1.Do not directly connect AC power supply (e.g.110V AC).The input voltage of this controller should be DC,otherwise it will burn out

2.The positive and negative poles of the power supply cannot be reversed

3.The positive and negative poles of the motor can be reversed.When the operation direction is inconsistent with the expectation,you can change the direction by adjusting the order of lines.

4.Adjust the potentiometer knob to change the output load cycle

5.Short-circuit time shall not exceed 30 seconds