Technical Advantage: 220-240Vac 3-100W inline trailing edge phase-cut dimmer, the dimming process is completely silent and will not make a buzzing sound The lowest brightness can be preset, and the dimming range is 0-100 percent . : quality with overload protection, over current protection, over temperature protection. Eyes Protection: the lights 0 percent - 100 percent to let your eyes gradually adapt to bright light or darkness reduce eyestrain and protect your eyes from overly bright lights. Energy Savings: Works with max 50 of dimmable LED Bulbs or 100 of Incandescent or Halogen Bulbs, Dimming range 0 - 100 percent to cut energy costs and extend bulb life. Note: purchasing, confirm whether your LED light is marked as "dimmable". If it is not, you cannot use this dimmer for dimming, you can only turn on or off the lamp or the lamp flickers. Cannot be used for speed control of inductor and fans. Colour: Black Material: Plastic Package Contents: 1 x dimmer switch Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.