Indoor screw-in touch dimmer. Converts any lamp with metal socket to a touch dimmer. Saves money by providing 3 levels of light with inexpensive one-way bulb. Simple screw-in installation. For use with incandescent bulbs only. 2.4″ W x 3.4″ H x 2.4″ D. No. 6603BC: Voltage: 120V, Wattage: 150W, Type: 3-Light Level, Pkg Qty: 1, Package Type: Clamshell