Safety with the switch off-advance warning (blinking of lights). Extension of the illumination time by sensor operation. Light saving switch-on in voltage zero crossover (longer durability). Can also be used as a surge switch (3 programs). The device has the following programs: BE: Early restart of the illumination time. Time restart with sensor operation (opening) is possible during the time lapse of the preset time. BP: Early restart of the illumination time & pre-warning function (Blinking of the bulb). Time restart with sensor operation (opening) is possible during the time lapse of the preset time & a 20 second advance warning time. IT: the output contact closes on sensor operation. During the time lapse, the illumination can be switched off prematurely. IP: Early switch-off option & advance warning function. It is possible to switch off the illumination prematurely during the time lapse of the preset time & before the deployment of the deactivation warning device. RI: Surge switch (ON & OFF switch by sensor operation). ON: continuous light With the continuous light function the output contact remains closed without being dependent on sensor operation. Module design for 3.5cm. DIN-rail assembly.