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Sine Wave Controller 60V-72V Big Power E-Bike Brushless Motor Sensor 3000 Watt Description All Screws Are Fixed With Waterproof Thermal Conductive Glue, Which Has Better Waterproof And Heat Dissipation High-Power Controllers Use High-Quality Accessories To Improve Work Efficiency. Powerful Start, Climbing Power Large And Small Motor Noise. When The Battery Voltage Become Lower, The Current Will Also Become Lower To Keep Normal Running. It Only Protect The Battery And Extend The Battery Life, But Also Increase The Running Distance. When The Motor Phase Is Failure, Controller Will Protect It, Avoid Motor Burned, And Protect The Battery At The Same Time. Specification Name: Sine Wave Controller Rated Power: 3000W Working Voltage: 60V-72 V Colour:Black.