Parameter: The available battery voltage is 63V-72V, maximum DC current is 55A, boost DC current is 60A, peak phase current is 190A, and maximum power is 3960W. Speed Control: The controller can obviously improve the speed and power of the motor, ensure high speed motor operation, applicable for hub and medium drive motor. High Performance: Sine type controller has stable effect, not easy to fluctuate, high efficiency, IP67 waterproof, 170% flux weaking ratio, and CE, CCC certified. Design: Designed with 12 FET mosfets detail, hall sensor working communication, and support programmable by PC, applicable for electric motorcycle and bike. Fine Workmanship: Professional manufactured, exquisite workmanship with unique design, ensure stable performance and high reliability. Item Type: Sine Controller Material: ABS Available Battery Voltage: 63V-72V Maximum DC Current: 55A Boost DC Current: 60A Peak Phase Current: 190A Maximum Power: 3960W Mosfets Detail: 12 FET Matched Motor Rated Power: 800W-2000W Maximum Efficiency: 92% Degree of Waterproof: IP67 Flux Weaking Ratio: 170% Certification: CE, CCC Working Communication: Hall Sensor Support Programmable by PC Applicable Motor Type: Hub motor, medium drive motor Applicable Models: Electric motorcycles, electric bicycles Size: Approx. 20106.5cm/7.93.92.6in. 3 x Cable Harness. 5 x Bigger Screw. 4 x Smaller Screw. We will reply your message within 48 hours. If you do not receive our reply within 48 hours, pls. Post a message again because sometimes our message system may block some emails. If you are satisfied with our service, pls. Our aim is to provide Level Customer Service, your recognition will encourage us greatly and serve you better. We strive to keep all our customers satisfy. We will do our up most to exceed your expectations in customer service, communication and dispatching of your orders.