The ABB BE/M4.12.1 is a 4-fold binary input plug-in module for ABB i-bus® KNX Room Controller basis devices (RC/A series). It provides four inputs for potential-free (floating) contacts with contact scanning — designed to expand room-controller I/O without a separate MDRC binary input.

Insert the module into a free slot on the Room Controller basis unit; channel configuration is handled in ETS as part of the room controller application.

Key Features

• 4 contact inputs: Floating contacts for switches and sensors.
• Room Controller module: Plugs into RC/A basis devices (e.g. RC/A4.2, RC/A8.2).
• Compact expansion: Adds binary inputs beside other RC/A actuator/input modules.

At a Glance

Specification	Detail
Product type	Room Controller Binary Input Module — 4-fold, Contact Scanning
Order code	BE/M4.12.1 (2CDG110007R0011)
Digital inputs	4 (floating contacts)
Host device	ABB Room Controller basis (RC/A)
Bus system	KNX TP via basis device

Use with Room Controller basis devices such as RC/A4.2 and RC/A8.2.