Constant output, power supply voltage fluctuations strong resistance; While the low-frequency square-wave output, fit within Halide Discharge characteristics, minimize electrode sputtering, lower-recession; Ballast 210Hz frequency output power, the complete elimination of the traditional inductive ballasts brought comfort to the stroboscopic 50Hz; Power consumption is only 4-5% lower than traditional inductance ballasts power consumption 12% more energy-efficient Very unique design functions such as short-circuit protection, to pave the way so that by the lamps light and maximize the safety and protection; The small size, light weight, easy installation GDM-R series with the Electronic Ballast for Metal Halide Lamp GDM-EB can reach 100% perfect match;