LED Dusk-to-Dawn A19 Light Bulb, Photo Sensor, 9W (60W Equivalent), 800lm, 2700K Soft White, CRI 80+, for Porches, Front Yards, Pack of 4 Dusk to Dawn A19 LED light bulbs are equipped with an external light sensor that turns the lights on automatically when the night falls and turns the light off when the dawn comes. Comes with E26 bases which are compatible with most fixtures, the bulbs are available for outdoor use. It can be widely used for porches, garages, front yards, back yards, corridors, hallways, driveways, etc. Product Advantages The 2700K soft white light brings you a warm and comfortable atmosphere The high 800lm light output offers extra protection to your property by providing sufficient lighting distribution. This light greatly reduces your energy consumption and saves you 85% on your electricity bills by automatically turning on at dusk and off at dawn. This product is UL, FCC, ROHS, and DOE listed for both quality and efficiency. Professional after-sales service fully protects your rights and benefits as a customer. Note: This dusk to dawn A19 bulb is NON-DIMMABLE. The dusk to dawn function only can be triggered by sunlight. Don't cover the photo sensor with anything. Luminous flux: 800lm CRI>80   Beam angle: 240°   Waterproof rating: Damp location