LED Compatible Dimmer - Inline light dimmer switch works with up to 100 watt dimmable LED / CFL bulbs or 300 watt Incandescent; 110 - 120Vac Input Voltage; 5 ft extension cord Full Range Stepless Dimming - Smooth slider switch slides up to brighten, down to dim gradually through a full range of stepless dimming; slides into the off position to turn the power off completely Create the Perfect Ambiance - Adjust bedside lamps, table lamps, night lights, decorative lighting to desired level of your preferred brightness; easy to control mood lighting for bedroom, nursery room, holidays, and so on Energy Efficiency - Dim the lights to save energy and extend bulb life for your expensive lamps; protect your eyes from overly bright lights; save money and make your home more comfortable No Wiring Necessary - Quick to install with tool-free set-up; no need to install an in-wall dimming device; simply plug in and use; RoHS compliant material (safety, health and environmental protection)