Passenger Car Tire Pressure Monitoring System Features: Easy installation and reliable Clear and large display Solar power supported Build in with rechargeable lithium battery Automatic waking up when vehicle start in motion Automatic backlight on/off for daytime or nighttime High pressure and low pressure setting by user High temperature setting by user Visual and audible alerts for high/low pressure, high temperature and fast leakage Pressure unit selectable: PSI, BAR Able to read up to 5 tires Automatic pair sensor with tyre location, no need to input sensor ID Specification: Monitor: Operation Temperature:-20°c~+80°c Operation Voltage: 8-24V Frequency: 433.92MHz Weight: 120g Size: 90*60*23cm(L*W*H) Sensor: Pressure Range:0-87PSI (0-6Bar) Pressure Sensitivity:0.1 Bar or 1..5PSI Temperature Sensitivity:±3°c Transmission Power: 10dBm Transmission Frequency:433.92MHz Battery Life: 2 years (CR1632) Operation Temperature:-40°c~+85 °c Weight:11grams Size:Diameter:21mm, hiehgt:21mm