The ASP-02 staircase automatic switch is used to control lighting in corridors or staircases. After the system is triggered, it turns on the lighting for the time set by the user, followed by automatic shutdown. The working time can be smoothly adjusted with a potentiometer in the range from 10 s to 14 min. The machine is equipped with an anti-blocking function. The ASP-02 can also be used as a time relay with a delayed switch-off function. The design allows for mounting under a button in a deep 60 mm installation box.