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 4/6 tires-Low air preure/high temperature alar-High Temperature / Leakage / Low Battery Alarm-Intelligent Shock Boot when car moving, dont need to turn on/off-Wirele connect by sensors, easy install-Build-in sensors and external sensors options, meets all your need-Freescale chip sensors and fit on almost 98% cars on marketBuild-in 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-Monitoring Preur:0-8bar-Battery Life: 5 YearsExternal 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-Monitoring Preur:0-8bar-Battery Life: 2 Years, replaceable Please turn on monitor before install sensors 1.Pre and hold on the poewer button to turn on monitor; 2.Install external sensors one by one. 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. Main Features Real-Time Monitor Intelligent Solar TPMS Car Tire Preure.Accurate early warning,safer driving,more reauring. Risk Warning All Weather Adoption Suitable For Most Types Of Vehicles Suitable for Cars, ORV, SUV, MPV, Minibus, Wagon, etc. Solar Charging+USB Charging aily use of high conversion solar energy charging, cloudy days or underground garage parking for too long, can be USB charging. How To Choose Sensors? External Sensors Internal Sensor Product Display K10/K10P:4 Tires sensorK11:6 Tires sensor Product List 4 External Sensor(SKU:K10): 4 Internal Sensor(SKU:K10P): 6 External Sensor(SKU:K11):