Feature 1Applicable Model: The brushless DC motor controller is for QS Motor electric motorcycle mobility scooter less than 4000W. Please confirm whether it is consistent with the product you want before buying to avoid unnecessary return. 2Premium Material: Constructed using high strength aluminum alloy and ABS materials, this motor controller provides excellent durability, resistant to high temperature and erosion. 3Enhanced Performance: The motor speed controller effectively controls the motor to significantly enhance speed, with the ability to offer maximum speeds of up to 115km/h thereby increasing motor power. 4Sine Wave Type Controller: The sine wave controller provides stable performance with minimal fluctuations, optimally designed for QS hub motors or for QS mid drive motors. 5Self Learning Function:Equipped with a self learning function and impressive versatility, the controller is suitable for adapting to various motor models, providing added convenience.Item Type: Brushless DC Motor ControllerRated Voltage: 72V (36-100V, Default 72V)Bus Current: 150APhase Current: 400AMaximum Speed: 115km/h (The specific speed needs to be combined with vehicle weight and wind drag)Fitment: Fit for QS Motor Electric motorcycle mobility scooter 4000W Package List1 x Controller1 x Transparent Cover5 x Screws2 x Wiring