Safe safety door system, 2nd generation, safe locking with safe guard locking, in accordance with EN 60947-5-3, for applications up to SIL CL 3 and PL e. Consists of 5 elements: 1. illuminated push button for activating the safety door, 2. push button for accessing and unlocking the safety door, 3. illuminated push button, 4. illuminated push button, 5. emergency stop button. Scope of delivery: sensor unit with push buttons (spare part).