1. For YQ V12, the merit is more thiner than the old KT-V12 2. Use the integration structure design of dual hall detection elements and the built-in disk, and it is unique, novel with beautiful appearance; built-in disk, and it is unique, novel with beautiful appearance; 3. Compared with the traditional separation sensor, it can realize the concentric motion of disk and magnetic induction element, which is with high sensitivity and stable signal; 4. Output 12 signals with fast power-assist response speed, and it can automatically identify the positive rotation and the reverse rotation of the pedal 5.Adaptable controller for KT-V12:Kunteng/Lishui/Jiannuo controller. Adaptable controller for YQ-V12:Kunteng controller.