1、Muitiple Use: Intelligent electric bicycle shift sensor, in the shift of the motor power supply temporarily interrupted, to prevent the gear crunch and avoid the chain ring and cassette rupture. 2、Long Working: Protecting engine life, the gear sensor is an excellent device for truly improving gearshift, thus extending transmission life and maintaining a higher average speed. 3、Strong Compatiblity: The gear shift sensor is suitable for 3pin interface, lithium bicycle modified electric bicycle accessories and for BAFANG mid motor. 4、Stable Replacement: It can help rider to avoid some problems like chain or derailleur damaged also can bring some smooth and safe shifting feeling to rider. 5、Easy to Use: Convenient to connect to your divise, so it doesn't take a lot of time to install and disassemble. And reduces your annoyance and solves your problems quickly. Item Type: Gear Sensor Product Material: ABS plastic,  rubber and aluminum alloy Weight: Approx. 32g / 1.13oz Wire length: Approx. 48.5cm / 19.09in(Not Including Connector)Application: For 3pin interface, lithium bicycle modified electric bicycle accessories and for BAFANG mid motor. 1 x Gear Sensor 1 x Wire End Connector