CAP Xtreme Copper magnetic core Ballasts are the best garden lighting ballasts available. The cases are extruded aluminum to provide cool operation with a vibration dampening system for noise reduction. They are very quiet. All CAP Xtreme Ballasts can be run at 120 or 240 volts. No rewiring is necessary. They will all run either M.H. or H.P.S. bulbs. Includes a 120 volt power cord. Xtreme ballasts carry a Lifetime manufactures rebuild or replace warranty.