Have a Tire minder system. Not happy with it. Read a couple reviews on the EZEE Tire system. The feedback for EZEE Tire was mostly favorable.
My issue with Tire Minder was the variation in pressure readings. I aired up the tires to within +- 1 psi. Attached the sensors and synced the sensors to the monitor. The monitor readout had some tires as much as 10 psi higher than the manual pressure gauge reading. Time from beginning of installation to testing was less than 30 minutes vehicles ever moved.