BA-200 Speed/Cadence Bike Sensor Description BA-200 is a speed / cadence bike sensor that can help you understand your instant speed / cadence information when riding your bike. BA-200 bicycle speed / cadence combo sensor utilizes 2.4 GHz wireless technology to transmit speed and cadence information to main device (smart phone or bike computer) by wireless method. You can pair your BA-200 with BLE 4.0 compatible smart phone having APP that can read speed / cadence information. Or, you can pair your BA-200 with BLE 4.0 compatible bike computer. When biking with BA-200, you will know your instant speed / cadence information showing in your main device. Then, you can analyze your training result by reviewing your training data recorded in your main device. Moreover, BA-200 is designed with IPX7 water resistant standard. So, you do not need to worry about the weather condition when biking with your BA-200. Therefore, BA-200 will be your best bike training partner and you will also have fun when riding your bicycle with BA-200.