TPMS CAREUD Cigarette Lighter Type Car Tire Pressure and Temperature Monitoring System with 4 External/Internal Sensors Description: 1. The devices can be directly plugged in the car cigarette lighter with USB charging port and 4 replaceable battery sensors for power supply; 2. Patented replaceable battery sensor design can meet the needs of owners in more different industries; 3. You can highly accurately measure the real-time tire temperature and pressure. Data of the 4 wheels can be displayed at the same time; 4. Rapid tire leakage detection can extend tire life, save fuel, balance tire pressure and escort for safe driving; 5. PSI, BAR two kinds of pressure unit selection, ° and ° two kinds of temperature unit selection; 6. Special TPMS radio frequency technology is used for the sensor to refresh the real-time data and provide a rapid alarm when there are tire pressure and temperature anomalies; 7. Imported Freescale program chip and high-temperature-resistant explosion-proof battery are used to ensure long-lasting power and accurate monitoring data; 8. You can purchase the same type of battery for replacement after the battery dies, without having to