Interesting, as the controller is in a fully sealed aluminum box, so freezer should not be an issue. It has even a Goretex membrane to let sweatwater from going in and out of a freezer devapurate from the controller box. We have 8 units in an soft ice production plant and they run just fine.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.