With Alarm: The car tire pressure monitor system provides audible alarms when tire pressure and temperature are abnormal. Remind you of the tire condition of the vehicle to ensure safe drivingSolar Tire Pressure Monitor: USB and solar dual charging system, large storage simultaneous display of tire pressure and temperature, Fast Sensing abnormality, accurate alarm4 External Sensors: Car tire pressure monitor is easy to install, free placement. monitor the temperature and pressure of the tires for you, extend the service life of the tires, and ensure the security of the driverDigital Screen: The car tire pressure monitor system with LCD digital screen, whether it is day or night, you can easily read data. can be fixed on the surface of center console stablyWide Compatibility: Applicable to all models suitable for tire pressure ranges of less than 4.0 Bar, such as cars, SUV, etc. The wireless installation make it easy to use, and save space. It takes a few minutes to display tyre's pressure and temperature after installation Specification: Tire Pressure Monitor:Working voltage: 5 VWorking Frequency: 433.92Mhz0.1MhzWorking Current: 30mAWorking Temperature: -40C - 85CExternal Sensors:Working voltage: 2.1V-3.6VOperating temperature: -40C - 90CWaterproof grade: IP67Pressure range: 0-5.0BarTransmission frequency: 433.92MhzTransmit power: