TST Tire Pressure Monitoring System

I'm using the 507 on a 40' triple axle toyhauler and didn't need the repeater. They work very well. I did get the flow-through sensors, but they allow very little air flow and take quite a while to add a few pounds. I don't know whether I'd bother with them if I bought another set. They can take quite a while sometimes for the monitor to connect with the sensors. I usually turn things on while I'm breaking down prior to traveling, then they are connected by the time I'm on the road.

Overall I'm very pleased with the system.