FLOODLIGHT EXPLOSIONPROOF Type Protection : Exd IIB Class of temperature : T4 - T3 Protection Degree : IP66 Implementing the standard : GB3836.1-2000, GB3836.2-2000, IEC60079 Rated Voltage : 220V / 50Hz Explosion-proof grade : WF1 Lamp Holder : E40 Supplied with light source : Hi-pressure mercury lamp : 175W, 250W, 400W. Hi-pressure sodium lamp : 150W, 250W, 400W. Metal halide lamp : 175W, 250W, 400W