This Avantco 19386387 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 Avantco BCT, BCF, and BC series display cases.