Feature:1. Applicable Model: The brushless DC motor speed controller is applicable for QS Motor Electric Motorcycle Mobility Scooter with power up to 10000W.2. Stable Sine Wave Controller: Features a sine wave controller design that provides consistent efficiency without fluctuation, perfect match for QS hub motors or QS mid drive motors.3. Effective Motor Control for Enhanced Speed: This controller significantly enhances the motor's speed, effectively boosting the motor's power once replaced.4. Extended Lifespan: With added self learning function offers excellent commonality and allows for easy calibration to other motors, extends battery lifespan and driving distance.5. Premium Material for High Durability: Made from premium materials that withstand high temperatures and corrosion, ensuring a long lasting stable operation.Specification:Item Type: Brushless DC Motor ControllerRated Voltage: 72VBus Current: 300A/400APhase Current: 690ASpeed: 150km/hMaximum Input Current: 300A6AUnder Voltage Protection Value: 0.875xVCC1VMotor Control Mode: FOCMotor Hall Type: 120 degrees/60 degreesBrake Mode: High (12V)/Low LevelUnder Voltage Protection: 62-64VOver Voltage Protection: 91-93VRated Power: 8640WPeak Power: 21600WLimiting Current: 294-306AHall Supply Voltage: 4.3VOperating Temperature: -20-60CFitment: Fits for QS Motor Electric motorcycle mobility scooter up to 10000W.Package List:1 x Controller1 x Cover1 x Wiring5 x ScrewNote:Highly recommended for professional installations, (wiring has corresponding functional instructions)