... than magnetic ballast, needless of starter and complementaryp; -No flare, no noise, and star fast, and power factor up to 0.97; - ... The case is made of cold-rolled steel, reliable, safe, and anti-rust; -Regular work voltage: 185~260V, start-up temperature ... , reducing maintenance cost. -With special protection to prevent high voltage, short circuit and leading E. O. L. L; -Long average life-span: up ...