Features:*Tire Preure Monitoring System lets you get real-time tire preure data, temperature data and status, always keeping an eye on car performance.*Combined with the solar energy display that is green, low carbon and renewable, enabling you to charge the device faster and conveniently.*4 wheels' tire preure and temperature display simultaneously, high/low tire preure alarm, high temperature alarm and air leakage condition alarm.*The real-time tire preure data, reliable alarm system delivers alerts once an unusual situation occurs, very convenient and practical.*TPMS adopts wirele transmiion, and no wire connection required, easy installation, and it automatically sleep when there is no vibration.Specifications:Monitor:Display screen: LCDOperating temperature: -20 ~ 80Working voltage: 3.5-4.2VDaytime operating current/Night operating current/Standby current: 8dBmOpen Distance:30MBattery(each sensor): 1* CR2050 3V 330mAhSensor size(each): Approx. 6.5*3.6*1.5cmSensor weight(each): Approx.30gPackage Size: 21*15*6cm / 8.27*5.91*2.36in.Package Weight: 370g / 13.05ozPackage List:1 * Displayer4 * Internal Sensors4 * Cycle Valves1 * Non-slip Mat1 * Bag of Screws1 * User Manual (English)