Purchased these sensor for a Robohand Rotary Actuator. One of the sensors stopped working after about three days. Sensors are connected correctly. No stress on cable or extra bending that we know of.

Yes, Robohand makes excellent products. We have used a lot of there grippers. But if you buy the switches for any of their products, you are wasting your time. I don't know who manufactures them for Robohand but they are very fragile