Got my TST 507 system up and running today. Easy installation. All left to do is tidy up the wires on the repeater and install a small inline toggle switch for the power to the repearter. Took the monitor inside the house and it was receiving the signal inside. Toy Hauler is next to house under cover @ 70 feet away. Watched the pressures today and was surprised tires had an increase of 5 psi from temperature increase and sun just sitting in drive.