Most features are operated by pressing the end-cap power switch for two seconds, and work well.

It warned a dodgy window power switch could short-circuit, causing parts to overheat, and potentially lead to a fire.

Compact and attractive, if a little plasticky, the main unit has a single power switch, with the rest of the controls moved to the large remote.

It usually consists of an enclosure, a variety of electrical components, and often a power switch.

There may be a power switch or a voltage selector switch or both.