Informacin del producto -Solar power + USB charging, no need to charge by connecting the car cigarette lighter;-Colorful, Clear LCD Digital Screen to display tire information;-Rear time control of preure and temperature of 4 tires;-Low air preure / high temperature alarm;-High temperature / leak / low battery alarm;-Smart shock start when the car is moving, no need to turn on / off;-Wirele connection by sensors, easy installation;-Options of internal sensors and external sensors, meets all your needs;-Two interchangeable units (PSI / Bar), you can configure the one you want. 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 4 Tires Solar TPMS Solar Charging I USB Charging I Low power consumption 1:Tire Abnormality 2:To Predict the Eak 3:Tire Preure Prompt 4:Beep Prompt 5:Solar Charging 6:Waterproof And Dustproof 7:Four Rounds of the Same Display 8:Reduce Wear Real-time Monitor Dangerous! 70% of high-speedaccidents are caused by abnormal tire preure! Intelligent Solar TPMS Car Tire Preure.Accurate early warning,safer driving,more reauring. Buzzer Abnormal Alarm The receiver can display the time and monitor the tire preure and temperature in real time!Rapid induction abnormality, beep early warning! is suitable for school buses, mixer trucks, trucks, special vehicles, SUVs, etc. The screen can clearly display the 4-inch preure and temperature in real time to ensure driving safety How to choose sensors? External SensorEasy and convenient 1. Accurate preure data/temperature with a slight error 2. Inflating and deflation need to be disaembled 3. Battery life of about 2-3 years Built-in Sensor Once and for all 1. Accurate preure/temperature data 2. Inflating and deflation do not require disaembly 3. Battery life of about 5-6 years External sensor (optional): -Easy to install, convenient to replace;-Dust-proof / waterproof / anti-theft;-Anti high temperature and cold;-IP67 protection / waterproof;-Working temperature: -20 -80 ;-Battery life: 2 years, replaceable (4 free backup batteries). Internal sensor (optional): -Please install it in the car profeional center;-More stable and accurate;-Anti high temperature and cold;-IP67 protection / waterproof;-Working temperature: -40 -125 ;-Battery life: 5 years (battery can not be replaced). Product Display 4 Tire TPMS 1. Left key 2. Set key 3. Right key 4. Solar energy 5. Temperature unit 6. Tire preure display 7. Tire preure unit 8. Temperature display 9. Power display 10. USB charging port Packing List K10: 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 K10P: 1 x Packaging box 1 x Monitor 1 x USB Power Cable 4 x Built-in Sensor 1 x User Manual