Feature:1. Sensitive Control: Brushless controller can provide stable speed and sensitive control of braking and direction change.2. 48V: The brushless motor controller has a voltage of 48V and 21A current for stable and reliable performance.3. Multi Protection: Brushless controller has under voltage protection, over current protection, stall protection and other protection functions to ensure the use and safety of electric bike.4. Scope of Application: DC brushless motor controller is well made and suitable for electric bike, electric scooter, etc.5. Aluminum Alloy: The controller housing is made of aluminum alloy with recess to defend the internal circuit from thermal overload due to good heat dissipation.Specification:Item Type: 48V Brushless Motor ControllerMaterial: Aluminum AlloyVoltage: 48VCurrent: 21A.Package List:1 x48V Brushless Motor Controller