![]() Power free exit signs or Glow in dark exit signs can last up to 25 years. We carry self luminous tritium exit signs in a variety of colors (red, green, black, & white), frames (black, chrome or white), and lifespans (10 year, or 20 year). Photoluminscent Exit Signs Are Environmentally Friendly. Radioluminescent tritium exit signs also require no electricity or battery power, and do NOT require an ambient light source for charging - they are completely self-contained. We carry a variety of aluminum photoluminescent exit signs, UL listed photoluminescent exit signs, decorative photoluminescent exit signs, 75' & 100' photoluminescent exit signs, and photoluminescent emergency egress signs. Requiring no power source, photoluminescent products can be installed easily in any location (ambient light source required). In the event of an emergency involving blackout or smoke-laden conditions, the photoluminescent product is immediately visible, providing a safe, illuminated evacuation path. Because the toll plaza is on the Oakland side, the western span is a de facto non-tolled bridge traffic between the island and the main part of San Francisco. If you have any other questions, please call our customer service number - 84. Additionally, they are also available online at under the Downloads section on the product page. Photoluminescent tape and photoluminescent emergency egress signs absorb and store energy from ambient light (requires 54 LUX or 5-ft candles of LED, fluorescent, metal halide or mercury vapor light to charge material for 60 minutes). Instructions are included with most every exit sign or emergency light (s) that ExitExpo sells. ![]()
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