Please note that the USB flash drive contains 2 application installation packages for different Android versions. Supports two Vehicle Sensors Tire Pressure unit display switching: bar/psi Support pairing Support two sets of tires (summer tire / winter tire), switching is very convenient Support position exchange Support for warning value setting Attention: (The internal cannot replace the battery, while the external can replace the battery. (When the goods arrive and the is charged, there is no need to replace the battery) Thisreceiver is only suitable for Android in car DVDs (Android 5.0 or above) Ourdevice does not support WIFI and Bluetooth connections. It can only be connected to the cars Android system through a USB interface. Ourdevice requires a separate USB port to transmit data and cannot work simultaneously with other USB devices. 1. Temperature unit: C, F 2 Alarm value setting options: High voltage alarm setting range: 0.1 Bar~8.0 Bar Low voltage alarm setting range: 0.0 Bar~7.9 Bar High temperature alarm setting range: 50 ~100 3 Pressure units: Bar, Psi, Kpa 4.Display spare tire data: turn on 5 tires, turn off 4 tires 5 Reset default settings: High pressure alarm value (3.1 Bar/45psi) Low pressure alarm value (1.8 Bar/26psi) High temperature alarm value (75 C/167 F)