Features The controller is integrates with soft rectifier function. With over current protection and reverse connection protection. The board can control the motor speed during 5~100%. With a potentiometer to adjust the speed of the motor. The controller board can also control the rotation direction of the motor. Feature: 1. The controller is integrates with soft rectifier function. 2. With over current protection and reverse connection protection. 3. The board can control the motor speed during 5~100%. 4. With a potentiometer to adjust the speed of the motor. 5. The controller board can also control the rotation direction of the motor. Specification: Item Type:Motor Driver Board Working voltage: DC7.5V-18V Working current: ≤ 3A Speed voltage: 0.25V-5V Speed range: 5%-100% Drive power: 30W Wiring instructions: 1. Control terminal: 5V: Driver board output voltage, external speed potentiometer when used (empty when not in use) ZF: Motor rotation direction control terminal, grounding or 5V can change the direction of the motor (can be left, the steering is fixed) VR: speed signal input, voltage 0.25V-5V (when the voltage of the motor is less than 0.25V the motor does not rotate) GND: shared control terminal 2, the output: Power +: Connect the positive pole of the power supply, the voltage is 7.5volts 18V --- Power - : Power ground, then power negative MA / U: Turn off every three wires of the motor MB / V: every three lines of the motor MC / W: every three lines of the motor .w-e-text table td,.w-e-text table th,;.w-e-text table, Package List: 1 x Brushless Motor Driver Board 1 x Speed Adjuster + Positive and Negative Switch 1 x 5Pin Output Control Cable(Random Color) Note: In order to drive the motor better and more efficiently, we have divided it into 2 specifications.(Can be programmed) 1, 12V ordinary, working voltage range 7.5V---18V, the highest speed 3000 rpm 2, 12V high speed, working voltage range 7.5V---18V, the highest speed reaches 50,000 rpm Package List 1 x Brushless Motor Driver Board 1 x Speed Adjuster + Positive and Negative Switch 1 x 5Pin Output Control Cable(Random Color)