Carte d'extension 2-stage m2 De Dietrich 200004203

The option board 2-stage m2 is an add-on control module that enables two-stage operation for compatible burners or boilers. This board allows the heating system to run at a lower output during milder conditions and switch to full power when demand increases, improving energy efficiency and comfort. It integrates with existing control systems and is straightforward to install. Ideal for upgrading older single-stage systems, this option board provides greater flexibility and can help reduce fuel consumption while maintaining consistent heating.