Feature: 1. Applicable Models: This motor controller set is suitable for 250W, 350W motors, please confirm the motor model before use. 2. Heat Dissipation Function: The controller housing is made of premium metal with notch design, which can preserve the internal circuit due to the good heat dissipation function, thus avoiding thermal overload. 3. LCD Display: The LCD display can clearly display the status and data, and the backlight can also allow you to clearly see the screen in a dim environment. The buttons are quick to operate and easy to use. 4. Easy to Install: This electric bike brushless motor controller is easy to install and use, comes with an LCD display bracket, and fits 22.2mm handlebars. 5. Main Uses: This brushless controller kit is suitable for DIY electric bikes, electric vehicles, electric scooters, folding cars, etc, widely used. Specification: Item Type: Motor Controller Kit Shell Material: ABS, Aluminum Alloy Gross Weight: 373g / 13.2oz Controller Size: Approx.9.5 x 5.2 x 3cm / 3.7 x 2.0 x 1.2in Voltage: 36V 48V Universal. Package List: 1 x Controller1 x Display1 x Manual