Feature:1. Using excellent singlechip as main control chip, control and protect motor and battery of electric bike, improved reliability and service life.2. With undervoltage protection, overcurrent protection, stall protection and other protection functions, ensures the use and safety of electric bicycles.3. Suitable for electric bicycle, electric tricycle, electric scooter.4. Made of high quality aluminum and plastic material, sturdy, durable and long service life.5. Professional manufacturing, stable characteristics and high reliability.Specification:Condition: 100% Brand NewItem Type: Controller Throttle Grip KitMaterial: Aluminium + PlasticColor: As Pictures ShownRated Power: 500WUndervoltage31.50.5VShifter Handle1-4VWeight: Approx. 391gController Box Size: Approx. 8.3x6.6x3.8cm/3.27x2.60x1.50inch.Package List:1 x Controller 1 x Pair of Throttle Grip