After spending literally years thinking about which system to buy, I settled on
https://eezrvproducts.com/eezrv-tpms-info and have been satisfied I made the right decision. If you go to Quartzsite, you can meet Donald Chin the owner of EEZ RV Products.
They come with the tamper-proof sensor that require a wrench to fasten and remove the sensors. The tamper proof cap can be removed for easier access to the valve stems when adjusting pressure is required and I took all mine off. I haven't lost a one since but it's a lot easier adjusting the pressures now.
The batteries are easily replaceable (2016 button batteries which should last 2 years). One thing to remember is most of these system operate at 433Mhz which is often used by indoor/outdoor thermometers and cause problems.
When contact is lost with a sensor, the receiver beeps to alert you. The receiver can handle 20 different sensors. They come either flow-through or anti-theft valve cap type.