Features1Sensitive Control: Brushless controller can provide stable speed and sensitive control of braking and direction change. 248V: The brushless motor controller has a voltage of 48V and 21A current for stable and reliable performance. 3Multi 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. 4Scope of Application: DC brushless motor controller is well made and suitable for electric bike, electric scooter, etc. 5Aluminum Alloy: The controller housing is made of aluminum alloy with recess to defend the internal circuit from thermal overload due to good heat dissipation.SpecificationItem Type:48VBrushlessMotorControllerMaterial: Aluminum AlloyVoltage: 48VCurrent: 21APackage List1 x48VBrushlessMotorController