Adheres to the inside of your toilet seat. Light turns on as you approach the toilet. Illuminates green when the toilet seat is down. Illuminates red when the toilet seat is up. LED toilet light with good quality. The choice of modern life. Specification: Indoor Use Only, High Quality and Best Choice of Modern Life. Battery Powered. Energy-efficient. Type of Bulb: LED Finish: Green Shade Color: White Material: Plastic Style: Modern Assembled Height: 3.50 inches Length: 3 inches Width: 1 inches Package Included: 1x Grde™ LED toilet night light Installation: Adhere toilet lights to your lid with included adhesive tape so top is hidden with seat up Slide toilet lights left and lift off to install 2AA batteries (not included), then slide it back on Wait 2 minutes after installing batteries or handling toilet lights to allow sensors to settle, works only when you approach in the dark. Why need you buy it? Bathroom lights can be painfully bright in the middle of the night and can disturb you or your partner's sleep or other family members. Besides Unfortunately, most night lights waste electricity all night long, occupy valuable electrical sockets, and don't put light where you need it. The LavNav is a better solution. It turns on when you approach in the dark, and turns off after you leave, shining gentle yet sufficient light where you need it, when you need it. Better yet, the LavNav uses RED or GREEN light to cleverly show the position of the seat. It's smart, energy efficient lighting that makes the bathroom safe and easy to use at night.