GE 18259 Touch Lamp Control, 3-Level Dimming for Use with Metal Socket Lamp Convert your existing lamp into a 3-level touch lamp - low, medium, high, or off Select the ideal amount of light for any situation - switch from ambient mood lighting to full brightness task lighting in seconds Convenient, easy to install and uses your existing light bulbs - no specialty dimming light bulb required Simply attach the touch lamp control socket to the light fixture, insert the bulb, and enjoy touch lighting in seconds Does NOT work with lamps with plastic or ceramic lamp sockets. Fits within most lamp shade harps. Works with incandescent light bulbs only