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.