Use this Avantco 22473549 black temperature probe to replace the one that came with your Avantco temperature controller. The temperature controller inside your Avantco refrigeration equipment relies on a functioning sensor to accurately read and adjust the temperature. Replace a worn or damaged sensor right away to ensure your unit is operating at food safe temperatures. It's compatible with Avantco WHAC, BHAC, BCAC, and BC series merchandisers and display cases.