ActronAir CM100 Commercial Outdoor Control Board is the factory supplied and fitted outdoor control board for Tri-Capacity split ducted and package systems, providing PI compressor algorithm control, adaptive demand defrost, and Building Management System compatibility via MODBUS, BACNet 485 and BACNet TCP/IP. A failed CM100 board causes complete loss of system control and compressor management on Tri-Cap series units — fit the 100% Genuine ActronAir 2020-136TRI to restore factory system performance. This component is factory supplied and fitted — confirm application suitability with our team before ordering.