it’s a shame you never registered for the site and will probably never see any replies. But PartsTown is the best way to get a replacement. I will caution you that it has been replaced with a newer version that requires a bit of rewiring. This is the current one as far as I can find: https://www.partstown.com/structural-concepts/stc21-30830. But I was unable to verify the voltage. A lot of the temp controllers today are multiple voltages.
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