Battery Powered: Powered by 4 AA batteries (batteries not included), can provide 6 months of light with an average usage of 8-10 activations per day. Motion-activated, auto-off, and a light sensor help extend battery life. Motion-activated and light-sensor: Built-in PIR infrared, it will light up automatically when you approach and will automatically turn off after 20 seconds without motion detection. Note: The motion sensor light turns on when motion is detected in darkness or dusk to dawn. Constant Light: Turn the switch to ON, the light will always be lit. Turn the switch to OFF, it will turn off. The LED ceiling light provides 90 lumens of bright light for dark areas to ensure you never trip in the dark. Wide Application: Built-in 48 LEDs, perfect 6000K motion sensor LED ceiling light for closet, staircase, hallway, basement, shed, pantry, under cabinet, counter, hallway, shower, bathroom, hall, etc. Easy to install: install the motion sensor ceiling light anywhere batteries anywhere in the house without an electrician. Note: This light can only be turned on in dark environment. It will not turn on if the light sensor has detected enough light.