AS-214 staircase timer Un = 24V, I = 16A, 1 module

The staircase timer is used to keep the lighting of corridors, staircases or other objects on for a specified period of time, after which the lighting will be turned off automatically.
Action
Activated by a momentary (bell) switch, the staircase timer maintains the lighting for the time set by the knob. After the set time has elapsed, the automatic unit will turn off the lighting automatically. After turning off the lighting, we can turn it on again.