Electromagnetic ballast for metal halide lamp, sodium lamp, mercury lamp 35W, 70W, 125W, 150W, 250W, 400W, 600W, 1000W, 2000W Electromagnetic ... :(high-pressure sodium) discharge lamp MH: (high-pressure metal halide) discharge lamp HM:(high-pressure mercury vapour) discharge lamp 1) Main voltage: 220 ...