Features1LCD Instrument Controller Adopts High Quality Aluminum ABS Materials: workmanship, ensuring good toughness and waterproof performance, providing better protection for the internal circuit, making it more durable. 2Dual 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. 3Brushless Motor Controller: Stable and silent, sensitive to the working state of the bicycle, and no noise. 4Easy To Install And Use: High performance, with LCD screen bracket, suitable for 22.5mm handlebars, very suitable for electric bicycles, scooters, ATVs, etc. 5LCD 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.SpecificationItem Type: Brushless Controller LCD DisplayMaterial: Aluminum Alloy + ABSController Box Size: Approx. 15 x 8.5 x 4.5cm/5.9 x 3.3 x 1.8inPower: 500WCurrent Limit: 28AIntroduction to working principle and status of dual drive controllerDual drive controller instrument kit uses same set of brake levers, turn handles, and reverse switches. LCD instrument is connected to main controller. Main and sub controllers are simultaneously connected to the dual drive signal exchange socket of main controller with the same battery power supply and other sub controllers. Dual drive signal interactive sockets of controller are connected to each other, and then the main controller and the sub controller are connected to their respective motors. After instrument is turned on, it will identify the phase of motor, forward and reverse direction of rotation and battery type through intelligent identification line. After identification line is turned on, entire system can operate normally. At the same time, two motors are controlled to run at the same speed and brake at the same time.Package List2 x Controllers1 x LCD Display1 x Manual