BS EN 61209:1999, IEC 61209:1999

Electric - A general term for the flow of electric charge

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

Radio - A device used for listening to audio transmissions

water - A chemical substance. Chemical formula H2O.

Equipment - A product or good that is tactile.

Performance - When someone is presenting a form of entertainment, also how well someone is doing within a role.

Transport - Something that carries people or goods.

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