This Avantco 19386388 temperature probe is a direct replacement for the one that came with your Avantco display case. It is a vital part of your unit's refrigeration system, working to help your unit maintain the right temperature. A broken or malfunctioning temperature probe can prevent your unit from maintaining specifications and cause strain on other components, so be sure to fix it promptly. It's compatible with select Avantco BCT, BCF, and BC series 72" display cases.