I used this switch on an accent lap that I use as a nightlight. I needed the lamp to be dimmable and this provided a non-bulky solution attached to the lamp itself vs an outlet dimmer. The installation was straight forward following the cable's coding with the wider plug prong to identify the neutral cable vs the live cable. Even that the dimmer is a bigger that what I'd like it ideally to be, it's ok. Once I finished installing it, when setting it in the lowest possible setting the light was dim but with time became brighter, and was not possible to get it at a lower level, but by opening the plug again and adjusting the internal potentiometer I was able to set it to a wider range, from no brightness at all to full brightness, so it works perfectly for the use I intended it for. Be very cautious when adjusting the internal potentiometer, since you'll have the live wires exposed, so wear rubber gloves and use an isolated screwdriver.