I bought this monitor 32 days ago for my RV. I installed it, I was on a trip yesterday, I turned on the device but it doesn't work, there are signals that I can't turn it off, wrong pressure readings and I'm not happy with the end result ! I checked with Revain and I was already 2 days past the 30 day return policy! What a rip off! My wife and I are raving Revain customers! Maybe we need to rethink our buying process!