Feature: 1. The angle at which the potentiometer deviates from the midpoint is the speed of the motor. That is, the larger the deviation angle is, the faster the speed is, and the midpoint is stopped when it is adjusted. 2. The product is equipped with a joystick potentiometer,which makes speed controller stop when at midpoint. 3. The motor can be wired without distinguishing positive or negative. When the running direction is inconsistent with the expected direction, the running direction can be changed by adjusting the line. 4. PWM speed controller,small effected by noise. 5. Integrated with overcurrent protection,can protect the controller and motor well. Specification: Item Type:Motor Speed Controller Input Voltage: DC 12-30V Rated Current: 3A Maximum Current: 6A (With Hall Current Detection Chip, Stop Output When The Instantaneous Top Value Is Greater Than 6.4A) Speed Range: 0%-100% Applicable Power: Within 12V50W, Within 24V100W . Package List: 1 x Module Note: 1. DC motor governor input is DC, not directly connected to AC power, otherwise it will burn out 2. The positive and negative poles of the DC power supply cannot be reversed, otherwise the governor will be damaged. 3. The motor can be wired randomly without distinguish positive or negative, when the running direction is inconsistent with the expectation. The direction can be changed by the line adjustment sequence. 4. The potentiometer knob can change the governor output duty cycle to change the motor speed.5.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.