TPMS Car Tire Preure Alarm Monitor System with 4 External Sensors Solar Intelligent Display Tyre Preure Temperature Warning Specifications and functions -2 Charging Ways - Support USB cable charging and solar charging -Colorful LCD Digital displaying, clear to show tire information -Rear-time monitoring preure & temperature of 4 tire -Low air preure/high temperature alarm -High Temperature / Leakage / Low Battery Alarm -Intelligent Shock Boot when car moving, dont need to turn on/off -Wirele connect by sensors, easy install -Fit on almost 98% cars on market External Sensor -Easy to install, convenient to replace -Dust-Proof / Water-Proof / Anti-theft -Anti High Temperate and Cold -IP67 Protection / Waterproof -Working Temperature: -20-80 -Battery Life: 2 Years, replaceable Please turn on monitor before install sensor 1.Pre and hold on the poewer button to turn on monitor; 2.Install external sensors one by one.