The star night light with the built-in smart sensor, the pentagram-shaped nightlight turns on at dusk and off at dawn automatically, so you don't have to turn them on and off in the evening and morning all the time, which will save your time and energy.this dusk to dawn sensor night light adopt a plug-in design, without need for batteries to power; The led sensor wall lamp works under 110-240V AC input with a standard plug, releases no heat and stays cool for touch, safe to use in any place where you need light at night.These warm LED night lights are suitable for kids' rooms, stairs, hallways, kitchen, stairs, living room, bathroom, bedroom, and nursery etc.