Bogao E12 Candelabra LED Bulb, Dusk to Dawn Light Sensor Light Bulbs, 6W(60W Equivalent), White 6000K, Candelabra Base, Porch Driveway Security Light LED Candle Bulb, Not Dimmable, 2 Pack Auto ON/OFF -- With built-in light sensor, which will detect the light intensity, lights up automatically at night, turns off during the day. Just install, no need to turn on/off the light physically. Convenient to Lighting -- You don't have to think about turning the porch lights or driveway lights on at night anymore. No more running down the stairs to turn on outside lights. You don't have to remember to turn lights off in the morning anymore. Nice for Security -- Dusk to dawn sensor LED bulbs are particularly useful for outside/indoors lights. When you're away from your house on vacation or you are gone overnight, they will come on/shut off automatically, enhancing physical security. Energy Saving -- White 6000K 6W E12 base dusk to dawn candelabra LED bulb can replace a 60 watt incandescent light bulb. It is only on at night or in dark area and save up to 85% on electricity bill. Durable&Reliable--It lasts 30000 hours and reduces frequency of re-lamp. No lead or mercury. No UV or IR. CE, RoHS, FCC compliant. One year warranty. Make sure that there should be a distance between the two bulbs, because when one bulb is on, the other bulb will sense the light and will not work.