The 2A7664-02-A 6078F000-99 HOS-2A7664-02-B Control Board by Hoshizaki is a main control board designed for use in refrigeration equipment, specifically ice machines. This unit is made by the reputable brand Hoshizaki and is sold as a single piece. The control board is designed to operate in ounces and is a crucial component for maintaining and repairing refrigeration equipment in various settings, particularly in the restaurant and food service industry.