Werma Signaltechnik 424.120.75 LED/Horn Combination 424 Red 24VDC

LED - Light Emitting Diode - a small light source

Diameter - A measurement across a circle passing through the middle

Grey - A colour often associated with old age (going grey)

Wall - A physical barrier between two areas

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.

Permanent - Something that is long term and most likely to be around forever.

Dome - A curved shape usually seen on building structures.

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

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