Use this Avantco 17811962 Carel black probe sensor to replace the sensor that came with your Avantco Carel 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 GF series chillers and DDLC series deli cases