Difference between revisions of "Sun switch"
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Revision as of 00:22, 25 February 2009
5-4-335
Sun relay Daylight control
A device operated by daylight that automatically controls a light, often electric, lighting it at or about sunset and extinguishing it at or about sunrise.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
