... from 12V to 56VDC, 0-10V/PWM speed control, tache output, fault alarm, easy to control speed and saving 40% energy ... ,48V, 56V DC input and 110V,230V,380V AC input.The functions include PFC (passive), control input 0-10 VDC / PWM, output 10 VDC max 1 ... noise 48V BLDC Fan motor driver or controller with tach output