nonda ZUS AccurateTemp Smart Tire Safety Monitor, TPMS with APP, Slow Leak Detection, Real Time Pressure & Temperature Alerts, Tire Pressure Monitoring System with 4 Upgraded External Cap SensorsBOOST DRIVING SAFETY: Real time tire pressure (PSI kPa Bar) and temperature (F C) alerts warn you of tire pressure issues to prevent dangerous blowouts. SLOW LEAK DETECTION: First ever slow leak detection with our AccurateTemp technology, enabling the ZUS APP to accurately detect any slow leak. SELF INSTALL IN 10 MINUTES: Anyone can set up in 3 easy steps. Take it with you on your next trip and install it on your rental car in just 10 minutes.