Built-in PIR infrared motion detector, this LED ceiling light instantly turns on when it detects motion from up to 18ft away under dark light. The fitting turns off automatically after 20 seconds when no motion detected, conserving battery life There are two modes available using a switch nearby the motion sensor, slide the switch to turn on/shut off the photocell sensor. When the light is on, the fitting will stay off during daytime and will only be activated at night. When it is turned off, the light can be activated on all day long. This is a battery powered flush light using 4 x D-cell alkaline batteries (NOT included). This fitting can light up a 300 square foot area. The batteries can provide up to 6 months of light output with an average use of 20 activations per day. Features built-in 80pcs bright & long life-span SMD2835 warm white LED. It diffuses well in all directions with up to 300 lumens brightness to make sure you never stumble in the dark. Makes for a perfect nightlight in any room in the house or garage etc. Features white plastic body with shiny silver trim. Wiring is not needed and the easy install can be completed in under five minutes. Perfect addition for your bedroom, bathroom, stairway, corridor, workshop, basement, garage entrances, roof, entryway etc. Don't leave lights on needlessly running up the electric bill any longer.