"This Varilight dimmer is really ideal for all purposes. I originally puchased it to dim a low voltage light, working on 12volt halogen bulbs powered by a transformer. These work very well and the light turns on and powers up which is particularly pleasant. They are very smooth and adaptable. The only think it will not do is dim undimmable LED lights, but the that is totally impossible at this time."
"I Bought 6 of these due to standard dimmers giving a high frequency flicker to the lights along with a quite annoying humming.
The soft start function is nice however the reliablity has been poor. 3 have failed, 2 with the push switch failing and the other lost its dimming ability. Also beware that their is a noticable loss of brightness to the LED lights when compared to a normal dimmer/switch
The store has replaced all 3 with no fuss so top marks to Screwfix"