AS-223 staircase timer with anti-blocking, Un = 230V, 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.
The anti-blocking function does not allow the lighting to shine continuously after blocking the staircase switch, i.e. after blocking the switch (e.g. with a match), the automatic unit will measure the set time and turn off the lighting. Re-switching on the lighting can take place after removing the lock.