LIVOLO US Standard 3 Gang 1 Way Dimmer Switch With Black Tempered Glass Panel, LED Indicator,AC110~220V,Replace 3 Switches in 1 Gang Wall Box, C303D-82 [Night Mode]:Set your Dimmer lamp to your desired low light level and protect your eyes from bright lights. [Memory function]:By holding the gang,the lamp will gradually dim up/down.it will remember the brightness of the last operation. [Compatible lamp]:Halogen lamp,Incandescent lamp,Dimmable LED lamp.and requested the wattage should be 25W-500W,allow to connect light bulbs in parallel. [LED backlight]: soft red/blue indicator shows the on/off clearly, and help you find the position of the switch easily in darkness.[red is on,blue is off.] [Multi-protection]: waterproof tempered glass panel, fire-retardant material and no electric arc new technology, which is to guarantee secure and reliable working.