Photoluminescent Exit Signs are non-electrical and non-radioactive. The signs are listed for high-location and floor proximity installation. Charged by 5 foot candles (54 Lux) of ambient lighting, they release their Code compliant luminance, should building lighting fail (power outages, natural disaster, building fire with smoke).
PERMALIGHT® exit signs have no light bulbs that could break and no electrical wiring. They are UL-and ETL-listed for the U.S. and Canada, and have NO expiration date (life expectancy of 25+ years). Material choices are elegant Acrylic EXIT Signs that come with stand-off barrels, photoluminescent Plastic EXIT signs inside silver-colored brushed Aluminum Frame, and sturdy durable Aluminum Signs.