USB Android TPMS For Car Radio Main Features:* 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, and keep your car in the best condition.* TPMS suit for android car multimedia navigation dvd player through usb cable connection* Quick air leakage alarm: real-time tire preure and temperature monitoring, with 4 tire data displaying on your head unit screen* Abnormal alarm: it will alert when abnormal occasions occur, such as high and low tire preure alarm, high temperature alarm, etc.Specifications: Receiver - Working voltage: DC 5V- Working current: le than 15mA- Working frequency: 433MHz- Working temperature: -40 - 85 Deg.C- Connector: USBInternal 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