LED dimmer with rotary operation. Without spreader. Very low installation depth: < 20 mm pressure sequence changeover switch and soft locking. 2/3-wire connection technology (neutral conductor not required). Neutral conductor can be connected optionally (recommended when connecting low loads, < 10 W/VA). 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 L: 2 - 100 W/VA (phase control) Nominal power R,C: 10-360 W/VA (phase control) Nominal power LEDi: 2-100 W/VA (phase control), 2-200 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.