The Johnson Controls MR4PMUHV-12C Digital Defrost Control is an electronic refrigeration controller used in compatible commercial refrigerators and freezer systems. It manages temperature regulation, compressor operation, evaporator fan control, and automatic defrost functions within refrigeration equipment. This control features a digital display, programmable settings, and a 6-foot ... https://partsfe.com/mr4pmuhv-12c-johnson-controls-controldefrost-digital6-ld