Mains sockets are often at a premium in bedrooms and on landings the places you most want to plug in a night light but with this clever new plug through design you can leave it plugged in 247 and still use the socket for other thingsbetter still operation is fully automatic activated by a dusk to dawn sensor to switch on the led only during the hours of darkness the led emits a gentle white glow not bright enough to keep you awake but sufficient to guide you safely if moving around a