This circuit control board is designed for use with various HVAC equipment and refrigeration units, including heat pumps. It is compatible with several brands, including First Company, Carrier, SOURCE, Goodman, and Trane, and is specifically designed for use with the First Company CB401 model. Crafted from durable materials like PCB (Printed Circuit Board), this water source heat pump control board is 1.5 inches thick and weighs just 0.5 lb. Making it easy to install and operate. This control board is manufactured in the United States and comes with a First Co.