3Pcs DC 4.5V To DC 35V 5A 90W Mini DC Motor PWM Speed Controller Module Speed Regulator Adjustable Electronic Switch Mod

Specifications Operating voltage DC 4 5V DC 35VOutput current 0 5AOutput power 90W max Quiescent current 7uA standby PWM duty cycle 1 100 PWM frequency 20khzSize 30mm x 26mm x 14mmPrecautions DC motor governor input is DC can not directly connected to the AC for example home 220V AC otherwise it will burn DC power supply positive and negative terminals do not reverse otherwise the governor may be damaged The motor can be positive or negative when the direction of operation and expectations do not match you can adjust the line order to change the direction Adjust the potentiometer knob to change the governor output duty cycle the motor speed changes Package Included 3 x PWM DC Motor Speed Controller