The 2 pin EU plug power cord with dimmer switch is used for table lamps, floor lamps, wall lights, and many other fittings that require an external switching mechanism. Can also be used for other lamps, Dimmer switch: Adjustable brightness (brightness can be adjusted, but only with a common thread of incandescent bulbs). Key switch: opening and closing, only a brightness (for threaded ordinary incandescent bulbs, energy-saving light bulbs and LED bulbs. Specification: Material:Plastic and Copper Material: copper wire core Parameters: 220V / 110V 50Hz / 60Hz Powered mode: In-line Plug mode: EU Plug