Features: Tire Pressure Monitoring System(TPMS), helps the driver get real-time tire pressure data, temperature data and status, always keeping an eye on your car's performance. Cigarette lighter power charging, LCD colorful display, real-time monitoring the tire pressure & temperature. Showing four wheels' tire pressure and temperature simultaneously, very convenient for you to check the tire conditions. High/low tire pressure alarm, high temperature alarm and air leakage condition alarm, ensuring your driving safety. Easy to install, wireless transmission, no wiring needed. Specifications: Monitor: Type: Cigarette lighter Display Screen: LCD Operating Frequency: 433.92Mhz+/-20KHZ Operating Voltage: DC12-24V Operating Current: ＜30mA Receive Sensitivity: -115dBm Pressure Unit: BAR/PSI Working Temperature: -20 ℃ -80 ℃ USB: 5.1V 1A Monitor Size: Approx.8*5*3cm Monitor Weight: Approx.39g Sensor: Working Voltage: 2-3.6V Standby Current: ＜1uA Operating Frequency: 433.92Mhz+/-20KHZ Working Temperature: -40 ℃ -125 ℃ Battery: 1*CR2050 3V 330mAh Transmission Mode: FSK Transmitted Power: ＞8dBm Sensor Size(each): Approx.6.5*3.6*1.5cm Sensor Weight(each): Approx.30g Package Information: Package Size: Approx.21*15*6cm/8.27*5.91*2.36in Package Weight: Approx.335g/11.82oz Package List: 1*Displayer 4*Internal Sensors 4*Cycle Valves 1*Bag of Screws 1*User Manual(English)