Feature 1Bike Lithium Electric Retrofit Controller Kit: Contains 17A three mode controller, UKC1 panel, controller Pack. Suitable for DIY modification, to meet many needs. 2Protection of Internal Circuitry: The controller enclosure is made of high grade metal with grooves designed to protect the internal circuitry from thermal overload due to nice heat dissipation. Panel mounting diameter 22.2mm, suitable for electric bicycles, electric scooters and other perfect accessories. 3Excellent Grade Material: The panel adopts excellent grade ABS material, light, strong and durable, fine workmanship, toughness and waterproof performance, so that it is more durable. 4Panel Built in Intelligent Chip: Integrated gear switching, real time cycling data at a glance, intimate backlight design, day and night can be seen clearly, making travel more convenient, high definition LCD display panel, accurately display speed and cycling mileage. 5Panel Has a Variety of Functions: When riding a bike, the product will display many useful data on your bike, such as switch buttons, light switch, battery level display and other functions, a display can keep you abreast of the situation. 6Main Uses: Suitable for 350W motor; DIY electric bicycle, electric scooter, folding bike, etc. Easy to maintain, the bike lithium electric modification greatly improves the fun of riding, suitable for cyclists who like a challenge.Item Type:ElectricBikeConversionKitWeight: 711g/25.1ozMaterial: ABS, rubber, aluminum alloy, metalController Size: 95 x 50 x 30mm/3.7 x 2 x 1.2inCurrent: 171ARated Voltage of Controller: DC 24V 36V 48VController Speed Setting: 1.1-4.2VApplicable Motor Power: 350W .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 xPanel1 x Controller4 x Washer3 x Screw3 x Nut1 x Instruction Manual1 xController Bag