AS-221T staircase automatic switch AS-221T

Purpose:
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
The staircase timer activated with a momentary (bell) switch maintains the lighting for the time set by the potentiometer (from 0.5 min. to 10 min.), after which the brightness of the lighting is reduced by half for about 30 s. Only after this time the lighting will be switched off completely (sudden darkness is avoided, there is still time to reach the switch safely). During the reduced brightness, another switch signal will turn the lighting back on to full brightness.

AS-221T cannot work with fluorescent lamps, compact fluorescent lamps and other lamps with electronic starters.