Four speed regulation modes
Build-in potentiometer RV
Rotate the RV knob clockwise, the motor starts to run and accelerate. Motor speed will decrease if anticlockwise.
When it gets to a limited position, the motor stops.
![China Original Supplier | DC Motor Controller | Stepper Motor Controller | AC Motor Controller | Brushless Motor Controller China Original Supplier | DC Motor Controller | Stepper Motor Controller | AC Motor Controller | Brushless Motor Controller](http://www.purlance.com/upload/images/20190308_150453.jpg)
External potentiometer
Use a suitable potentiometer with a resistance value of 10KΩ, connect middle terminal with SV terminal, and the other two terminals are respectively connected with VCC terminal and COM terminal.
![China Original Supplier | DC Motor Controller | Stepper Motor Controller | AC Motor Controller | Brushless Motor Controller China Original Supplier | DC Motor Controller | Stepper Motor Controller | AC Motor Controller | Brushless Motor Controller](http://www.purlance.com/upload/images/20190308_150530.jpg)
Input analog signal (0-5V)
Voltage and motor speed relational diagram(unloaded)
![China Original Supplier | DC Motor Controller | Stepper Motor Controller | AC Motor Controller | Brushless Motor Controller China Original Supplier | DC Motor Controller | Stepper Motor Controller | AC Motor Controller | Brushless Motor Controller](http://www.purlance.com/upload/images/20190308_150635.jpg)
Pulse Width Modulation
Duty radio and motor speed relatoinal diagram (unloaded)
![China Original Supplier | DC Motor Controller | Stepper Motor Controller | AC Motor Controller | Brushless Motor Controller China Original Supplier | DC Motor Controller | Stepper Motor Controller | AC Motor Controller | Brushless Motor Controller](http://www.purlance.com/upload/images/20190308_150720.jpg)
Quick brake
BRK and COM are connected in default, the motor will be quick brake, When BRK and COM are disconnected, the motor will rotate.
![China Original Supplier | DC Motor Controller | Stepper Motor Controller | AC Motor Controller | Brushless Motor Controller China Original Supplier | DC Motor Controller | Stepper Motor Controller | AC Motor Controller | Brushless Motor Controller](http://www.purlance.com/upload/images/20190308_150807.jpg)
CW/CCW rotation
Connect F/R and COM, the motor will rotate clockwise, disconnect it, the motor will rotate anticlockwise.
![China Original Supplier | DC Motor Controller | Stepper Motor Controller | AC Motor Controller | Brushless Motor Controller China Original Supplier | DC Motor Controller | Stepper Motor Controller | AC Motor Controller | Brushless Motor Controller](http://www.purlance.com/upload/images/20190308_150848.jpg)