NFPA 101®, Life Safety Code® 7.9.3 & 7.10.9 require that exit signs and emergency lighting systems be maintained according to the following:

• visual inspection of the equipment once every 30 days
• 30 second illumination test under battery-backup power performed once every 30 days
• 90 minute illumination test under battery-backup power performed once every year
• written records of visual inspections and tests to be kept for inspection by the authority having jurisdiction