For electronic transformers and light bulbs (ohmic load). (Phase cut-off). With pressure changeover switch. Hum-free, short-circuit-proof, with overload protection, lamp-friendly soft start. To be completed with central plate with rotary knob System M MEG5250-03xx/-04xx/-06xx Central plate with transparent cover and rotary knob M-Creativ MEG5250-3500. Central plate with rotary knob System Design MEG5250-60xx, System Area MEG5250-40xx/-41xx/-42xx Note Suitable for Merten MET transformers. Version 20-315 W.