The Keystone Electrical Ballast is made to limit the
current passing through any connected fluorescent lamps. The simple device
helps prevent the current in the lamp from rising to a destructive level. The
ballast can control 1 or 2 lamps, as desired. Lamps are sold separately. The
ballast is capable of operating at a range of voltages, from 120 volts to 277
volts. The instant start works in temperatures as low as 0 degrees Fahrenheit.
A 5-year warranty is included. Keystone ballasts are UL rated. Shipping is
fast, going directly from our warehouse to your site.
For questions about the Keystone Electrical Ballast,
or for help ordering, please call our customer service department at
1-888-454-4480 or use our online chat system. Our knowledgeable agents are glad
to help answer questions and make sure you choose the right ballast for your