The reliable Glo Brite Safety Guidance System is a complete system of photoluminescent safety components essential to a comprehensive emergency evacuation route. Non-electric, non-toxic and non-radioactive, the Glo Brite Safety Guidance System absorbs and stores ambient light that is immediately visible in the event of a blackout or heavy smoke conditions due to fire. NYC Compliant Ref . # 2.2.8., MEA Number 239-05-M