cold-temperature thermostat

[Matt]

I need a thermostat with settings near the freezing point. I would set it near say 35 to 40 degrees F so that it could control an electric space heater to maintain a temperature a little above freezing. Hopefully it wouldn't cost more than about $20. Can anybody point me to something like that? Thanks.

[Joseph Meehan]

Controlling what voltage, amperage or mechanic device?

[David Martel]

Matt,

Mr Meehan's questions are apropos. Assuming we're talking about 120 v with a fairly low current then a refrigerator thermostat would work. Head to the dump and see what they have. If the thermostat won't handle the heater's current draw then a simple solenoid circuit using the thermostat will work but may cost more than $20. $20 is a low budget since you will want to put this in an insulated box to prevent accidents.

Good luck, Dave M.

[Travis Jordan]

[Me]

I bought one at the autoparts store for $25. It is adjustable from

30 to 150 degrees and comes with a 12 v relay which you don't have to use. .

[Matt]

Thanks. What is it called and what is the approximate automotive application?

[Matt]

Thanks. That heating outlet is about what I need, but the 45 degree turn-off temperature is probably too high.