1,Working Performance: The AC motor speed controller is not only small in size, but also wide in speed range and long in service life. 2,High Quality Manufacturing: The transmission adopts high quality electronic circuits and integrated components and is durable. 3,Practicability: This is a speed governor with simple wiring and easy to understand, easy to install, save time and improve efficiency. 4,Absolute Exactness: AC motor speed controller has high control accuracy, which can realize micro control of motor speed. 5,Wide Applications: Transmissions are widely used in production lines in packaging, printing, food, electronics, instrumentation, medical equipment, and clothing industries as speed regulators. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.