Auto-sensing: Motion sensor lights turn on automatically within 15ft radius, auto-off after 15 seconds of no detected motion helps extend battery life. It only lights up when its dark and when motion is detected. Gorgeous design: aluminum alloy motion sensor wall light, covered with smooth brushed aluminum, silky touch, illumination and PIR Power supply: please use 3 new AA batteries for best performance. Notes: The light will not turn on if the light sensor has detected enough light. 2. Never install the lamp near a damp or high temperature place to ensure the adhesive tape works well Simple Installation: Can be installed anywhere by the 3mm adhesive tape. Also equipped with screws, easy to fix with a screwdriver. Cordless Wide Uses: Ideal for hallways, workshops, basements, indoor garages, stairwells, doorways, closets and other dark places in your home and shed.