Humidity Controller Sensor Probe for WH1436HUM-PRO, 9.8 Feet Long, Enhanced Version

I ordered 3 WILHI humidity controllers. Each came with a spare sensor. That was nice but it was also a bad omen. After a year, I had to replace all of the original sensors with the spares. Now two of the spare sensors have failed. The controller is a nice device but the sensors become unreliable and fail. I'll try another brand of controller next time to see if there is one with a more reliable, longer-life sensor. :(

Works fine, only works on newer "pro" model

I unpacked the 2 items for each of my WILLHI model WH1436H humidity control devices and gave them 24 hours to sit in the rooms the devices were used in. Both of sensors read 58 to 60 percent humidity. The actual humidity in the rooms runs between 41 and 45 percent. The room humidity is also monitored by three other sensor devices that read between 41 and 45%.