Features: 1.Function: The brushless speed motor controller will help you electric vehicle to start more smoothly, ensure more comfortable riding, better ensure your driving safety. 2.Rated Voltage and Power: The rated voltage of the speed motor controller is DC36?48V, the rated power is 500W and with IP55 waterproof grade, safe and dependable to use. 3.Aluminum Alloy Housing: The motor controller housing is made of aluminum alloy with groove design to protect the internal circuit, facilitate heat dissipation and avoid thermal overload. 4.Exquisite Workmanship: Professional manufacturing, high performance, the wires and interfaces of the notor control box are durable, and ensure low malfunction of long time use. 5.Application: Suitable for wind turbine scooters, mechanical equipment, electric motorcycle DIY engine kits, push scooter, go karts, electric bicycles and many more other machines. Specification: Item Type: Brushless Motor Controller_x000D_ Material: Aluminum Alloy_x000D_ Mounting Hole Size: M6_x000D_ Controller Rated Voltage: DC36-48V_x000D_ Controller Rated Power: 500W_x000D_ Phase Angle: 60/120 Universal_x000D_ Waterproof Grade: IP55_x000D_ Under Voltage Protection: 42V1v_x000D_ Output Current: 22A1A_x000D_ Cooling Method: Natural Cooling_x000D_ Application: Suitable for wind turbine scooters, small electric scooters, mechanical equipment, mini electric motorcycle DIY engine kits, push scooter, go karts, electric bicycles, Electric tricycles, DIY engine systems, and even Lawn mowers and more machinery and more PackageList: 1 x_x000D_ _x000D_ Brushless Motor Controller