Hmm. I can't find the exact unit I'm using, and I note that mine is line
voltage instead of low
voltage, which will probably change what you can find. McMaster has some round
style) that go down to 40.
For freeze protection, I use the thermocube:
Again, though, it's line voltage. I didn't know about them when I bought my
thermostat, or I would have used this.
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