These amazing LED style night lights cost, on average, only twenty-five cents a year to operate! Each has an automatic sensor that turns the light on at dusk and off at dawn. Plugs into any standard wall outlet. Bulbs have a super long life of 100,000 hours. Lifetime manufacturer's guarantee. Two night lights per pack. Price is for two lights. LED night light set. Two lights per pack. Auto sensor. 100,000 hour life.