voltage. The input state is displayed via 4 yellow LED’s. Binary inputs enable a total of 4 input signals (in 2 groups). Each channel has a button for manual operation. The devices are used by ABB i-bus® supplies and does not require additional power supply.