The multifunctional PSR-MXF safety relay monitors up to three safety functions in one module and is therefore particularly suitable for smaller machine applications. The relay can be used to set up safety-relevant control circuits up to PLe or SIL CL 3. The product family includes four function modules, each with three terminal variants. The two local sensor circuits can be used to monitor different safety areas in a machine. The relay also has a higher-level sensor circuit that can be used for emergency stop signals, for example.