The 1012-940-L Furnace Control Circuit Board HK42FZ009 is an OEM Certified unit designed specifically for Carrier Bryant furnaces. It is a single unit quantity and is compatible with the HK42FZ009 model. This control circuit board is essential for regulating and controlling various functions of the furnace, ensuring optimal performance and energy efficiency. With its reliable brand and model compatibility, this product is a dependable choice for HVAC and refrigeration systems in commercial and industrial settings.