4-conductor circuit, L-momentary contact

4 conductors are installed within the building. The timing interval is started with a phase L. During the runtime, the device can be reset at any time, i.e. the runtime restarts.

3-conductor circuit, N-momentary contact

3 conductors are installed within the building. The timing interval is started with the neutral conductor. During the runtime, the timer can be reset at all times. However, this switching no longer corresponds to DIN VDE 0110 T460. It is only still in use in old installations.

3-conductor circuit, L-momentary contact

3 conductors are installed within the building. The timing interval is started with a phase L. No resetting is possible during the runtime as the pushbutton's input and output are exposed to the same potential during the runtime. The glow lamps are switched off during the runtime.

High setting accuracy

The electronic remote control switch works very accurately. The setting can be made every +30 seconds. The factory settings ensure reliable setting of the 1 and 10-minute limit values.

Useful continuous contact

If pushbuttons jam, a so-called pushbutton malfunction, this does not damage the devices but produces a steady light. This feature can be used (e.g. by caretakers of properties) to switch to a permanent steady light in the event of moving house or emergencies.

Short-circuit strength

Stairwell lighting timers are primarily used for the switching of incandescent lamps, which may occasionally be subject to short-circuits during operation.