If you wanted all five of the modes to run on a wash, then all five lights would light up, if you only wanted three modes to run, then only three lights would light up.

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The red Fire Warning light is bad news when it lights up, but you can silence the alarm bell by pressing it.

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Simply put, this means choosing lights that shine down, not up, and that emit light only in those parts of the spectrum that the human eye can perceive.

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Results from a global trial of light-emitting diode (LED) street lights confirm that the fixtures can deliver electricity savings of up to 85% over incumbent technologies.

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