Dusk to Dawn LED Bulb,light up your world! This dusk to dawn light bulb is ideal for illuminating corridors and courtyards,and must be lit when it begins to darken. Since the built-in sensor automatically turns the light bulb off and on,there is no need to physically turn on the light bulb. It is worth noting that our dusk to dawn bulbs are sensitive to optical density. If the light sensor is blocked by the luminaire and the surroundings are dark,the light bulb may illuminate even during the day. Application: Garden,porch,hallway,pavement,front door,garage,paddock,driveway,stairs,loft,pole lights,outdoor wall lights,etc. Improve housing safety: The twilight-dawn sensor LED bulb is especially useful for outdoor/indoor lights. If you leave home or spend the night while on vacation - they will automatically turn on/off to enhance home security. Product Features: Built-in photoelectric sensor:The dusk to dawn bulb has a built-in photoelectric sensor that can automatically measure sunlight. When the illuminance is less than 15 Lux,it can be opened at dusk; When the illuminance is greater than 40 Lux,it can be turned off at dawn. Easy to install:dusk to dawn sensor bulb has a standard E26 base. Simply plug the bulb into the E26 socket to work safely and stably. Note:Please turn off the power before installing the lamp. Parallel installation parallel mounting,keep at least 1.5m/4.9ft between two bulbs in case in case of mutual effect. Product Specification: Item Weight:5.6 ounces Product Dimensions:‎2.4 x 2.4 x 4.5 inches Color:‎5w-warm White Material:Plastic Shape:‎Bulb Voltage:‎110 Volts Wattage:5 watts Luminous Flux:‎400 Lumen Special Features:‎A19 induction light bulb,40W equivalent dusk to dawn porch light,Dusk to dawn bulb outdoors,Sensor light bulb,LED Dusk to dawn light bulbs,E26 LED light bulb Package Include: 2x LED Light Bulb 1x User Manual Dusk to dawn bulbs are equipped with a built in light sensor. It turns on automatically at dusk,and it turns off automatically at dawn. This eliminates the need to physically turn the bulb on and off LED sensor bulbs are particularly suitable for outdoor/indoor lighting. When you are on vacation or on a business trip,even if there is no one in the house,the light-sensing bulb will illuminate your house to prevent thieves and enhance house safety Using high-quality LED,aluminum + PC materials,the service life is up to 30,000 hours The 5W sensor LED bulb can replace 40-watt incandescent bulbs,providing 400lm of energy and saving energy. Can greatly reduce your electricity bill Just plug the bulb into the E26 socket,and you can work safely and stably. Very suitable for gardens,courtyards,corridors,front doors,garages,stairs,pavements,schools,hospitals,etc