The HK42FZ011 Gas Furnace control board is a 1-inch thick unit designed for use with Carrier, Bryant, and Payne HVAC units. This control board is specifically designed for gas furnaces and operates on a 24V power source with a 1-phase power phase. Made of plastic, it is compatible with models 1012-940 and HK42FZ011, making it suitable for central furnace systems in various industrial and residential applications.