This dual voltage, magnetic relay HPS ballast runs two lamps non-simultaneously, flipping 12 hour cycles from one lamp to another.
For Example: Lamp A in the first room will automatically turn off after 12 hours and switch to Lamp B in the second room for 12 hours.

• High quality ballast will insure years of reliable use
• Coated aluminum ballast enclosure with louvered slits dissipating heat and keeping components cool 
• American made capacitor and ignitor parts insure a long and durable life
• Multi-Volt - switch from 120 volt to 240 volt with ease. 120 volt cord included. Purchase a 240 volt cord separately (#903082)
• Includes attached 120 volt trigger cord for use with any standard timer to manage your 12 hour cycles
• Rubber feet on the base reduce noise and vibration
• Features a 5 year warranty (3 year plus 2 year prorated for repair or replacement)