Electromagnetic ballast for metal halide lamp, sodium lamp, mercury lamp 35W, 70W, 125W, 150W, 250W, 400W, 600W, ... , 2000W Electromagnetic ballasts for HID lamps For HS:(high-pressure sodium) discharge lamp MH: (high-pressure metal halide) discharge lamp HM ... , 250W, 400W, 600W, 700W, 1000W8) Color: ivory9) Material: copper or aluminum wire, silicon steel sheet10) TW:13011) Certificate: TUV, CE, RoHS