How much do photoluminescent exit signs cost? Photoluminescent signage requires a light source from which to absorb photons, but it can burn for up to ninety-six hours in total darkness. Photoluminescent signage is powered by photoluminescence, which occurs when an object absorbs photons from ambient light and re-radiates them, creating a bright glow. To help those who are considering implementing self-luminous exit lights in place of electrical ones, we answer frequently asked questions about self-luminous exit signs. If this describes your building, replacing its standard lights with photoluminescent ones could bring several benefits, including improved sign visibility when smoke is present, lower operating cost, and improved sign durability. Nevertheless, some buildings—particularly ones in states that have not adopted International Fire Code (IFC) regulations—have yet to implement them, and still contain standard exit lighting. Thanks to evacuation studies and code requirements, self luminous egress solutions are more popular than ever in U.S.
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