... run independently or combined together by microcomputer control module unit, max to 32 units.Water Cooling Air ... ×1900Protective Device1,Phase protector2,Fan overload protector3,High/low voltage protector4,Coil overheat protector5,Anti-freeze protectorDisposition1, ... Contactor,Carlo Phase3,Punp Brand Micro Computer ProcessorHigh stability. Low noise, longer life to use, automatically control, easy to ...