The PHOENIX CONTACT PSR-MS25-1NO-1DO-24DC-SC is a safety relay designed for emergency stop and safety door applications. It is suitable for use up to SILCL 1 (Safety Integrity Level Compact 1) - Cat. 1 (Category 1) - PL c (Performance Level c), and depending on the specific application, it can be used up to SILCL 3 - Cat. 4 - PL e. The relay supports 1-channel operation and features manual and monitored start functions. It is equipped with a fixed screw terminal block for easy and secure wiring. The relay has a U_S (Operating Voltage) of 24 V DC and includes 1 enabling current path.With its high level of safety and reliable performance, the PHOENIX CONTACT PSR-MS25-1NO-1DO-24DC-SC is an ideal choice for ensuring the safety of emergency stop and safety door systems in various industrial applications.