The MH/HPS electronic ballast is used for metal halide bulb and high pressure sodium bulb, which made refer to the American technology standard. It can start the bulb without the additional and compensator. It can save about 30% electrical power and prolong the lamp's life. High luminous efficiency, high illuminating quality, wide range current and voltage, It can be operated from 90-260VAClittle starting current, with various protection function in special situation. Appliance: Aquarium, farm, Garden, Piazza, Factory, Billboard, high speed, Engineering Lighting and so on.