Product Description The sensor LED night light is cute.  Energy saving and convenient to use  3PCS High Quality LEDs  Just Sticker on any smooth and clean surface  Using 3PCS AAA size batteries  Magnetic backside is easy for replace batteries With PIR/light sensor: When the light is weak, the unit switch on automatically when it feels movements close to the sensor, In the same way, it will Switch off automatically after appr. 15seconds. When the light is strong, the unit can't switch on.