used for the monitored connection of sensors from security technology (e.g. magnetic contacts or glass-breakage sensors) to the ABB i-bus® KNX. The device has four inputs (”zones“) available and can be used as a stand-alone security system or in combination with the security module or intrusion alarm panel with KNX interface. 12 V DC SELV power supply required, e.g. NTU/S 12.2000.1. Typical applications are door and window surveillance, glas-breakage detection as well as area surveillance.