Warm Tips: 1. DC motor governor input is DC, not directly connected to AC, otherwise it will burn out. 2. DC positive and negative terminals do not reverse, otherwise the governor may be damaged. 3. The motor can be divided into positive and negative directions. When the direction of operation is not consistent with the expectation, the direction can be changed by adjusting the line order. 4. Adjusting the potentiometer knob can change the duty cycle of the governor and change the speed of the motor