Pulse Start Metal Halide Ballast Kits are designed for ease in retrofit or substitution of standard metal halide ballasts. Save up to 50 energy savings when retrofitting from standard metal halide to a Pulse Start metal halide system. Ventures Uni-Form Pulse Start Ballasts offer: Superior lamp power regulation, improved color uniformity, improved lumen maintenance, optimum wave shape, lower current crest factor, improved lumen maintenance, lower audible noise, improved ballast efficiency, cooler operation, longer system life and thermal protection.