Main Features:- Dynamically monitor tire preure on 4 wheels at same time,prevent damage from flat tire,Improve fuel efficiency, prolong tire lifespan, ensure driving safety.- Built-in lithium-ion battery, LCD screen displays tire preure and temperature simultaneously.- Each sensor is controlled by individual chip to display on car dvd screen immediately once tire preure changes.- Support touch control on car dvd menu to make matchup with different sensors from same kit to make sure each sensor on right wheel.- Tire preure and temperature alarm standard level can be set in setting.- Designed for most of 4-tire cars Internal Sensor Related Parameters:Operating temperature ... -40-120Preure range ... 0-3.5Bar(51Psi)Preure sensitivity ... 0.1Bar(1.5Psi)Temperature sensitivity ...1Transmiion power ...