The Uni-Com Sensor Lightautomatically switches on when movement is detected. Perfect for bedrooms, hallways, lofts, cupboards and use all around the house, anywhere you need lighting but do not have a power supply.The sensor light has a large detection range and senses movement up to 1.5 metres away. The light stays on for 15 seconds and then turns off if no more movement is detected.Its 5 long life LEDs provide a soft white illumination for reassuring comfort and safety, and the dusk to dawn sensor ensures it only operates when it is dark, saving battery life.Quick and simple to fit using the adhesive pad or hung from a screw using the acetate hanger (both supplied) , and powered by 3 x AAA batteries (not supplied) .