The Mitsubishi Electric E22D21444 Noise Filter Control Board is designed to be used with corded electric power sources, specifically operating at 208/230V with a power phase of 1. This control board serves as a reliable and efficient solution for controlling noise filters in HVAC and refrigeration systems, ensuring optimal performance and functionality. With the trusted brand of Mitsubishi behind it, this model is a proven choice for those in need of a high-quality noise filter control board for their industrial or commercial settings.