1、Kit Contents: Bicycle lithium conversion controller small kit contains 17A sine wave controller, LCD3U display, thumb throttle, power assist sensor. Suitable for your own DIY modification to meet all the needs. 2、Controller: The controller shell is made of prime metal with a grooved design that protects the internal circuitry from thermal overload due to good heat dissipation. 3、Display: The display uses ABS material, which is lightweight, strong and durable, with fine workmanship, good toughness and waterproof performance, providing better protection for the internal circuitry and making it more durable. Display mounting caliber 22.2mm. 4、Intelligent Chip: Display built in intelligent chip, integrated gear switching, real time cycling data at a glance, thoughtful backlight design, day and night can see clearly, make traveling more convenient, HD LCD display, accurate power display speed and cycling mileage. 5、Multi Functional Display: The display has many functions; while riding a bike, the product will display many useful data on your bike, such as on off buttons, light switches, battery level display, and other functions, a display can keep you in control of the situation at all times. 6、Main Use: 17A sine wave controller kit for 350W motor, DIY electric bicycle, electric scooter, folding car, etc.; easy to maintain, lithium bicycle modification greatly improves the fun of riding, suitable for cyclists who like challenges. Item Type: Electric Bicycle Lithium Battery Conversion Kit Weight: 727g / 25.64oz Material: ABS, Rubber, Aluminum Alloy, Metal Applicable: Applicable to 350W motor, matches communication protocols for KT products (commonly known as No.1 communication protocol) Controller Size: 9.5x6x3cm Maximum Current: 17±1A Controller Rated Current: 8A Controller Speed Setting: 1-4.2V 1 x Controller 1 x Display 1 x Bracket 4 x Gasket 2 x Screw 1 x Thumb Throttle 1 x Power Assist Cable 1 x Power Assist Sensor 2 x Instruction Manual