ActronAir BMS Interface Card ICAMIB-MOD is the factory-fitted bms interface card icamib-mod for Classic Series 2 residential split ducted systems, managing MODBUS 485 BMS integration, system ON/OFF, zone control, and compressor capacity management. A failed board causes loss of all BMS integration and building automation control -- fit the 100% Genuine ActronAir ICAMIB-MOD to restore factory system performance. Isolate power at mains before replacement -- live work on electrical components is dangerous and must only be performed by a qualified technician.