E27 5W LED Dusk to Dawn Sensor Light Bulbs [Aluminum] Built-in Photosensor Detection Auto Switch Light 3000K Warm White Indoor/Outdoor Lighting Lamp for Porch Hallway Patio Garage: Maxedbuy.com

Additional Information: Dusk to dawn lights utilise a photocell sensor some times called a CDS cell or photoresistor. Generally resistance increases as the light levels drop. This feature is particularly useful for security and safety purposes where it is important to maintain specific light levels and can be activated automatically when these light levels are reached. Feature: Direct alternative to the ordinary energy-saving lamps. Green, environment friendly, no UV and IR radiation, no containing lead, mercury and other pollution elements. Long service life, ensuring the normal use of more than 50,000 hours, three to four times as long as normal halogen lamps. Stable performance and low consumption. Designed to fit standard E27 fittings. Suitable for office, exhibition or home use. Specification: Base type: E27 Input voltage: 85-265V LED: Epistar Bulb color: White Light color: Warm White(2900K-3200K) Long life: Over 50000 hrs Lighting angle: 160° CRI: > = 70 Protection rating: IP50 Lamp case material: aluminum plastic(great for heat radiating and fireproof) Working temperature: -20 degrees Celsius to 60 degrees Celsius The common problems and solutions 1. Bulb can not light on: bulb only work when it can't detect enough light, this bulb will auto turn on at night or on a dark place. Please make sure the socket is E27 or E26 type and it's power on then test it again. 2. Bulb can not turn off: this bulb won't turn off in the daylight if you install it in an opacity lampshade, the sensor can not detect enough light in the daylight (less than 5 lux), so this bulb work abnormally. Please make sure the photosensor is without any obstacles in front of it and the sensor can point to a open space then test it again. Package included: 1 X E27 LED globe lamp