An emergency lighting solution for most existing fluorescent and CFL fixtures


Emergency situations require dependability. When power fails, trust Keystone’s fluorescent emergency ballasts to keep the area safely lit. Keystone’s emergency fluorescent ballasts allow job sites to stay ahead of building code requirements. Once normal lighting is restored, the ballast will automatically recharge itself so it’s ready whenever the next power failure occurs.

Our line of fluorescent emergency ballasts may be used with many lamp types, making these the ideal emergency lighting solution for virtually any fixture.

Fluorescent emergency ballast benefits

  • Stay prepared with an automatically recharging ballast
  • Save hassle with an emergency ballast for virtually every lamp and fixture type
  • Powers one or two lamps for minimum of 90 minutes with up to 1400 lumens

Product Features

  • For use in new or existing fixtures, with or without an AC ballast
  • Operates one lamp in emergency mode
  • 2-in-1 LED indicator light and push-to-test switch (for mandated code compliance testing)
  • Internal battery automatically connects to the fluorescent lamp(s) for minimum of 90 minute emergency illumination via an internal solid-state transfer switch
  • A discharged battery completely recharges in 24 hours, via a fully automatic solid-state, two-rate charger
  • Features a time delay technology which helps to overcome end-of-life circuit protection (select models)
  • Usable in sealed and gasketed fixtures (select models)
5 Year Warranty

Tech Specs

The Keystone Difference

Free samples

Friendly customer service

Fast quotes

Quick delivery

Industry-leading warranty

U.S. based