Our coach came to us with the Pressure Pro system for 12 tires. It interfaces with our Silverleaf display on the dash and rotates the individual 12 tires' pressures one at a time in series with an easily readable display. Programming, while easy, is time-consuming because all of the tire screw-on sensors have to be removed except the one you're trying to program/interface into the system. The sensors transmit tire pressures when installed on the tires' valves, thus when we plan to be parked for a few days or longer, I remove the sensors from the tires to preserve the sensors' battery lives. When a sensor's battery gets low, a new sensor must be installed and programmed into the system.
After the trade-in, I believe the sensors' cost was about $30 each. That's correct - the sensors do NOT have replaceable batteries! I do keep a few extra sensors on hand. I store the sensors in a one-dozen egg carton, labeled so that I get the correct sensor on the correct tire each time I remove and replace the sensors.
IF, IF, IF Pressure Pro would redesign their sensors so that we could change the batteries, then I would easily and quickly recommend the Pressure Pro system. However, given the fact that new sensors have to be purchased from time to time, depending upon the amount of use, I will not make that recommendation. Good luck with your choice.