[Shop-talk] temp controlled light switch

[Randall]

> 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