It turns on automatically when you approach the toilet in dark, and turns off after you leave.Works only at night, easy to fit to any toilet. It is , energy-efficient light that makes the bathroom safe and easy to use at night.Suitable for all bathrooms: home, hotel, restaurant, house, etc . Light has colors, the color will change automatically, you can also set one color by press the button, if you press the button again, the light color will continue to change. Easy to install, just hang the light on the side of your toilet with the flexible arm, no need to use a sticker, convenient to remove and keep your toilet clean. Kinds of color will change turn by turn, 60 seconds in a round, and then cycle.With photosensitive sensor and IR sensor, it lights when people come at night.