Touch the left arrow button, the light will become brighter Touch the right arrow button, the light will become dimmer. Tempered glass panel and high quality polycarbonate back casing When turned off, a blue LED locator indicator is visible making it easy to see in the dark. no spark contact. With overload and overheat protection, make your home safer. Applicable to incandescent lamps or halogen lamps only. The standby current for the lamp should be more than 280mA Single live wire control, very easy to install, direct replacement for existing switches.