PNOZsigma safety relay (standalone), inputs: 1/2-channel wiring with/without detection of shorts across contacts, outputs: 2 N/O,2 N/O t-d (t = 0.04 – 300 s), 1 SC, UB = 48 – 240 V AC/DC, width: 22.5 mm, plug-in spring-loaded terminals, monitoring of E-STOP, safety gates.