Multifunctional staircase lighting controller, for DIN rail, 17.5 mm wide, 1 NO contact for 16 A / 250 V AC, contact material AgSnO2, time range 0.5 to 20 min., suitable for continuous lighting, 8 programs including switch-off warning: (1): Early restart (2): Early restart of lighting time and pre-warning function (3): Early switch-off option (4): Early switch-off option and pre-warning function (5): Impulse relay/switch function (6): Continuous light. There is also a service function (ME function or MP). The MP function also includes a switch-off warning. If the button is pressed for > 5 seconds, the output contact is closed for 60 minutes. This service function can be reset by pressing the button again for > 5 seconds. The contact switches at zero voltage crossing, suitable for L and N circuits, lamp loads: incandescent and halogen lamps 3000 W, energy saving lamps 600 W, LED (230 V AC) 600 W, LV halogen lamps or LED with electronic ballast 600 W, LV halogen lamps or LED with conventional ballast 1500 W, fluorescent lamps with electronic ballast 1500 W, fluorescent lamps with conventional ballast 1000 W, connection voltage: 230 V AC