What is Electric Bicycle? A bicycle with an electric motor that helps to move the bicycle forward even when the rider is not turning the pedals, also often used to refer to any bicycle with an electric motor, including those where you must turn the pedals. The Electric Bicycle's battery is good for miles after which you can still pedal. If you have already own a bicycle, you can convert it into an electric bicycle to make your journey easier. Description 100% brand new and high quality [Speed Sensor] The speed sensor suitable for Bafang mid motor provides accurate data support for the entire system. Magnet speed sensor, high sensitivity and long life. [COMPATIBILITY] The speed sensor is compatible with all BAFANG mid drive motor , including 1000W 750W 500W 350W 250W 8fun electric bike converion kit [FUNCTION] The speed sensor can help you see the real-time speed on the display . It provides precise support for the whole system , in this way , to improve the debuggability of the drive system for different users [SPECIFICATION] Pulse number ( pulse / cycle ) 1 ; Rated input voltage ( DCV ) 4.2-5.5 ; Operating Temperature : -20-45℃ [SIZE] Wiring Type : M3.10 ; Sensing Distance : 2-5mm Product name: Speed sensor Number of pulses (pulse/cycle): 2 Plus Rated input voltage (DCV): 4.2-5.5 Operating temperature: -20-45°C Installation location: frame Induction distance: 2-5mm Waterproof grade: IP65 Note: 1. As we all know ,the different computers display colors differently,the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size ,you can feel free to contact mewe will give you some suggestion,but it is for you reference only. 3.We could accept Mixed items,Colors And Sizes Order. The more quantities, the more Package Included: 1 set Speed Sensor