Specifications and functions -Solar power charging, don"'"t 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 air pressure/high temperature alarm -High Temperature / Leakage / Low Battery Alarm -Intelligent Shock Boot when car moving, don"'"t need to turn on/off -Wireless 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 market Internal Sensor -Please install in by Professional car center -More stable and accurate -Anti High Temperate and Cold -IP67 Protection / Waterproof -Working Temperature: -40-125 -Battery Life: 5 Years 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, service life of external sensors Other products * 2 How to replace the External Sensor battery? 1. Remove the dismantling gasket; 2. Wrench the shell with a wrench; 3. Remove the battery; 4. Replace a new battery. Real-time monitoring suitable for many kinds of car Low temperaturehigh and low pressure External Sensor and Internal Sensor Mounting Methods can adapt to various environments intellignt power on/off without hands Buzzer abnormal Alarm Take you away from danger Detail Description What will you get in the package? 1 * Tire Pressure Monitor 4 * External Sensor or Internal Sensor (Battery Included) 1 * USB Cable 4 * Anti-lost nuts 1 * Spanner 1 * User Manual