The CARLO GAVAZZI SMS31 Safety Relay is designed for use in safety circuits, featuring CAT4 certification for enhanced safety performance. This versatile relay is ideal for applications such as emergency stop, safety gate, limit switch, and non-contact switch monitoring. It has 3 normally open (NO) and 1 normally closed (NC) auxiliary contacts to provide flexibility in connecting various safety devices. Trust this reliable safety relay to ensure the protection of personnel and equipment in your industrial setting.