[busterbrown]

I'm assuming you're referring to an RV TPMS. There are several good brands that will provide a good layer of monitoring for tire pressures and temps. I invested in a EEZTire TPMS 4 sensor kit by EEZ RV. I bought the non-flow through sensors and repeater as the combined length of my rig approaches 50 feet. After owning and using it for over a year, I'm very happy and satisfied. There are several others that are great performers too including the TST 507 and Tireminder systems. I'd be cautious with any sub $100 product as signal loss will render it useless.