Dusk to Dawn Sensor - Using the latest technology, the AmeriTop A19 Led Sensor Light Bulb built-in Photocell light sensor, it will detect the light intensity and turns on the dusk to dawn light bulb automatically at dusk and turns it off when it's dawn. Saving you the trouble of manual controls. It works properly even in lighting fixtures or close to other fixtures by only detecting sunlight rather than other light sources.

Comfortable Lighting - This A19 led light bulb offers Warm White and comfortable lighting with high CRI 80+ (color rendering index); At 3000 Kelvin these bulbs deliver bright, crisp color ideal indoor and outdoor use. It can light up every dark corner thanks to its incredible 800lm output that puts an end to worrying about tripping and falling in the dark.

Lasting & Energy Saving - With Aluminum heatsink to make sure that the heat comes out from the Lamp. This LED bulb lasts 10x longer than incandescent and 4x longer than halogen bulbs, saving you the cost of frequent bulb replacement. 10W equivalent to 60W traditional light bulb, providing 800lm saving 83% energy, the same enjoyment, sharply decrease your electricity costs.

Wide Application - Suitable for indoor or outdoor use. Simply screw into any standard E26/27 light socket or fixture. Thanks to the light sensor, these light bulbs can be widely used for these places where you don't want to switch the power physically like porch, garage, courtyard, hotel, offices, hospital, schools, factories, museum, shopping malls, supermarkets, restaurants or any other places where accent lighting is required.

Safety & Reliable - Our Dusk to Dawn light bulb meets UL-Listed E33485, RoHS, FCC for outstanding quality. No flicker, no flash, No lead/ mercury/ UV / IR, that's designed for the comfort of your eyes. We uphold the highest standards for all our products by testing each product for optimal performance and safety. The hassle-fee 3-year unlimited warranty provides you with our excellent after-sales service.