This is the all-black version of the External Plug-In Dimmer we carry (an all-white version will also be available).
No installation is needed as you just need to plug it on a standard Type I power socket; plug your LED lamp onto the dimmer's own socket and smoothly control the dimness of the LED lamp down to 0%-flicker-free.
Good for dimmer-compatible festoon strings; LED light bulbs; table lamps or floor lamps. The black power lead is 2m long.