Works Great!! I bought this to attach to the petal arm of my Sunny Health Stationary Bike so I can follow along with my cycle workouts via Peloton App. This sensor works great and seems accurate. I was able to follow the suggested rpm during my workout - no problem. Very happy with this purchase! If you are looking for a sensor for your stationary bike, get this one! It attaches to the petal arm with a sticky 3M piece or you can attach with zip ties. I used the sticky 3M and it held great throughout my workout.