What Are Panel Indicators? Distributor Alan Butcher Components helps to explain. Panel indicators are optoelectronic devices which emit light to show the operating condition of a machine or appliance. Manufacturers and distributors use various terminologies for this type of product which can be confusing when trying to source an item, particularly on-line: Signal lamps Signal lights Indicator lights Indicators Panel indicators Pilot lights Essentially, the above terms all describe a light .
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