Feature: 1. With 930 Color LCD Screen Display Bracket: Suitable for 22.5mm/0.9in handlebars, very suitable for electric bicycles, scooters, etc. 2. Excellent Workmanship: Use aluminum and ABS materials to ensure good toughness and waterproof performance, provide better protection for the internal circuit, and more durable. 3. Easy to Install: High performance, brushless motor controller, stable and quiet, and sensitive to the working state of the bicycle. 4. 36/48V 500W Dual Drive Controller: Connect the main and auxiliary motors, a set of control system controls two motors at the same time to realize various functions, such as braking, reverse speed regulation and various functions of the instrument. 5. Easy 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. Specification: Item Type: Dual Drive Electric Bike Controller Kit Color: As Picture Shown Power: 500W Current Limit: 28A Weight: Approx.1300g/45.9oz Material: Aluminum Alloy + ABS Voltage: 36V/48V Universal Controller Box Size: Approx. 15x8.5x4.2cm/5.9x3.3x1.7in Working Principle and Status of Dual Drive Controller: Dual Drive Controller Instrument Kit Uses the Same Set of Brake Levers, Turning Handles, and Reverse Switches. 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 and Other Auxiliary the Dual Drive Signal Interactive Socket of the Controller is Docked and Plugged, and then the Main Controller and the Sub Controller Are Connected to Their Respective Motors. After the Identification Line is Opened, the Entire System Can Operate Normally, and at the Same Time, It Controls the Two Motors to Run at the Same Speed and Brake and Reverse at the Same Time.. Package List: 2 x Controller1 x LCD Display1 x Manual