Super-bright LED Bulbs - Up to 20 Lumen output, 6 pcs super bright SMD 2835 LED; bright enough to make sure you never stumble in the darkPIR Motion & Light Sensor - Auto-on within 10 feet, auto-off after 15 seconds of no motion detected helps prolong battery life. It will turn on only when it is dark and when motion is detectedEasy Installation - Simple to install, no hard-wiring. With double-sided adhesive pads and built-in magnet, you can stick on anywhere you likeBattery Operated - Powered by 3PCS AAA batteries (not included) for coreless installation. To provide you with illumination in areas that have limited or no access to electricityNote: This light can only be turned on in darkness environment. It won't turn on if the light sensor has been detected by the enough light. And Please DO NOT install this light in high temperature place, otherwise, high temperatures will affect the adhesive strip, and then the light will slide easily!!