Features: 1) Fits for the illumination in ship, petroleum platform and chemical industry. The shell adopts aluminum alloy, with toughened glass, finished aluminum-plate reflector, special seal gum and with inside ballast. Suitable for the illumination in explosive gas places (zone 1 and zone 2) 2) Protection grade: IP56 3) Light source: high pressure sodium, metal halide and high pressure mercury 4) Voltage/power: 220V/250W, 400W