=>> I have Googled the net for an hour now looking for a source of one
=>> two surface-mount thermal snap switches to no avail. I'm looking
=>> cheap (operative word--cheap)unit the will close on drop to about
=>> and open somewhere above 30F. Lots of Airpax and Honeywell stuff
=>> there, but I'm interested in building a freeze-protection system
=>> not to instrument the space shuttle.
=>> Can anyone out there point me to a small-quantity source?=>There aren't many snap switches that operate at that temperature. It
=>difficult to get consistent operation below ambient temperature.
Most of the
=>ones you will find operate at much higher temperatures and are
=>provide high temperature limit.
=>There are some filled bulb type thermostats known as "cold
=>are used in icemakers, refrigerators, etc. for the exact type of
=>are doing. The bulb is a small cappilary tube that you can mount to
=>surface or hang in the air. I think Grainger carries some as
=>parts. They are relatively cheap.
Thanks, Ben. I guess that's why I'm having the problem. I'll try new
parameters for a search per your suggestions and see what comes back.