This product is made of high quality ABS material, which is durable and not easy to wearHall sensor has the advantages of small size, light weight, shockproof, anti-corrosion, dustproof, etc. It is suitable for use in electric bicyclesPrecision machining, precision assembly, excellent qualityThis auxiliary sensor is suitable for pedal-assisted electric bicycle drive system, saving time and effortApplicable to almost all electric bicycles on the market, it is a good helper for electric bicycles Condition: Magnets: 12 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 fixedThere 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 reliableRight side installation: Step on the output pulse signal and reverse to not outputLeft side installation: output pulse signal, reverse step will not outputColour:black Material: ABS Size:Length: 100cm Package Contents: 1 x Bike Pedal Assist Sensor Only the above package content, other products are not includedNote: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.