Features1Main Applications: DIY electric bicycle, electric scooter, folding bike, etc. It is easy to maintain. The lithium battery modification of bicycles greatly improves the fun of riding, and is suitable for cyclists who like challenges. 2Controller Shell: The controller shell is made of metal with grooved design. Due to its good heat dissipation function, it can protect the internal circuit to avoid thermal overload. 3LED 900S Display: The LED 900S display is made of ABS material, which is light, durable, and has fine workmanship, good toughness and waterproof performance, providing better protection for the internal circuit. 4Good Performance: Rated voltage of controller is DC 36V 48V, rated current of controller is 15A, controller speed setting is 14.2V, maximum current is 30 2A, controller brake input is low level, low voltage protection is DC 30/40 0.5A. 5Package List: 1 x controller, 1 x display, 1 x display manual, 1 x thumb throttle, 1 x power assist sensor, 1 x front lamp, 1 x front lamp line, 1 x tail lamp, 1 x tail lamp line, 1 x manual.SpecificationItem Type:ElectricBikeControllerKitMaterial: Aluminum Alloy, ABS PlasticRated Voltage of Controller: DC 36V 48VRated Current of Controller: 15AController Speed Setting: 1-4.2VMaximum Current: 30 2AController Brake Input: Low LevelLow Voltage Protection: DC30/40 0.5AColor: As Pictures ShownWeight: Approx. 1070g / 2.4lbPackage List1 x Controller1 x Display1 x Display Manual1 x Thumb Throttle1 x Power Assist Sensor1 x Front Lamp1 x Front Lamp Line1 x Tail Lamp1 x Tail Lamp Line1 x Manual