PNOZ e6.1p 24VDC 4n/o 2so 774192 Safety relay (standalone), inputs: 1/2-channel wiring with/without detection of shorts across contacts, outputs: 2 safetyoutputs + 1 auxiliary output of SC type, 4 N/O, automatic/monitored start, UB = 24 V DC, width: 45 mm, plug-in terminals of screw type, connection between several devices, monitoring of E-STOP, safety gates.