Contact expansion, inputs: 1/2-channel wiring with/without detection of shorts across contacts, outputs: 8 N/O, 1 N/C, UB = 240 VAC/DC, width: 90 mm, plug-in terminals of screw type, contact block for contact expansion in connection with safety-related control components. http://www.pilz.com Safety solutions provider since 2011, We offer Pilz