DOMO relay board + 3 test De Dietrich 88065531

The DOMO relay board plus 3 test is a pre-tested electronic module that controls relays in DOMO heating systems. This board manages switching functions for pumps, valves, or burners, ensuring reliable operation. The included three tests verify its functionality before installation, saving time and preventing troubleshooting. Ideal for boiler spare parts replacement, it restores proper control to your system. Designed for easy integration, this relay board is a practical solution for maintaining efficient heating equipment.