My parts list/tender specifications

BE/S4.20.2.1 Binary Input, 4-fold, Contact Scanning, MDRC

Data Sheet:

The device interrogates 4 floating contacts using an internally generated scanning voltage. State inputs via 4 LEDs. Max. 4 signals (in 2 groups) are detectable. Each channel one push button for manual operation. Supplied by ABB i-bus®.