"They're fairly inexpensive, and highly reliable, and they can handle considerable current without additional electronics thingies.
Here's one that should be right in your range.
-AC_Hacker"
Thanks! "On at 40 C, off at 32 C." I thought I'd want to leave shutoff closer to my indoor temperature, but I see that their range only goes up from that model. I suppose that if the collector is active, it will usually kick on the fan, since it hits 70 C pretty easy in still air. Has anyone tried these limits, and watched a partly cloudy day get wasted?
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