Pacific Dualies PDSSAT-4 PressurePlus EZ TPMS - 10-70 PSI LED Alert Tire Pressure Monitoring System with Anti-Theft for Auto/Trailers/RV/Trucks, (Pack of 4) Operational pressure range: 10-70 psi (0.7-5.0 bar) Stainless steel anti-theft sleeve 7-10 year battery life Stainless steel construction 100 percent self calibrating