Device Function ( 1 ) Real-time monitoring of Vehicle Sensors Tire Pressure temperature ( 2 ) Supports solar charging and USB charging ( 3 ) Numbers for Vehicle Sensors Tire Pressure / temperature alarm can be set ( 4 ) Air leakage alarm , high / low pressure alarm , high temperature alarm ( 5 ) Changeable tire position Features: Type: Intelligent SolarCar Vehicle Sensors Tire Pressure Solar power charging, dont need to charge by connecting car cigarette lighter Colorful LCD Digital displaying, clear to show tire information Rear-time monitoring pressure temperature of 4 tires Low Vehicle Sensors Air Pressure/high temperature alarm High Temperature / Leakage / Low Battery Alarm Intelligent Shock Boot when car moving, dont need to turn on/off Wireless connect by s, easy install Two units (PSI / Bar) changeable, you can set the one you like. External : Easy to install, convenient to replace Dust-Proof / Water-Proof / Anti-theft Anti High Temperate and Cold IP67 Protection / Waterproof Working Temperature: -20-60 Temperature measurement: -30 -85 Battery Life: 3-5 Years, replaceable Package Included: 1 Set Car Vehicle Sensors Tyre Pressure Monitoring System