Safety Relay Dimensions W x H x D: 17.5 x 100 x 121.6 mm Operating temperature: -25...60 °C Design: Expansion unit Assembly type: Top Hat Rail Mounting Protection rating (housing): IP20 Service life, electric: 0.25 Mil. cycles Service life, mechanical: 10 Mil. cycles Termination type: Screw Terminal Response time: 0.06 ms