Automatic Photocell Sensor: Rated Voltage:110-277VAC, Rated Loading: 1000W Tungsten, 1800VA Ballast. Automatically turns light on at dusk and off at dawn. The dusk to dawn sensor is suitable for LED, parking lot light, street lighting, outdoor lighting, factory, indoor lighting, pedestrian pathway and landscape lighting. IP65 & Surge Protection: The surge protection help to protect the dimmable lamp post from the lightening, high quality material shell avoids the internal corroded or damaged, weather-proof and durable. Easy Installation: Twist lock design makes it easy to replace and install, just need to plug in a base. Standard prongs ensures this photo control sensor could be used with any standard twist-lock style receptacle. Time-delay: The photocontrol light sensor designed with 3-20 seconds time-delay. Accurately judges natural light, won't be triggered due to other temporary light. Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Blue Material:Plastic Package Contents: 3 * Photocell Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.