NOTE: This kit is sold AS IS with no warranty. May not be available in all regions. 600W ValuLine Switchable Ballast The ValuLine Ballasts are a great priced garden lighting ballasts. The cases are powder coated galvanized steel, vented to provide cool operation. They have a vibration dampening system for noise reduction. They are very quiet. All ValuLine lighting can be run at 120 or 240 volts. No rewiring is necessary. They will all run either M.H. or H.P.S. bulbs. They come with a 120 volt power cord. 600W HPS and MH Lamps Boasting high lumen output and superior color spectrum, these bulbs will drive your garden to its maximum potential. More plant-available blues from the M.H. series to give your garden what it needs for early vigor and healthy branching. With more oranges and reds available from the H.P.S. lamps for your flowering plants to promote both quality and quantity in floral clusters.