... and control system for customers and ourselves. They are available in 24V,48V, 56V DC input and 110V,230V,380V AC ... .Applications: External rotor motor, centrifugal fan, centrifugal blower, axial fan in HVAC,Tele-communication, refrigeration, clean room, IT industry and air ... rotor brushless dc motor, EC motor, energy saving motor,etc. Low noise 48V BLDC Fan motor driver or controller with tach output