Description The cadence sensor on an electric bicycle measures how fast the rider is pedaling. It helps the motor controller determine the level of assistance to provide, optimizing efficiency, conserving battery, and delivering a smooth riding experience. Features The Dual Hall sensor is designed for easy assembly on the left side of electric bicycles, primarily for detecting power-assist signals. It features 12 magnets, providing improved accuracy and extended detection range compared to a standard 6-magnet sensor. Compatibility: Select by Velowave ebike model.