PNOZsigma Safety relay (standalone). Inputs: 1 N/O, 1 N/C per pushbutton. Outputs: 3 N/O, 1 N/C, 1 semiconductor UB 48 - 240 V AC/DC, width: 22.5 mm, plug-in terminals of screw type Two-hand control device, monitoring the simultaneity of a two-hand pushbutton. Aksesoris Elektronik