Super Bright LED Lights - Up to 20 lumens output, 6 super bright SMD 2835 LEDs; bright enough to ensure you never stumble in the dark. PIR Motion & Light Sensor - Automatically turns on within 10 feet, automatically turns off after 15 seconds with no motion detected, extending battery life. It only turns on when it is dark and when motion is detected. Easy Installation - Simple to install, no hard-wiring required. With adhesive pads and a built-in magnet, you can stick it anywhere you like. Battery Operated - Powered by 3 AAA batteries (not included) for wireless installation. Provides you with illumination in areas that have limited or no access to electricity. Note: This light can only be turned on in darkness. It won't turn on if the light sensor has detected enough light. And DO NOT install this light in a high-temperature place, otherwise, the high temperature will affect the adhesive strip, and then the light will slide easily!!