Work Automatically: Aovpex smart light sensor bulb has a built-in photocell detector, plug and play, no wiring, timers or additional hardware needed, keeps the switch on, the bulb will automatic shut OFF in the daytime and stay ON when sunset, totally hands free experiences to protect your property when you are not home. | Super Bright: This smart dusk till dawn led bulbs provide over 1100lumens which is about 100W halogen bulbs equivalent, make your house around brighter and safer at night. | Money Saving: This automatic outdoor bulbs only consume 13watt but 100watt halogen equivalent, save over 85% on your electricity bills. | Other Features: Indoor/Outdoor use, waterproof/weather-proof, works in any position(up/down light fixture), Suitable for totally enclosed luminaires/fixture ( clear/translucent/frosted ), No flicker, No flash, No mercury, 100-240V AC operating voltage. | Tips: 1. Not applicable to timers; 2. Keeps the power switch always ON; 3. Bulbs distance keep at least 2meter/6.6ft to avoid interference.