Features1Good Heat Dissipation: The controller housing adopts groove design, which has good heat dissipation performance and can protect the inner circuit to avoid thermal overload. 2Waterproof: The panel is made of ABS material, light, sturdy and durable, with fine workmanship, good toughness and waterproof performance, providing better protection for the internal circuit and making it more durable. 3Main Application: For DIY electric bicycles, electric scooters, electric folding bikes, etc. Easy to maintain, bicycle lithium battery modification kit greatly improves the fun of riding, suitable for cyclists who like challenges. 4Stable: The controller has protection functions such as undervoltage protection, overcurrent protection, stall protection, etc., which ensures the use and safety of electric bicycles. 5Multi Functional: When you ride a bicycle, the panel will display many useful data on your bicycle, such as switch buttons, light switches, battery level display and other functions, a panel allows you to keep abreast of the situation. Suitable for 22.2mm handlebars and easy to install and use.SpecificationItem Type: Electric Bike Controller KitProduct Material: Aluminum Alloy, ABSWeight: Approx. 1340g / 47.3ozSingle Current Limit: 28ASingle Controller Power: 500WPanel Parameters:Suitable: For 22.2mm Diameter Handlebar Panel Display Function: Speed Display, Power Gear Display, Electric Quantity Indication, Fault Warning, Total Mileage, Single Mileage, HeadlightPackage List2 x Controller1 x Panel1 x Instruction Manual