Feature: 1. Increase Motor Power: Our controllers effectively control the motor, which can significantly increase the speed of the motor and effectively increase the power of the motor. 2. Stable Performance: Electric motorcycle controller is sine wave type controller, the effect is stable, not easy to fluctuate, which is brushless DC controller with self earning function. 3. Powerful Function: Sine wave controller can protect the battery and extend its life, also has the capability to increase the driving distance, providing you with an enhanced riding experience. 4. Premium Material: Electric motorcycle controller is made of metal and ABS, high temperature and erosion resistance, professional manufactured to ensure stable performance and high reliability. 5. Fitment: Generally, it matches well with QS hub motor or QS mid drive motor, if you want to match with new brand motor, some parameters should be tested by yourself. Specification: Item Type: Electric Motorcycle ControllerMaterial: Metal+ABS Rated Voltage: 72V (36-100V, default 72V) Bus Current: 50-65A Phase Current: 240A Speed: 85 km/h (Specific speed needs to be combined with vehicle weight and wind resistance) Under Voltage Protection Value: 0.875 x VCC ± 1V Motor Control Mode: FOC Brake Mode: Positive (12V) / Negative Compatible Under Voltage Protection: 62-64V Over Voltage Protection: 91-93V Rated Power: 1440W Peak Power: 3600W Limited Value: 48-52A Operating Temperature: -20-60℃ Fitment: Fit for ≤2000W QS Motor Electric motorcycle mobility scooter. Package List: 1 x Electric Motorcycle Controller 1 x Wiring 5 x Screws Note: Professional installation is strongly recommended, we have an electronic manual.