Light Sensor &PIR Motion Detector LED Daylight Bulb Standard Base 11w (Replaces 75 watts Bulb) Great for Closet,Garage,and Basement. Built-in with PIR sensor and light sensor,only light up (Automatic) when it is dark and someone walk in it's detecting range (4-5 meters) and keep lighting for 40-60 seconds after movement detected. Suitable for home bedroom, household corridor, veranda, home balcony, toilets, underground parking lot, office & shop, etc. Automatic trigger signal output level start LED the drive to work, when people leave induction area, after set up good delay time, shut down automatically, lamps and lanterns in ultra low power dormancy. Brightest LED motion sensor bulb in market that works 24 hours!150 detecting, 4-5 meters detecting range; the angle of the lamp is 150 degrees rotatable Replaces 75w light bulbs, Medium screw base E26 socket, LED Daylight Bulb (500k-6500k),any problems, contact:help@ashialight.com freely.