The self luminous sign works because of the radioactive isotope tritium which is pumped into shaped glass tubes in order to produce a lighted sign. This is a good thing for all types of industries because they can continue to progress without sacrificing the safety of their employees and customers in order to save money. The sign has not only increased energy efficiency for most businesses but also has saved them money in the process. With the invention of the self luminous signs the fears many companies had of driving up electricity costs through their exit signs is a thing of the past. This is because many of the signs used commercially were based off of light bulb technology that often drained countless watts of electricity per month sending electric bills skyrocketing. The exit sign has not always been as efficient as it is now and it took many decades for the sign to get to this point of efficiency. ![]() The self luminous sign is appropriate for a range of uses though they have traditionally been pretty expensive to buy until recent times.
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