Motion SensorBulbs: Bulbs have a built-in motion sensor that automatically turns off during the day and turns on automatically at night when motion is detected Energy saving: The luminous flux of this 12W bulb can reach 1020LM, which is 3 times that of ordinary energy-saving lamps. Save on your electricity bill, what more can you hesitate Easy to install: Bayonet Light Bulbs are easy to install into standard fittings or light sockets and are ideal for hallways, garages, entrances, stairs and more Super long life: Bayonet Light Bulbs last up to 10 years, much longer than incandescent bulbs, reducing the hassle of changing lights frequently Service: These Motion Sensor Bulbs are rigorously tested for durability and longevity of materials.