Features136/48V 500W Brushless Motor Controller: Stable and silent, sensitive to the working state of the bicycle, and no noise. 2Easy to Install and Use: High performance, suitable for 22.5mm/0.9in handlebars, very suitable for electric bicycles, scooters, ATVs, etc. 3886 Half Handle 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. 4 Workmanship: Use aluminum and ABS materials to ensure good toughness and waterproof performance, provide better protection for the internal circuit, and more durable. 5Dual 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.SpecificationItem Type: Dual Drive Electric Bike Controller Kit Color: As Picture ShownPower: 500WCurrent Limit: 28AWeight: Approx.1502g/53.0ozMaterial: 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 Display2 x Grip1 x Manual