Philips Dusk to Dawn A19 LED light bulbs are equipped with a built in light sensor that turns the lights on automatically when the sun goes down and turns the light off when the sun rises. Suitable for indoor or outdoor use, these bulbs have standard E26 base for most fixtures. Not for use with Philips HUE products. These Dusk to Dawn Sensor bulbs provide 800 Lumen?s of soft white light, equivalent to 60-watt incandescent with 75% less energy use. With 2700-Kelvin soft white light, these light bulbs offer the comfort and security you need in a with the benefits of long life and energy savings you want. Best-in-class Philips LEDs provide turn on instantly with energy-efficient flicker-free, natural light that won't degrade over time. Unlike cheaper imitations, Philips LED offers clean, natural lighting with exceptional clarity. LED light bulbs last upto 10X longer than incandescent and halogen bulbs. Unlike fluorescent and compact fluorescent bulbs, Philips LEDs are mercury-free so they don't contribute to hazardous waste. This pack of 3 Dusk to Dawn A19 Philips LED Sensor Light Bulbs comes with a 10-year warranty if registered. Each bulb is expected to deliver a lifetime of upto 22,000 hours (based on three hours per day), saving you the cost and hassle of frequent bulb replacement. Emits virtually no UV/IR light. 25,000 hour rated average life.