Rievtech xLogic ELC Series User Manual page 336

Up to now two methods were known to control such a lighting system:
Pulse relay: When the lights are off, press any of the pushbuttons to switch on the lights. When the

lights are on, press any of the pushbuttons to switch off the lights again.
Disadvantage: People often forget to switch off the lights
Automatic stairway light switch: Press any one of the pushbuttons to switch on the lights. The lights

switch off again automatically when a preset off delay time has expired.
Disadvantage: You can't keep the lights switched on over an extended period of time. The permanent on
switch, usually installed inside the stairway lighting timer unit, may be difficult or impossible to access.
The wiring is the same for both systems.
xLogicSoft solution
The xLogic system can replace the automatic stairway light switch or the pulse relay.
xLogic also lets you create a simple automatic stairway light switch via the stairway light switch SFB.
You can also implement both functions (off delay timer and pulse relay) in a single unit. What is more,
you can incorporate extra functions without making any alterations to the wiring. In our example
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