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 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-Build-in sensors and external sensors options, meets all your need-Freescale chip sensors and fit on almost 98% cars on market Build-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-Battery Life: 5 Years;Not replaceable 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 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 Solar+ USB Charging Intelligent On and Off When the car is started, the vibration of the machine is automatically opened and the machine is shut down automatically when it is still, without manual operation. How to choose a sensor? External Sensors Built-in Sensor Adapt to a variety of environment, high temperature and low temperature K07/K07P Product Display K01 Product Display Packing List K01: 1 x Packaging box 1 x Monitor 1 x USB Power Cable 4 x External Sensor 2 x Spare Battery(GIFT) 1 x User manual K07: 1 x Packaging box 1 x Monitor 1 x USB Power Cable 4 x External Sensor 2 x Spare Battery(GIFT) 1 x User manual K07P: 1 x Packaging box 1 x Monitor 1 x USB Power Cable 4 x Built-in Sensor 1 x User Manual