The Mitsubishi Electric E27K05447 Indoor Controller Board is an electronic control component designed for compatible indoor air conditioning units and ductless mini-split systems. It processes signals from sensors, thermostats, and user controls to coordinate indoor unit functions, including fan operation and temperature regulation. This control board helps maintain accurate system re... https://www.partshnc.com/e27k05447-mitsubishi-electric-indoor-controller-board