Since we monitor ten tires on our motorhome and toad, the $80 six sensor system doesn't cut it. Our TST 507 system has worked well for us since 2013, reporting both pressures and temperatures. The easily replaced sensor batteries last about a year for us in full time use, and replacements cost less than a dollar each. Over the years we've had the system, the temperature reporting function has alerted us to a sticking brake caliper on our toad and a failing wheel bearing on our previous motorhome. The pressure sensors have reported a couple of slow leaks and one faster leak as well.
