1Easy to Install: With round color screen LH100 LCD display bracket, suitable for 22.5mm/0.9in handlebars, very suitable for electric bicycles, scooters, etc. 2High Performance: Brushless motor controller, stable and quiet, and sensitive to the working state of the bicycle. 3Excellent Workmanship: Use aluminum and ABS materials to ensure good toughness and waterproof performance, provide better protection for the internal circuit, and more durable. 4Easy to Use: LCD display can clearly display status and data, the backlight allows you to see the screen clearly in a dim environment, and the buttons can be operated quickly. 5Working Principle: LCD instrument is connected to the main controller, and the main and auxiliary controllers are connected to the same battery power supply at the same time. Dual drive signal exchange socket of the main controller Connect to the dual drive signal interactive sockets of other sub controllers, and then connect the main controller and the sub controller to their respective motors. Item Type: Dual Drive Electric Bike Controller KitColor: As Picture ShownPower: 450WCurrent Limit: 23AWeight: Approx.1164g/41.1ozMaterial: Aluminum Alloy + ABSVoltage: 36V/48V UniversalController Box Size: Approx. 11.5x8.5x4.5cm/4.5x3.3x1.8in 2 x Controller1 x LCD Display1 x Manual