Item function is subject to your control switch and lamp holder- If your switch is not controlling the bulb (Switching it off) you need to reverse the wiring of the switch.(7W LED bulbs feature High Power SMD LEDs (highest quality chip) with a frosted cover which produces a great light output. It is aesthetically and intelligently designed to significantly reduce energy consumption by up to 80% and deliver long life performance: matching and incredible maintenance free hours of use. It gives out a huge wide beam angle of light, and is designed to give the widest beam angle of any SMD bulb on the market. Size:66*116mmPerfect for the indoor lighting, such as home, bedroom, living room, hallway, hotel, kitchen, studio, restaurant, hotel, library, KTV, meeting room, show room, shop window and many other application lighting and so on. Drop Proof from upto 15 meters. Material: plastic shell Working temperature: -20 Centigrade to 60 Centigrade Lifespan.