> My neighbor is going south for the winter and wants a switch that
> will light a lamp when (if) the house falls below a set temp like 50F.
You mean like this ?
http://tinyurl.com/2hps7u
Another thought, if this is supposed to be a backup plan in case the main
heat fails or whatever, might be a mechanical thermostat (from HD or
wherever) combined with a car battery and 12V lamp.
Randall
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