Screened Security Cable 4-core

Aluminium - Corrosion resistant lightweight metal

PVC - Polyvinyl Chloride - A type of insulating plastic

Jacket - A type of garment worn on the upper body usualy outdoors. Also know as an anorak or parka

Copper - A metal element with a chemical formula of CU. A excellent conductor of electricity and heat.

Black - A colour which does not emit any colour of the spectrum. Black absorbs all frequencies of the spectrum.

Diameter - A measurement across a circle passing through the middle

Alarm - A device which emits a sound at a pre-set time/event

Blue - A primary colour

Yellow - A primary colour. The sun is often described as yellow

Cable - A series of wires bonded to form a single thread

Red - One of the three primary colours

Colour - The categorised spectrum of light visable to humans

Size - is the measurement of how big an object is in space.

Voltage - A measurement of volts.

Primary - the beginning of something, of chief importance.

Ideal - Something that satisfies a perfect criteria.

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