![]() ![]() LED-based lamps have a significantly longer lifespan than incandescent bulbs, thus reducing maintenance costs and increasing reliability. A recent development has been the use of arrays of high-power red LEDs in place of incandescent bulbs, which has only been possible since the development of LEDs of sufficient brightness. ![]() ![]() To improve the otherwise quite short lifespan, they are made with a ruggedised design and are run below normal operating power (under-running). Traditionally, red lamps (or beacons) use incandescent filament bulbs.
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