Feature:1. ENHANCED PERFORMANCE: Effectively enhances motor speed and power, providing a noticeable boost in performance after replacement, suitable for motors up to 10000W.2. STABLE SINE WAVE CONTROLLER: The controller incorporates a sinewave control mechanism, ensuring stable performance and minimizing fluctuations. Perfect match for QS hub motors or mid drive motors.3. STRONG COMPATIBILITY: Equipped with self learning ability, providing easy pairing with QS motors and compatibility with new brands after a simple parameter setting.4. EXCEPTIONAL BATTERY GUARD: The controller not only protects the battery, but also extends battery life and enhances driving distance, making it an ideal power manager for your electric motorcycle.5. LONG LASTING DURABILITY: Made from high strength ABS, metal materials, this controller withstands high temperatures and wear, ensuring durability and long term stable use.Specification:Item Type: Brushless DC Motor ControllerModel: DK72690TB Material: ABS, metalRated Voltage: 72VBus Current: 300A 400APhase Current: 690ASpeed: 150km/h (The specific speed needs to be combined with vehicle weight and wind resistance)Maximum Input Current: 300A6AUnder Voltage Guard Value: 0.875 x VCC 1VMotor Control Mode: FOCBrake Mode: High Low level 12VUnder Voltage Guard: 62-64VOver Voltage Guard: 91-93VRated Power: 8640WPeak Power: 21600WLimited Value: 294-306AOperating Temperature: -20-60CApplication: Suitable for 10000W QS Motor Electric motorcycle mobility scooter.Package List:1 x Controller1 x Cover1 x Wiring5 x ScrewsNote:Professional installation is strongly recommended (with corresponding functional instructions on wiring). We also have an electronic version of the manual available.