... mine etc. High pressure sodium lamp(HPS)Characteristic: high in luminous effciency, less in power consumption, long in service life, whitegolden ... road, airport, whart, station, factory and mine etc.CodeTypeWattageSupply Voltage Luminous flux Avg life Base Max DiameterMax lengthED1200901SON-ED310310W220-240V E40120mm289mmED1200901SON ...