@rbeck, what you are seeing is normal, though poorly phrased. Often the rain sensors incorporate a freeze protection switch as well. Basically they are activated by Rain or Low temperature to achieve the same thing (prevent irrigation). Because the signal looks identical to Rachio, user interface calls it a Rain sensor (because this is what it usually is), but more accurately UI should call it “rain or freeze sensor is activated”. No matter what, you are protected even if the message has caused some confusion.