LUMATEK 600W 240V CONTROLLABLE BALLAST The Lumatek Controllable Ballast 600W provides a stable precise voltage to the lamp creating a higher PAR/PPF output and yet is far more energy efficient than most other ballasts on the market. The latest high output 600W horticultural ballasts from Lumatek are designed to give high yields and top quality results, year after year. Featuring 4 different settings from 250w to 660W, this ballast can be used progressively to ensure the optimum performance at each stage of your grow and can be used with both high pressure sodium or metal halide lamps. Featuring intelligent start up and soft-dimming facility the Lumatek 600W runs extremely efficiently generating much less heat than other conventional ballasts and runs silently. It also features full circuit protection including open/short circuit, over temperature, over/low voltage, end of lamp life/rectification and EMI suppression. The new addition of Control capability allows you to smartly monitor your room temperatures, light timing, automation, safety control and dimming. By simply connecting the Lumatek Digital Panel (sold separately) into the TRS “Link” port on your controllable ballast.