9.5W, A19 Intelli Bulb Dusk To Dawn LED Bulb, 800 Lumens, 2700 Kelvins, E26 Base, 15,000 Hours, On At Night, Off During The Day, Built-In Light Sensor, Automatically Turns Bulb On/Off, Turns Any Outdoor Light Fixture Into Dusk To Dawn Security Light, Conserve Energy, For Best Performance We Recommend Use In Outdoor Light Fixtures With Clear Access To Direct Sunlight To Activate The Light Sensor, CEC Compliant.