Put the power of technology to work for you with the most advanced tire pressure monitoring systems. TSTs efficient and reliable design makes monitoring your tires easier than ever. Not only will you gain peace of mind when you choose the most trusted brand on the market, but youll get top-rated customer service, online product support, and a full three-year warranty. Key Features: Includes a repeater to maximize system performance User replaceable CR1632 batteriesAnti-theft feature on sensorsMonitor up to 110 tires 14 in the power position4 trailers at 24 tires eachUser adjustable high and low-pressure alarm levelsAudible and visual alerts on displayDisplay can monitor up to 4 trailers For use on rubber or metal valve stemsKey Display Features: 3.5" diagonal screenMonitors up to 4 different trailers/towed vehiclesMonitor select or drop vehicles with a single push of a buttonProvides audible and visual alerts2 mounting optionsMonitors tire pressure and temperatureKit includes: TST wide screen color display4 screw-on cap style sensorsOne 507 repeater2 installation wrenchesRubber display mountSuction cup display mountUSB and 12V charging capabilitiesDetailed user manual3 Year Warranty Light, compact, & water-resistant sensors Pressure range of 0 to 218 pounds Accurate pressure readings | TST 507 Series 4 Sensor TPMS System with Color Display