USB TPMS Car Tire Preure A tire preure monitor is definitely neceary for a car driver. It potentially prevents accidents and protects the tires. It also can save more fuel. With it, your car will work in the best condition. 1.TPMS for Android navigation: the receiver can connect to the car DVD/multimedia player/GPS navigation, install the app (included in the U-disk), and check the tire data on the screen, very convenient to use 2.Quick air leakage alarm: real-time tire preure and temperature monitoring, with 4 tire data displaying on your DVD screen, prevent tire burst, extend the tire's life and save fuel 3.Abnormal alarm: after connecting to the car DVD, it will send you the sound prompt when abnormal occasions occur, such as high and low tire preure alarm, high temperature alarm, etc. 4.Accurate and durable: with advanced and profeional technology, ensure the stable signal and accurate data -Receiver- - Working voltage: DC 5V - Working current: le than 15mA - Working frequency: 433MHz - Working temperature: -40 - 85 Deg.C - Connector: USB -Internal sensor - - Working voltage: 2.1 - 3.5V - Working frequency: 433MHz - Preure measuring range: 0 - 116 psi (0 - 8 bar) - Temperature measuring range: -40 - 125 Deg.C - Working temperature: -40 - 125 Deg.C - Battery: built-in CR2050 (3V, 330mAh) button cell - The Dongle have APK -TPMS for Android navigation: the receiver can connect to the car DVD/multimedia player/GPS navigation, install the app (included in the U-disk), and check the tire data on the screen, very convenient to use Internal External