Rain sensor / detection: Long discussions recently, big one here Rain Detection?
It has been raining here for about three days now as a result of a late season slow moving Nor’easter (some elevations got snow!), and the rain sensor is 75. If I cleaned the sensor thoroughly on a daily basis (not going to happen) and left water on it, it might get above the threshold of 1000, but it dries far sooner than the grass and gets dirty again quickly, and it’s back to registering low numbers even soaked. So I do not use the rain sensor but opt to use the Mowing Operation Initiation Slipper Test, mentioned in one of my responses there, which is an alternative using equipment you may already have in your own home.