PWM DC speed control board is suitable for permanent magnet or excitation brush DC motor! It has the advantages of high power, high torque, constant low speed, strong anti-interference, etc. It has completed the replacement of KBIC BC2000 and other foreign speed control boards. Suitable for: net frame pole cutting and welding equipment on the low-speed motor speed control use, home lathe milling machine, DC gear motor and other equipment motor use.