With rotary operation, pressure sequence changeover switch and soft locking. 2-wire connection technology (neutral conductor not required). Optimized for dimming retrofit LED lamps (LEDi). For dimmable retrofit LED lamps (LEDi). For dimmable retrofit LED lamps (LEDi) on conventional or electronic transformers For incandescent lamps, 230 V halogen lamps, low-voltage halogen lamps with conventional or electronic transformers and dimmable halogen energy-saving lamps. Mixed load operation of LEDi and conventional lamps possible. Can be switched between leading and trailing edge phase control using a selector switch. Low noise thanks to the use of MOSFET transistors. Short-circuit proof and overload proof (electronic fuse). With adjustable minimum brightness. Without central plate. Nominal voltage: 230 V~, + 10% / - 10% Nominal frequency: 50 Hz/60 Hz Nominal power: 2 - 100 W/VA (retrofit LED loads). Nominal power: 10 - 250 W/VA (non-LED loads). Can be illuminated using a glow lamp. Glow lamp included with the central plate. For conventional transformers, take into account ~20% transformer losses. For electronic transformers, take into account ~5% transformer losses.