Very low installation depth: < 20 mm Without spreader. 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. With manually adjustable operating mode: leading edge / trailing edge. With adjustable minimum / maximum brightness. Low noise through the use of MOSFET transistors. Short-circuit proof and overload proof (electronic fuse). Without central plate. Nominal voltage: 230 V~, + 10 % / - 10 % Nominal frequency: 50 Hz/60 Hz Nominal power: 2 - 100 W/VA (phase control) Nominal power: 2 - 400 W/VA (phase control) Can be illuminated using a glow lamp. Glow lamp included with the central plate. For conventional transformers, allow for ~20 % transformer losses. For electronic transformers, allow for ~5 % transformer losses.