... WireBrown/L; Blue/N; Yellow, Green/G 28Housing Color of Lamp HeadBlack/ Silver (optional)29CertificateCE,RoHS30ApplicationWorkshop, warehouse, toll station, gas ... can make sure the luminous flux, controlling the light inside of a useful area. It improves the efficiency of ... the lower color temperature, like sodium lamp, or higher color temperature, like mercury lamp. This could satisfy the feeling of ...