Features1Main Applications: The 17A 3 model controller kit is suitable for 250W 350W motors. It is suitable for DIY electric bicycle, electric bike, electric vehicle, electric scooter, folding bicycle, etc. The bicycle lithium battery modification kit greatly enhances cycling pleasure, making it suitable for cyclists who enjoy challenges. 2Bicycle Lithium Battery Modification Kit: The bicycle lithium battery modification controller kit includes 17A 3 mode controller, EN05 dispaly, FT 8C magnetic point, 109R thumb throttle. It is suitable for DIY modification and meeting all needs. 336V 48V Controller: The controller shell is made of metal with groove design, which can protect internal circuits and avoid thermal overload due to its heat dissipation function. 4EN05 Display: The EN05 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. 5Multiple Functions Display: When riding a bike, this EN05 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. 6EN05 Display Installation Diameter: The EN05 display installation diameter is 22.2mm, which is a accessory for electric bicycles, electric scooters, etc. 7Three Modes: Mode 1 is positive, mode 2 has Hall mode, mode 3 has no Hall mode. When the motor Hall is normal, the positive and negative wave operates, and when the Hall is damaged, it switches to the no Hall square wave mode for operation.SpecificationItem Type:ElectricBikeControllerKitMaterial: ABS, Rubber, Aluminum Alloy, MetalWeight: Approx. 508g / 17.9ozMaximum Current: 17 1AController Voltage: DC 36V 48VController Speed Setting: 1.1-4.2VBraking: Input Low LevelApplication: Suitable For 250W 350W MotorsController Size: Approx. 80 x 50 x 30mm / 3.1 x 2.0 x 1.2inPackage List1 x Controller1 x Display1 x Boost Magnetic Disc1 x Booster Line1 x Thumb Throttle2 x Manual