Features： 1、Connect the main and auxiliary motors, one control system controls two motors at the same time to achieve various functions, such as braking, reversing, speed control and various functions of the instrument. 2、The use of high quality aluminum and ABS materials, workmanship, to ensure good toughness and waterproof performance, provide better protection for the internal circuit, making it more durable. 3、Adopt brushless motor controller, stable and mute, and is sensitive to the working state of the electric bicycle. Professional manufacturing, stable characteristics and high reliability. 4、The LCD screen clearly displays status and data, convenient and practical and the LCD backlight display can clearly show the state and data even in a darker environment. 5、Easy to install and use, high performance. Small size and lightweight, easy to carry and store, convenient to use. Very suitable for electric bicycles, scooters, etc. Specification： Item Type: Electric Bike Instrument Controller Set Material: Aluminum Alloy+ABS Controller Box Size: Approx. 17.6x5.2x3cm / 7x2x1.2in Power: 350W Current Limit: 13A Package List： 1 x Controller 1 x Instrument  1 x Manual