S-shaped light bulbs are miniature light bulbs used in a number of crucial applications across several industries including aviation, auto, healthcare and manufacturing, to name just a few. S-shaped bulbs are commonly used as the source of light for important indicator lights on a number of machines - which means that when they go out, you'll have nothing to let you know that something is wrong with your appliance or vehicle. Thus, it's important to test S-shaped bulbs on your machines and replace them as quickly as possible should you find one or several have burnt out.
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