Why we need TPMS?-Tire Preure Monitoring System, also called TPMS, uses preure monitoring sensors within each tire to monitor specific preure levels.-Combined with the solar energy display, it lets driver get the real-time tire preure data, temperature data and status, warning meages at once.-With the TPMS, we can keep the tyre working within the specified preure and temperature range at any time to reduce the damage of the tyre for safe driving.Why Choose TPMS?TPMS provides real-time data display of 4 tires. Each sensor uses Infineon original chip. Its signal transmiion is stable, the battery life is long, and the installation and operation are simple, escorting your driving safety.Things you must know before use1) Connect the sensor and monitorWe have matched your monitor with the sensors, you just need to pre and hold "-" to turn on the monitor, and then install the sensors according to the tire sequence, more user settings can watch our manual.2) If there is a puncture accidentTPMS could not avoid the puncture caused by sharp objects or damaged tires. Because TPMS can only monitor the air preure and temperature over a period of time, but cannot monitor instantaneous changes. So it is only suitable for avoiding tire abnormalities caused by changes in air preure or temperature, which occur slowly, not instantaneously.FRIENDLY REMIND: Please do a comprehensive tire inspection for at least one month and ask your tire technician to replace your faulty tire in time.What will you get in the package?1 * Tire Preure Monitor4 * External Sensor (Battery Included)1 * USB Cable4 * Anti-lost nuts1 * Spanner1 * User Manual