The Taylor Freezer 63020SERX thermistor board, identified as the prior K5 version, is part of the temperature-sensing control system in compatible refrigerator and freezer equipment. It processes signals from thermistors for use by the equipment’s electronic controls during cooling operation. This board is relevant to commercial foodservice facilities that rely on Taylor Freezer refri... https://partsfe.com/thermistor-board-prior-k5-for-taylor-part-63020serx/1-63020SERX.html