Features： 1、Function: TPMS will monitor the tire pressure and temperature status in real time. The four tires data are clear at a glance. 2、Sleep Mode: The smart sleep mode is designed to save power and provide longer battery life. 3、Multiple Warnings: Tire leak alarm, audible alarm and visual alarm remind the driver to pay attention to driving safety. 4、Optional Unit: Fixed rod, Psi pressure unit and fixed temperature unit are optional, really practical. 5、Premium Material: With the use of high quality ABS material, heat resistant, can deal with harsh environment. Specification： Item Type: Car Tire Pressure Monitor System Material: ABS Type: Number Voltage: 12V Battery Model: CR2050 (built in) Battery Capacity: 300mAh Working Frequency: 433.9200MHz Working Voltage: 5V Working Current (Quiescent Current): ≤30uA Working Current (Dynamic Current): ≤8mA Working Temperature: -40℃-+70℃ Pressure Detection Range: 0-72.5 Psi, 0-5 Bar Charging: Cigarette Lighter Socket Charging Battery Life: 4 external sensor (built in) : 5 years Functions and Characteristic: 1. Real time monitoring of tire pressure and temperature. 2. Smart sleep mode, save power. 3. Tire leak warning 4. Visual and audible warnings for abnormal tire pressure and temperature 5. 4 Tires pressure and temperature data are clear at a glance 6. Fixed rod or Psi pressure unit for selection 7. Fixed temperature unit for selection Package List： 1 x Monitoring System Screen 4 x Sensor 4 x Screw 4 x Gasket 4 x Bracket 1 x Manual