Feature 1This product is made of high quality ABS material, which is durable and not easy to wear 2Hall sensor has the advantages of small size, light weight, shockproof, anti-corrosion, dustproof, etc. It is suitable for use in electric bicycles 3Precision machining, precision assembly, excellent quality 4This auxiliary sensor is suitable for pedal-assisted electric bicycle drive system, saving time and effort 5Applicable to almost all electric bicycles on the market, it is a good helper for electric bicycles Features: This product is made of high quality ABS material, which is durable and not easy to wear. Hall sensor has the advantages of small size, light weight, shockproof, anti-corrosion, dustproof, etc. It is suitable for use in electric bicycles. Precision machining, precision assembly, excellent quality. This auxiliary sensor is suitable for pedal-assisted electric bicycle drive system, saving time and effort. Applicable to almost all electric bicycles on the market, it is a good helper for electric bicycles. Specifications: Condition: 100% 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 * Bike Pedal Assist Sensor