The Tritium Exit Sign uses tritium, a radioactive isotope of hydrogen, to illuminate this fixture's letters in glowing green. Instead of the incandescent bulbs or LED lights that traditional exit signs use, the Tritium Exit Sign uses tubes of gas, that when combined with phosphor, create a glowing effect. This exit sign does not use a battery pack or AC connection because it does not need one - there are no electrical components to power. The illumination produced by this fixture is completely self-powered and self-contained because there is nothing to hardwire it to.
There are many advantages to an exit sign like this. Because the Tritium Exit Sign is self-luminous, there is no battery pack to charge or replace. Once installed, this exit sign will provide up to 20 years of illumination with absolutely no maintenance requirements. The Tritium Exit Sign can also be installed in locations that do not have an easily accessible AC connection or in environments containing moisture.
When the emitted electrons from tritium decay come into contact with phosphor, a bright green illumination is produced. Although tritium is a radioactive gas, these exit signs are completely safe for commercial use. Depending on the options selected, a Tritium Exit Sign will last either 10 or 20 years with no need for maintenance.
The tritium gas contained within this fixture is enclosed in borosilicate glass that is shatter-proof. The thermoplastic housing with 1/8" thick polycarbonate faceplate ensures this fixture is durable. The sturdy materials and snap together design make the Tritium Exit Sign a rugged fixture that is tamper-proof and will stand up to moderate abuse.
The Tritium Exit Sign can be used both indoors and outdoors because it contains no electrical components, making it suitable for wet locations. It can even be used in freezing environments because there is no battery that can fail. They are quite popular for outdoor applications that either do not have access to electricity or are hard to connect to.
This fixture back mounts flush to most nonflammable surfaces or can be top mounted to the ceiling. It is possible to configure this exit sign as either a single or double-sided so "EXIT" will be displayed down opposite lengths of a hallway. This fixture mounts easily with the included hardware in under 15 minutes because there is absolutely nothing to hardwire to the building's power source.
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