We really like our Tireminders. We would not want to roll out without them.
Though for some reason position 1 seems to need to be pulled, battery removed and reinserted and then reinstalled at initial start up. It always drops 1# of pressure when taken off and reinstalled, after all my hard work to get them all equal and I see that the entire trip.
I remove and store them in a multi-compartment pill box when not in use with batteries removed.