... 60Hz Specification & SizeName HID Electronic Ballast for Metal Halide Lamp ModelGN020230VACEX(20W)GN035230VACEX(35W)Size97*40*30(mm)weight/ ... temperature not first start, several start fragile cathode shorten lamp life 4,starter life is short, the need to replace ... 3, to reduce power consumption, and low self heating. 4,Abnormal lamp automatically cut off the power 5, with overvoltage protection, ...