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How do Power Free Exit Signs work?

  Author:Lights&Lighting E-Commerce   2020-09-18 Read:0

How do Power Free Exit Signs work?

Power-free or “wireless” Exit Signs do not need to be hard-wired to a building’s electricity. Instead they receive their illumination from other energy sources. Photoluminescent Exit Signs, for example, are illuminated via the action of photoluminescence. Energy in the form of light is absorbed by the special coating and stored in much the same way as a “glow-in-the-dark” toy. This stored energy is then re-emitted as light, making the light "glow". Visit our "Photoluminescent Exit Signs Resource Guide" for more information.

Tritium Exit Signs use tubes filled with tritium gas that stay illuminated for either 10 or 20 years, depending on the model chosen. These require no maintenance, power, or charging but still emit enough light to meet code. Tritium is used in many applications such as watch dials and optical sights. Visit our "Tritium Exit Sign Resource Guide" for more information.


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