TruOpto OSHR3131A-NO 3mm Red LED Water Clear 3000mcd

LED - Light Emitting Diode - a small light source

LENS - An optical element which converges or diverges light

water - A chemical substance. Chemical formula H2O.

Red - One of the three primary colours

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

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