1、The shell of the controller is made of high‑quality aluminum alloy with groove design, durable. 2、It has fine heat dissipation function, which protects the internal circuit and avoids thermal overload. 3、The brushless motor controller provides stable speed and sensitive control of braking as well as direction changes. 4、The brushless motor controller for electric scooters is simple to install and use. 5、The LCD display handle is suitable for 22.5mm/0.9in handlebars, and it can show the power and state of the scooter. Item Type: Controller and Handlebar Set for Electric Scooter Material: Aluminum Alloy Handlebar Wire Length: Approx. 180cm/5.9ft Controller Box Size: Approx. 15x8.5x4.5cm/5.9x3.3x1.8in Power: 500W Current-limiting: 28A Voltage: 36V/48V Meanings of the Color of Handlebar Wire: 1. Red: Power Input 2. Yellow: Gate Output 3. Blue: Signal Transmission 4. Green: Signal Receive 5. Black: Cathode Handlebar Weight: Approx. 950g/2.1lb 1 x Controller 1 x Handlebar 1 x Half Twist Throttle 1 x Meter 1 x Handlebar Buckle 1 x Instruction