... 3)Certificates: TUV, CE, RoHS 1) Standard Elcctromagnetic Ballast, capacitor, ignitor for high pressure sodium lamp, metal halide 2) lamp & mercury ... mercury vapour) discharge lamp 3) Provides long service life and super quiet 4) Watts: 150w, 250w, 400w, 600w, 700W, 1000w,2000W ...