Specification: Item type: Electric Bicycle Assist Sensor Material: plastic Color: As picture shown Cable length: Approx. 1.1m/3.6ft Weight: Approx. 33g Line color definition of 12 magnetic double for Hall integrated power sensor: 1. Green pulse signal 2. Red+5V 3. Black GND Package List: 1 x Electric Bicycle Assist Sensor This electric bicycle assist sensor made of high quality plastic materials, it's strong, stable, durable. Suitable for all electric bikes. Fine workmanship, provide good usage experience. The integrated assist sensor is installed on the right side of the bottom bracket by default, with a 12-pulse high-low signal ratio of 6:4. The chip screens and recognizes the pulse signal to determine the direction of rotation. The forward direction is valid, and the reverse direction is invalid. The e-bike assist sensor is easy to install and remove, it's practical and suitable for all electric bikes. Professional manufacturing, stable performance and high reliability.