MT/S 4.12.2M KNX Security Terminal Manual

This document describes the ABB i-bus KNX Security Terminal MT/S 4.12.2M, a 4-fold MDRC device for monitored connection of security sensors like magnetic contacts and glass-breakage sensors. It details the device's functionality, including zone inputs, relay outputs, alarm types, and auxiliary power supply requirements for stand-alone or integrated security systems.