TST (Truck System Technologies)

TST (Truck System Technologies) has been building tire pressure monitoring systems for the RV and commercial trucking market since 2009. The brand focuses specifically on the long-vehicle, high-PSI segment that generic consumer TPMS systems often underserve — their cap sensors support up to 218 PSI, and their display units include dedicated trailer mode to monitor towed vehicles.

TST is a Clarience Technologies company headquartered in San Antonio, TX, with USA-based customer support. The 507 Series — color display, cap sensors, repeater included — is their mid-range RV offering; the 770 Series adds a touchscreen. The brand carries a three-year warranty, which is longer than most competitors in the category.