Bulbrite Dusk to Dawn Pack of (4) 9 Watt A19 LED Light Bulb with Frosted Glass Finish and Medium (E26) Base - 3000K (Soft White Light), 800 Lumens Come home to a well-lit house, with the adds safety and security benefits provided by Bulbrite's Dusk to Dawn LED light bulb. This light bulb automatically turns on at dusk and off at dawn, and uses a proprietary design that reduces false ons/offs. The light sensor is not visible, giving it a seamless look that does not detract from the bulb's appearance. This LED Dusk to Dawn bulb fits any fixture suited for a standard A19 with standard E26 base.