DUSK TO DAWN FEATURE: Built-in sensors that turn on the dusk to dawn light bulb automatically at dusk and turn it off when it's dawn. This eliminates the need to physically turn the bulb off and on. ENERGY SAVING: The dusk to dawn Light bulb uses less power compared to traditional bulbs and, therefore, cuts your electricity costs. LONG LIFE: The outdoor smart light bulb is made of plastic mask according to the LED chip unique cooling requirements thus ensuring long life. IMPROVED SECURITY: The outdoor sensing light bulb will light up your home even when you are not around as long as it is dark.