Technical Advantage: 220-240Vac 3100W inline trailing edge phasecut 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 0100 percent . Premium Quality: Excellent quality with overload protection, over current protection, over temperature protection. Eyes Protection: Dim 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 Watts of dimmable LED Bulbs or 100 Watts of Incandescent or Halogen Bulbs, Dimming range 0 100 percent to cut energy costs and extend bulb life. Note: Before purchasing, please 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: White 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 and or 13cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.