This wireless tyre tension control system is supplied with 4 external sensors and a digital monitor to monitor the tyre voltage and temperature of your vehicle 24-hour every . The TPMS receiver can be connected to Android car DVD via USB port. Feature: By using the advanced wireless sensors that highly integrated pressure and temperature sensor we the top of the line and reliable TPMS for you. Voltage and temperature display data on Android Auto DVD screen. Secure a safer driving experience for you. Real-time detection of tire pressure/temperature, battery power, leakage / low battery alarm. Instant o alarm of abnormal pressure or temperature. Sound Alarm via car loudspeakers and screen alarm when deviation occurs. Quick update tire tension and temperature data to Android TPMS App. Automatic sleep to save energy after parking. Specifications: TPMS Receiver: Working Voltage: DC5V Working current: 15mAWorking Temperature: -20 85 Working Frequency: 433.92 MHz External Sensor: Working Temperature: -20~85 Working humidity: max 95 Transmit power: R&D environment test below -17db Working frequency: 433.92 MHz Tire monitoring range valve: 0~8Bar Deviation0.013 Battery Life: 2 year Package size: 16*14*6cm Packge weight: 180g Pakage list: 1 set Tyre Pressure Monitoring System