Further information for ABB BE/S8.20.2.1 - BE/S 8 20 2 1 Binary Input 8F Scanning
The device queries 8 potential-free contacts with internally generated query voltage. The input status is displayed via 8 yellow LEDs. The binary inputs enable the detection of 8 independent input signals. The devices have a button for manual operation on each channel. The devices are powered via the ABB i-bus® and do not require an additional power supply.