This product arrived with a difficult to adjust temperature control knob and then failed completely within 5 months, destroying an entire curing box worth of salamis and other cured meats. Amazon refused to help rectify the situation, instead giving me the manufacturers phone number and no other help.As a prime member, I can tell you I will NOT be renewing after the crappy customer service I was given.This poorly constructed piece of crp cost me hundreds in product and weeks of work. Don't make the same mistake I did. Purchase a different controller.