1、Reliable and Stable: This DC motor governor is an electronic control method to regulate the working speed, reliable and stable performance, and can be used at ease. 2、6 to 90V Ultra Wide Range: This DC motor governor can do 6 to 90V range use, so you can use a wider range of products without worrying about the performance of the product is not enough. 3、No Positive or Negative Motor Connection: This DC motor governor can be connected without any positive or negative direction, and the direction can be changed by adjusting the wire sequence. 4、Safety Protection: This DC motor governor needs to adjust the knob to the 0 position when using, slowly adjust the knob to raise or lower the voltage, not instantaneous rise or fall, the voltage meter is lower than the supply voltage off, for your use of safety protection. 5、Scope of Application: This DC motor speed regulator is only used for brush DC motors, not for brushless DC motors, can not be used as a voltage regulator.