Features136/48V 500W Brushless Motor Controller: Stable and silent, sensitive to the working state of the bicycle, and no noise. 2866 LCD Display: Can clearly display the status and data, the backlight allows you to see the screen clearly in a dim environment, the buttons are quick to operate, and it is easy to use. 3Easy to Install and Use: High performance, with LCD screen bracket, suitable for 22.5mm/0.9in handlebars, very suitable for electric bicycles, scooters, ATVs, etc. 4Dual Drive Controller: Connected to main and auxiliary motors, a set of control system controls two motors at the same time to achieve various functions, such as braking, reversing, speed regulation and various functions of instrument. 5LCD Instrument Controller: Adopt aluminum alloy and ABS materials, workmanship, ensuring good toughness and waterproof performance, providing better protection for the internal circuit, making it more durable.SpecificationItem Type: Dual Drive Electric Bike Controller Kit Color: As Picture ShownPower: 500WCurrent Limit: 28AWeight: Approx.1300g/45.9ozMaterial: Aluminum Alloy + ABSVoltage: 36V/48V UniversalController Box Size: Approx. 15x8.5x4.5cm/5.9x3.3x1.8inWorking 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 List2 x Controller1 x LCD Display1 x Manual