• DC motor governor input is DC,can not directly connected to the AC(for example:home220V AC),otherwise it will burn!
• DC power supply positive and negative terminals do not reverse, otherwise thegovernormay be damaged. 
• The motor can be positive or negative, when the direction of operation and expectationsdo 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 speedchanges

• Operating voltage: DC4.5V-35V
• Output current: 0-5A
• PWM duty cycle: 1% -100%
• Output power: 90W (max)
• Quiescent current: 7uA (standby)
• PWM frequency: 20khz
• Size: 30mm x 26mm x 14mm (Without Handle) 

Package Included:

• 1 x PWM DC Motor Speed Controller