ZUS Smart Tire Safety Monitor (STSM) is an intelligent tyre pressure monitoring system that has been developed as an external kit. It is comprised of a USB receiver and four sensors. The sensors transmit data on tyre temperature and pressure to the receiver, which in turn transmits the information via Bluetooth to the ZUS smartphone app. In case of puncture or overheating of the tyres, the app sends an alert by means of visual and acoustic signals. The app shows not only the real-time tyre data but also the history.