Introduction - If you have any usage issues, please Google them yourself
System, electricity, liquid crystal display a small DC motor direction and speed grades, K3 keys to enter the motor running so that the electrical is run to eight seconds after the inversion stops three seconds to run 8 seconds stop 3 seconds, cycle after the reset so that the electrical停止. Running in motor, K2 and K3 key small button adjustable speed DC motor. Control principle is PWM (Pulse Width Modulation).