COLORFUL DIGITAL LCD DIGITAL LCD Tire Pressure Monitoring System provides colorful screen, beautiful visual appearance. The display can help you better monitor the condition of the tires, it can be placed anywhere stably and you can easily read the data. 5 ALARM MODES Including fast leak alarm, high/ low-pressure alarm, high-temperature alarm, display low power alarm, and sensor battery low power alarm, to ensure your safe driving. (Press any button will stop alarming) 2 CHARGING WAYS Support USB cable charging and solar charging. It does not occupy the car cigarette lighter socket, ensure the tire pressure monitoring system will work continuously. And the battery has a long endurance (each charge can be used for one month). [Solar power charging is unstable because of weather, it only can help extend battery"'"s energy consuming.Please charge by cable when monitor is out of power] SUITABLE FOR CAR TYPE NOT INCLUDE TRAILER AND RVSuitable for tire pressure range less than 4.0 Bar58PSI, like sedans, SUV, MPV . SMART SENSORS 4 wireless external or internal sensors, easy installation & receive real-time signal. The pressure and temperature data can be switched, with pressure unit: PSI/Bar and temperature unit: C/F selectable.(The internal sensors needs to be installed at the garage, and the tire needs to be dynamically balanced after installation.)