Lascar DPM 40 3.5 Digit LED Voltmeter

LED - Light Emitting Diode - a small light source

Filter - A device used to separate mixtures

Filter - An optical device to remove or enhance particular wavelengths of light.

compact - Carefuly designed to ensure an item has a minimal physical size

Red - One of the three primary colours

Compact - something that has a lot combined within a small space.

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

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