- block commutation - for EC motors up to 50W Features • - sensorless * • - speed controller • - 1 analogue input speed controll 0-1V or high-ohm = Stop; 1-4,5V = Duty Cycle PWM 0-99% • - 1 digital input speed controll 0 - 1,6 V or high-ohm = right; 3,9V - 5V = left • - option start without external controller • - option counter-clockwise rotation without external controller • - overcurrent protection