TPMS v2 (Tire Pressure Monitor System w/ tilting monitor) Real-time monitoring of pressure, leaks, temperature, and even battery voltage P1800 A. Real-time monitoring: - tire pressure (PSI or bar) - tire temperature (C or F) - battery voltage B. Warning alarm: - air leak / tire puncture - over and under pressure - over heating tires C: Other functions: - USB phone/gadget charger - voltmeter D: Easy to use: - plug and play! - batteries of sensors lasts for 3 years - easy to change batteries of se