Motion and light sensor: Motion sensor light auto-on works within a 10-foot range, auto-off after 15 seconds of no motion detected helps extend battery life. It will turn on only when it is dark and when motion is detected. LED Sensor Light Super Bright Bulbs: output up to 20 lumens, 6 pieces of super bright SMD 2835 LEDs; Bright enough to see where you're going at night, perfect as a night light for stairs, steps, hallways, closets, and cabinets. Easy Installation: Easy to install, no wiring required. Stair Sensor Lamp comes with super strong double-sided adhesive pads to stick anywhere. Plus, the built-in magnet allows you to attach them to metal surfaces. Battery Operated: Runs on 3-piece AAA batteries (not included) for installation without screws or electrical currents. To provide you with lighting in areas that have limited or no access to electricity plugs or outlets. Note: Motion Sensor Lights Light can only be turned on in a dark environment. It will not turn on if the light sensor has been illuminated by a powerful enough beam of light. And please DO NOT install this light in a high temperature place, otherwise the high temperature will affect the adhesive strip and the light will slide off easily