I put a TST system on my Class A. It was a very finicky system. The sensors screwed onto the valve stem of each tire and the fronts stuck out enough that they could be knocked off if you brushed a curb. I did brush a curb with my system and the sensor got knocked off and the tire began to deflate. In a most ironic fashion, the monitor never set off an alarm! You would thing that a sensor disconnect would at least tell you that it lost contact between the monitor and the sensor. TST told me that a "lost signal" will just continue to display the "last known value". I literally was parked on the side of the road with a completely flat tire and the monitor still said that the tire had 75 psi.
The sensors were a "flow through" design, meaning that you could fill the tire up with the sensor on the valve stem. Unfortunately, the sensors dramatically decreased the volume of air that you could put in the tire. Adding a few PSI could take several minutes.
Each time you started up the system it could take up to ten minutes for the monitor to read all of the tires and display their pressure and temperature.
I think there are better solutions out there than the TST brand.
