Signal Construct MWCB22429 Multi-Look BA9s Blue LED Indicator 12VAC/DC

LED - Light Emitting Diode - a small light source

DC - Direct Current

AC - Alternating Current

LENS - An optical element which converges or diverges light

Blue - A primary colour

LED - Light Emitting Diode. A bulb that is very efficient at producing light. Often small.

Wide - Something with a large width.

Combination - The process of two of more things being mixed or combined together.

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