The White Rodgers 21D83M-843 Furnace Control Board is a high-quality replacement part designed for use with Lennox 83M00 and 50A66-122 models, as well as other compatible brands and models. This control board operates on 25V of voltage and 50A of amperage, making it suitable for a variety of HVAC systems. Made by White-Rodgers, a trusted brand in the industry, this furnace control board is manufactured in Mexico and weighs 2 lbs. It is a reliable and efficient component for maintaining and repairing heating systems.