Kingbright L-424IDT 3mm 2V High Efficiency Red LED Cylindrical

LED - Light Emitting Diode - a small light source

Diameter - A measurement across a circle passing through the middle

Red - One of the three primary colours

Colour - The categorised spectrum of light visable to humans

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

Reliable - Something that is consistently good and can be trusted.

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