1) Ballast for MH HID lamps 2) CWA type 3) Wattage: 35 - 2000W 4) Loss power loss, no noise 5) Low temperature rising FeaturePower range of American standard CWA ballast for metal halide lamps is 175W-2000W,They have the features of unique design, great capacity of resisting fluctuation of voltage, stable power output, smart-up current, no need of trigger cost-saving and more chance lighting ...