Battery Backup
Products with battery backup contain a battery so in the case of a power outage the lights or signs with stay illuminated for roughly 90 minutes.
Photoluminescent
Photoluminescent (PL) or "glow in the dark” exit signs are a non-electrical, maintenance free signage option. They provide exceptional reliability and efficiency and do not require electricity or batteries to operate. PL signs only need another ambient light source for charging, making them very simple and affordable to maintain. Our selection of Photoluminescent exit signs from Glo Brite, Sure-Lites, Exit Glo, also comply with NYC Local Law 26 building and fire safety codes.
Tritium
Tritium lumination is the use of gaseous
tritium, a radioactive
isotope of
hydrogen, to create visible light. Tritium emits
electrons through
beta decay, and, when they interact with a phosphor material,
fluorescent light is created, a process called
radioluminescence. As tritium illumination requires no electrical energy, it found wide use in applications such as emergency
exit signs and illumination of wristwatches. More recently, many applications using
radioactive materials have been replaced with
photoluminescent materials.
