Automatically: built-in sensitive light sensor, the nightlight automatically turns on at dusk and off at dawn. You don't have to worry about turning it on and off around the house in the morning and evening. The smart sensor does it for you Energy saving: 0.5w(max), 1 kw/h per year. Night light, using the most popular LED technology, low power consumption, it can continually operating over 50000 hours (no bulbs or batteries ever) Wide application: put them throughout your house to help you in night operations: hallway, bathroom, bedroom, kitchen, living room, nursery, kids room, stairway, entryway, or anywhere you need some extra light in the dark. An excellent gift for your family and friends Comes with 6 Month warranty