Universal LED Dimmer Switch, 1 Gang 2-Way (3-100W), Rotary Push On/Off, Compatible with Dimmable LED/Halogen/Incandescent Bulbs – White Moulded Design

Easy replacement for old-style dimmer switch.
We have a couple of old-style dimmer switches in upstairs bedrooms which have worked great of the years with halogen incandescent bulbs but cause random flickering with modern LED bulbs. I had resisted upgrading the switch because the quality of some early LED bulbs we tried was not that great, the light did not have a “relaxing” ambience for the bedrooms to our taste. Modern LED bulbs are much improved in that regard and I can not really tell the difference when I swap them in for the old bulbs.This dimmer switch has a panel with the same dimensions as the old one so it really was a simple job to remove the old one from the wall and put this one back in its place, the wiring is very simple too, just a live and a common wire to attach (I did the exchange with the upstairs lighting circuit turned off at the fuse box for safety). I was able to reuse the old screws but two screws and white screw caps are included in the box in case you want to use all new fittings.I really like the “soft-start” function of this dimmer switch, which you can barely notice in practice but helps extend the lifetime of bulbs. The rotary control is lovely and smooth too, especially compared to the old switch which had a slightly “clicky” feel. There is a small screw inside the panel which you can adjust before installing the switch which allows you to set a minimum level for the light, I didn’t change this from the default since I prefer the ability to completely dim the bulb but it may be useful for some bulbs which dim too quickly or flicker at low levels. I didn’t notice any flickering, hum or other noise and the dimmer worked very smoothly with both the old halogen bulbs and some new LED ones.

Good for LED, also good for converting existing dimmers to LED
This dimmer has a push-on, push-off action in addition to what is a very smooth rotary action, allowing it to be used in both single and multi-way switching configurations; a second switch in a two-way setup will turn the light on or off as normal, but the dimmer continues to set the brightness. A small adjustment control on the rear allows the minimum dimming level to be adjusted if necessary.It’s 20mm deep and the wires exit from the rear of the dimmer with the screws at the end (some dimmers have end-feed wires and back-facing screws) so the dimmer needs a minimum of a 25mm back box; shallow 16mm “light switch” boxes will definitely need to be replaced.Another use for this dimmer, and one which I’ve used it for, is replacing existing non-LED dimmers in other fittings to facilitate replacement of incandescent, halogen or compact fluorescent bulbs. Note that the locking nut may have a different thread to that on the existing dimmer, so you may need to swap that over as well.It’s worth noting that the terminal holes only have room for one wire. If you need to get more than one wire into a terminal, for example in two-way configurations where there’s a triple-and-earth linking to a switch elsewhere, you’ll need to use block connectors or three-terminal Wagos to get both wires linked to one terminal.