For incandescent lamps and 230 V halogen lamps. (Phase control). With push-to-change switch. To be completed with: Central plate with rotary knob System M MEG5250-03../-04../-06.. Central plate with transparent cover and rotary knob M-Creativ MEG5250-3500. Central plate with rotary knob System Design MEG5250-60.., System Area MEG5250-40../-41../-42.. Note: Information on dimming LED lamps is available on the Internet at Merten Dimmertest. http://www.merten.de/Dimmer-Test.dimmertest.0.html. Version: 40-400 W.