Features1INTELLIGENT RECOGNITION: With strong functionality, intelligent identification of two pole power supply voltage adapts to general use. 2HEAT DISSIPATION PERFORMANCE: The appearance is exquisite, the shell has evenly distributed thickened heat dissipation groove, which has strong heat dissipation function and avoids thermal overload. 3HIGH EFFICIENCY AND ENERGY SAVING: The wire and interface are durable, ensuring low failure rate in long term use, more efficient and more energy saving. 4MAIN FUNCTION: This product is a brushless motor controller, which can provide stable speed and sensitive braking and direction change control. 5WIDE APPLICATION: The brushless controller is a great accessory for electric bicycles, scooters, etc., bringing you a more comfortable riding experience.SpecificationItem Type: Motor Brushless Controller Material: Aluminum AlloyProduct Color: As Pictures Shown Controller Box Size: 15x8.5x4.5cm / 5.9x3.3x1.8inProduct Weight: Approx. 573g / 20.2ozVoltage: 48VPower: 500WCurrent Limit: 28APackage List1 x Controller1 x Manual