LED Compatible Dimmer - Inline light dimmer switch works with up to 100 watt dimmable LED / CFL bulbs or 300 watt Incandescent bulbs; 110 - 120Vac Input Voltage; 5 ft extension cord allows you to place the lamp dimmer in an easy-to-reach area Full Range Stepless Dimming - Smooth slider switch slides up to brighten, down to dim gradually through full-range stepless dimming; snap into the off position to power off completely to avoid the slider moving back ; the anti-slip pads on the bottom prevent it from sliding during the dimming process Adjustable Dimming Range - Adjust your dimming range for LEDs and CFLs with the SET switch; set your most comfortable brightness range; prevent the lamp from flickering at low voltage effectively; save energy and extend bulb life; protect your eyes from overly bright lights Create the Perfect Ambiance - Adjust bedside lamps, table lamps, night lights, decorative lighting to desired level of your preferred brightness; easy to control mood