AS-223 staircase automatic switch AS-223

Staircase timer is used to keep the lighting of corridors, staircases, or other objects on for a specified time, after which the lighting will be turned off automatically. Operation:
On by momentary (bell) switch  the staircase timer maintains the lighting for the time set with the knob. After the set time has elapsed, the automatic device will turn off the lighting automatically. After turning off the lighting, we can turn it on again.
Anti-blocking function  does not allow for continuous lighting of the lighting after the staircase switch is blocked, i.e. after blocking the switch (e.g. with a match), the automatic device will measure the set time and turn off the lighting. The lighting can be switched on again after the blockade has been removed. AS-223 can work with illuminated switches.