Single-channel contact extension featuring a T-BUS interface, equipped with four Normally Open (N/O) contacts, one Normally Closed (N/C) contact, and a confirmation current path. It allows setting a dropout delay ranging from 0.5 to 30 seconds. The device is Category 3 compliant and meets PL d according to EN ISO 13849 standards. It includes plug-in screw terminal blocks and has a width of 22.5 mm.