Kopp 803502080 Electronic dimmer Paris (trailing edge), Arctic white (tool)
+ The first I tested dimmer that absolutely no hum of itself is ... + Well finished ansich + No flickering halogen except for: g4 (20 watt) and G9 (40 watt) + 4 holes for cavity wall box (top, bottom, left, right), this is not, of course, a "Kopp ful