PNOZsigma safety relay (standalone), inputs: incremental encoder, proximity switch, outputs: 2 NO, 2 NC, UB = 24 - 240 V AC/DC, width: 45 mm, monitoring of standstill, speed, speed range, position, direction of travel, analogue voltage (track S), display operation push & turn, plug-in screw terminals, expansion with PNOZsigma contact expansion.