1.In the design, it is easy to install and can be preadjusted, including adjusting the idle speed and work, to assist for input multiple machines or special purpose machines, as well as to prevent reverse battery voltage, transient voltage pulse implementation of the shortcircuit fault and security in case of loss of speed sensor signal or power supply and so on. 2.Full closedloop control technology. Fast and accurate response to control engine speed 3.It is easy to install and can be preadjusted. For input multiple machines or special purpose machines. 4.The speed controller is a closedloop control of the entire electronic design. It responds quickly to instantaneous load changes and precisely controls engine speed when connected to the match. The implementation of espeed magnetic sensor signals can control a wide range of engines