Features： 1、Enhanced Motor Control: Provide a significant boost in your motor's speed and power, providing optimal performance that matches well with for QS Hub and for QS Mid drive motors. 2、Stable Sine Wave Management: The sine wave controller could provide high stability without unnecessary fluctuations, creating a perfectly harmonious effect for a seamless power transition. 3、Battery Protection and Enhanced Lifespan: Not only does it protect and extend the life of your battery, also boosts the driving distance, making your rides longer without frequent charging. 4、Self Learning: With its self learning capacity and professional craftsmanship, this controller has a high reliability and unique design. Showcasing excellent commonality, it amplifies your riding experience. 5、High Durability: Crafted from premium material, this sine wave controller can withstand high temperatures and corrosion, ensuring stability and longevity under continuous usage. Specification： Item Type: Brushless DC Controller Material: ABS Model: ND72200 Voltage: 72V Phase Current: 200A Bus Current: 55A Number of Tubes: 12 Waterproof Rating: IP67 Sensor Type: Hall Sensor Applicable Motor Power: Equal to or less than 1500W (this value is a normal matching value, if you do not pursue torsion and top speed, you can float up a power range) Fitment: Fits for Electric Motorcycle Electric Scooter Brushless DC Driver Package List： 1 x Brushless?DC?Controller 1 x Wiring Cable 7 x Screw