Features1Good Heat Dissipation: The controller housing is made of high quality aluminum alloy with a grooved design, which protects the internal circuits from thermal overload due to good heat dissipation. 2Intelligent Dual Mode: Intelligently identify the state of the motor Hall. Switch the working mode, if the Hall is normal, there will be Hall operation, and if it is damaged, it will switch to no Hall operation. 3Scope of Application: The 36V/48V 500W brushless motor controller is a good accessory for electric bicycles, scooters, etc., bringing you a more comfortable riding experience. 4Long Lasting Uses: The cables and interfaces of brushless speed motor controller are durable, ensuring a low failure rate for long term use. More efficient and energy efficient. 5Controller Box Parameter: 36/48V voltage, 500W power, 28A current limit, 30/42V low voltage. Controller box size is about 15x8.5x4.5cm / 5.9x3.3x1.8in.SpecificationItem Type: 36V/48V 500WElectricScooter Bike BrushlessMotor ControllerMaterial: Aluminum AlloyVoltage:36V/48VPower: 500WCurrent Limit: 28ALow Voltage: 30/42VColor: As Pictures ShownWeight: Approx. 640g / 22.6ozController Box Size: Approx. 15x8.5x4.5cm / 5.9x3.3x1.8inPackage List1 x Controller1 x Manual