The PHOENIX CONTACT part 2904951 is a safety relay designed for use with emergency stop and safety doors. It is capable of achieving SILCL 1 - Cat. 1 - PL c safety levels, and depending on the application, it can provide up to SILCL 3 - Cat. 4 - PL e safety levels. This relay is designed for 1-channel operation and features manual and monitored start functionality. It also has 1 enabling current path and operates with a supply voltage of 24 V DC. The relay is equipped with a fixed screw terminal block for easy installation.