Features: 1. With abnormal overload protection and power protection function 2. Speed can be adjusted via VR port. Speed control mode: one is voltage control: provide VR port 0 to 5V voltage. 3. Has locked-rotor protection function, if motors cannot start within 5s repeatedly, the module will stop outputting. Adjust the voltage VR port to 0v or turn off the power, the protection status can be removed 4. The function of speed pulse signal output, M port, read the machine's rotation speed. Depending on the motor, the output pulse count per revolution is different. 5. Enable function, EL port, High level (5v) motor work, low level (0v) motor stop. If the motor is less than 60W, you don't need a heatsink, more than 60W must add a heatsink, without a heatsink will reduce the driving efficiency, the temperature is too high will cause permanent damage! Working Voltage: DC 36V-72V Working Current: ≤15A Drive Power: ≤700W Voltage Regulation: 0V-5V PWM motor speed control frequency: 1KHz--10KHz Working Temperature: -40---85℃ Working Humidity: ≤90%RH Set: A NO Hall Version Material: PC+metal Color: green Package Contents: 1 x Drive Board (NO Hall Version) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3 cm. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!