This Avantco 19386389 high 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 high 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 BC, BCF, BCT, and BCR series display cases.