To insure that you are not left in the dark during a power outage or disruption of power, install one of our T5 emergency ballasts. These quality emergency ballasts will illuminate your T5 fixture at the spacified light output level for a minimum of 90 minutes. Improve the safety of your facility by adding T5 emergency ballasts to your system. Ballasts are rated by lumen output. In the event of a power failure these units will switch to emergency mode and begin powering either one or two lamps for a minimum of ninety minutes.Each unit contains a battery, charger, and invertor circuit in a single UL listed package.