This High Power bulb is intended for industrial use, such as warehouses, hangars, workshops and other commercial buildings. With a traditional IC driver the bulb has a wide voltage range 176-264 V, that makes it work steady in unstable mains. Improved 3-side heat dissipation system provides better temperature exchange and ensures stable operation at high load conditions. Hovewer, we do not recommend using the lamp in sealed fixtures. The lamp contains no mercury and has no UV radiation.