Product Information -Solar power +USB charging, dont need to charge by connecting car cigarette lighter;-Colorful LCD Digital displaying, clear to show tire information;-Rear-time monitoring preure & temperature of 4 tires;-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;-Internal sensors and external sensors options, meets all your need;-Two units (PSI / Bar) changeable, you can set the one you like. Main Feature Intelligent Solar TPMS Car Tire Preure Can Adapt To Various Environment Suitable for many kinds of car Suitable for Cars, ORV, SUV, MPV, Minibus, Wagon, etc. Real-Time Monitoring Screen display can clearly display 4 tires' preure andtemperature in real-time to ensure driving safety Solar Charging + USB Charging Accurate early warning,safer driving,more reauring. Risk Warning The receiver can display the time and monitor the tire preure and temperature in real time!Rapid induction abnormality, beep early warning! K19/K19P How to set the time? How To Choose Sensors ? External Sensor (Optional) -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(Free 4 backup batteries). Internal Sensor ( Optional ) -Please install in by Profeional car center;-More stable and accurate;-Anti High Temperate and Cold;-IP67 Protection / Waterproof;-Working Temperature: -40-125;-Battery Life: 5 Years(Battery can't be replaced). K19/K19P Product Display K10 Product Display How to replace the External Sensor battery? 1. Remove the dismantling gasket2. Wrench the shell with a wrench3. Remove the battery4. Replace a new battery.