The system use the TPMS sensor installed inside the tire to take measurement of internal pressure and temperature, when tire pressure is normal, the sensor transmit measurement information through RF signal to the TPMS displays every 2 minutes.(when there is a leak, Repeaters would immediately launch), when the display receives low voltage, high pressure and high temperature or a flat tire information, it gives alarm indication; meanwhile, when the battery voltage sensor is below 2.1 V, it also gives alarm indication, to allow the driver to change sensors in time.
