Feit Electric A800/927CA/DD/LEDI Dusk-to-Dawn LED Bulbs are the perfect hassle-free way to keep outdoor light fixtures well-lit at night. This non-dimmable 2700K Soft White light produces 800 lumens while using only 8.8 watts - up to 85% less energy than a standard 60-watt incandescent. 90+ CRI LED light makes colors appear more vibrant and skin tones look more natural. An integrated photocell sensor detects natural sunlight to automatically turn the bulb on at night and off during the day. For optimal results, place the bulb where it will receive adequate sunlight during the day and darkness at night, as bright external lights may trigger the sensor. Simply install them into medium base fixtures to experience their convenience and energy savings. Upgrade to Dusk to Dawn LED bulbs for even, soft light that lasts a decade or more.