Feature: and The dimmer is working with a reverse logic. It means that when I rotate it clockwise, it turns the lamp on for percent 100. As I rotate it clockwise more, it darkens the lamp. LED Dimmer ( International Standard 86mm ) Rated Voltage: AC 110V or AC 220V (please choose correct item!!) Full Load Power: Less than 300W Modulation: Knob Rotation Angle: 320 Degrees Switch Type: off-on Dimmable Range: 1 percent to Shell Color: Elegant white Relative Humidity: 85 percent RH Operating Temperature: -10 to 50 Degrees Celsius Storage temperature: -25 to 65 degrees Celsius Life: More than 80000 times Installation Hole: 60-65mm Package: 1 x LED Dimmer Switch 2 x Screw 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.