Features 1、Main Applications: The 17A 3 model controller kit is suitable for 250W 350W motors. Suitable for DIY electric bicycle, electric bike, electric vehicle , electric scooter, folding bicycle, etc. The lithium battery modification of bicycles greatly enhances cycling pleasure, making it suitable for cyclists who enjoy challenges. 2、36V 48V Controller: The controller shell is made of metal with groove design, which can protect internal circuits and avoid thermal overload due to its excellent heat dissipation function. 3、SW900 LCD Display: The SW900 LCD display adopts ABS material, which is lightweight, sturdy, and durable, with fine workmanship, good toughness and waterproof performance, providing better protection for internal circuits, making it more durable. 4、Multiple Functions Display: When riding a bike, this SW900 LCD display will display many useful data on your bike, such as switch buttons, light switches, battery level display, and other functions. A display screen can keep you informed of the situation at all times. 5、SW900 Display Installation Diameter: The SW900 LCD display installation diameter is 22.2mm, which is a perfect accessory for electric bicycles, electric scooters, etc. 6、Package List: The electric bike motor controller kit includes 17A 3 mode controller and SW900 LCD display. It is suitable for DIY modification and meeting all needs. Item Type: Electric Bike Motor Controller Kit Material: ABS, Rubber, Aluminum Alloy, Metal Weight: Approx. 500g / 17.6oz Maximum Current: 17 ± 1A Controller Speed Setting: 1.1-4.2V Braking: Input Low Level Applicable Motor: Suitable For 250W 350W Motors Controller Size: Approx. 80 x 50 x 30mm / 3.1 x 2.0 x 1.2in Package List 1 x Controller 1 x Display 2 x Manual