1??Good Heat Dissipation: The controller shell is made of high quality metal with grooves designed to protect the internal circuitry from thermal overload due to good heat dissipation. 2??Scope of Application: The 36V 48V 500W brushless motor controller is easy to install and use, comes with an LCD display and speed control throttle grip, and fits 25mm handlebars. 3??LCD Display Funtion: The LCD display can clearly display the status and data, the backlight allows you to see the screen clearly in the dim environment. Buttons for quick operation. 4??Sensitive Braking Control: The 36V 48V 500W brushless motor controller provides stable speed and sensitive control of braking and directional changes. 5??Voltage Power and Current: Controller box size is about 15x8.5x5cm / 9x3x8in. 36V 48V voltage, 500W power, 28A current limit, 30V 42V low voltage.