B11 LED Frosted Candelabra Bulb with E12 Base DUSK TO DAWN - The photocell sensor detects light levels to act as an automatic night light. To activate the sensor: turn it on, leave it on. VERSATILITY - Our LED B11 bulbs are suitable for outdoor applications in enclosed fixtures such as sconces. No need to worry about accidentally leaving the lights on and won’t leave you bumping into things to find the switch. UL & TITLE 20 CERTIFIED - We uphold the highest standards for all our products by testing each product for optimal performance and safety. Our auto on/off B11 LED lights deliver instant start up with no warm up, and no buzzing or flickering for maximum eye comfort. Note: This bulb is non-dimmable. SUNCO BENEFITS - 5 Year Protection! Sunco is proudly based in the USA, offering quality products at affordable prices backed by industry-leading warranties and knowledgeable support specialists. LED Bulb