Features: This product is made of high quality ABS material, which is and not easy to wear. Hall sensor has the advantages of small size, light weight, shockproof, anti, dustproof, etc. It is suitable for use in electric ycles. hining, assembly, excellent quality. This auxiliary sensor is suitable for pedalassisted electric ycle drive system, saving time and effort. Applicable to almost all electric ycles on the market, it is a good helper for electric ycles. Specifications: Condition: Brand New Material: ABS Magnets: 12 Line length: approx. 1m / 3.3ft Line color definition: 1. Red 5V 2. Green power signal 3. Black GND Installation and use: The middle shaft card slot rotates following the middle shaft, and the outer casing sensor is fixed. There is no need to disassemble the middle shaft, as long as the inner ring is caught in the middle shaft and the outer casing is fixed to the frame, it is convenient to install, stable and reliable. Right side installation: Step on the output pulse signal and reverse the step to not output. Left side installation: step forward output pulse signal, reverse step will not output. Package list: 1 * Pedal Assist Sensor