Feature 1Brushless Controller: The controller is designed for QS Motor Electric motorcycle mobility scooter no more than 5000W, could control your motor efficiently for enhanced speed and power. 2Premium Material: This 72V brushless DC motor controller is made from premium materials that are both high temperature resistant and rust resistant, ensuring prolonged and stable use. 3Enhanced Motor Control: Designed to effectively manage motors, this controller, when replaced, can significantly boost the speed of the motor and effectively increase motor power. 4Stable Sine Wave Control: The controller utilizes sine wave control, offering stable performance free from fluctuations. It works ideally with for QS hub motors or for QS mid drive motors. 5Battery Protection and Extension: This DC motor controller not only guards your battery, but it also extends its lifespan, adding to the ride distance. It includes a self learning function and excellent commonality. Item Type: Brushless DC Motor Controller Model: DK72420S Bus Current: 70/150A Phase Current: 420A Speed: 115km/h (Specific speed needs to be combined with vehicle weight and wind resistance) Fitment: Fits for QS Motor Electric motorcycle mobility scooter 5000W Package List 1 x Brushless DC Motor Controller 1 x Wiring Harness 5 x Screw Note Installation by a professional mechanic is highly recommended