A suitable place for a variety of indoor and outdoor workplaces. Chinese coal industry, PetroChina, Sinopec, CNOOC, electric power, metallurgy, railway, steel, shipbuilding, military, aerospace, public security and fire, chemical, government departments, venues, transportation and large enterprises use fixed lighting needs. Second, the performance characteristics 1, bright energy efficiency: an efficient gas discharge as a light source, lamp life of 10,000 hours or more, especially for large-scale unattended outdoor lighting. 2, professional design: use of lightweight alloys and high-tech spray technology, the shell will never rust, never corrosion. Light body internal structure and materials through the double shock absorption, good seismic performance of the lamp. Using piping and other new technology to ensure shell integrity, reliable seal, waterproof and dustproof. Lamps overall low temperature, good heat dissipation, can reduce the probability of failure. 3, environmental durability: good electromagnetic compatibility, no electromagnetic interference on the surrounding environment. Accord humane designs and green colors full harmony with the natural landscape, blend. Technical parameters sodium metal halide 250/400W 250/400W standard equipped with 400W Dimensions 445X426mm (lamps) 235X223X162mm (ballast) Weight 5.2kg (lamps) 8.1kg (ballast) Rated voltage 220V / 50HZ enclosure protection IP65 Protection grade WF2