Jessup Glo Bright 7001-B Single Face Non Electrical, Glow-in-the-dark (Photoluminescent) Exit Sign with Bracket (Black with Green Glowing Text, 8-Inch x 15-Inch) Glo Bright Zero-Electricity Exit Signs are designed with the latest photoluminescent technology, allowing them to absorb ambient light and then release it in the event of an emergency or blackout. The bright green glow can be seen from up to 50 feet away in total darkness, reducing the risk of panic or injury during an evacuation. This sign is non-toxic, non-radioactive, and requires no electricity to operate. It meets OSHA requirements, Life Safety Code 101, and is listed to UL 924 for egress indicators. An included bracket provides easy surface, ceiling, or flag mounting options.