Features1Adopt single-chip microcomputer as the controller main control chip to control and protect the motor and battery of the electric vehicle, and improve the reliability and service life of the product. 2With protection functions such as undervoltage protection, overcurrent protection, stall protection, etc., ensuring the use and safety of electric bike. 3Intelligent control, reliable protection of electric bicycle motor and battery. 4With long line thumb throttle grip, easy to operate. 5Wonderful accessory for electric bicycle.SpecificationItem Type: Electric Bike Accessory Model:YK-31CMaterial: aluminium alloyColor: As picture shownWeight: Approx. 345gRated voltage: 24VRated power: 500WThumb throttle grip: 1-4VPackage List1 x Controller1 xThumb throttle grip