Why You Need TPMS There are several reasons why you should own a tire pressure monitoring device (TPMS) on your automobile. First, it will warn you that at least one or more tires are under-inflated, in all likelihood growing dangerous using conditions. Plus, this solar TPMS can tell you more about the temperature and the current state of your tires. When you are on a road trip, make sure you are doing it right! This solar TPMS sends all of this information to a centralized manage module in which it’s analyzed, interpreted, and, if tire stress decreases highely, this information will be transmitted at once to your dashboard wherein the indicator light will be highlighted for your attention. Each sensor has a unique serial number so the machine distinguishes between your vehicle and other people's vehicles. What You Will Get - High-definition TFT color screen display - Supports solar energy / USB charging - Shows four wheels' tire pressure and temperature simultaneously - High and low tire pressure alarm - High temperature alarm - Air leakage condition alarm - Multiple information: sensor / display's battery capacity display, solar energy charging display, spare tire display - Non-stop monitor always keeps an eye on your car's performance - Reliable alarm system delivers audio alerts whenever an unusual situation occurs - Low power alarm Intelligent Alarm 1. Leakage Alert When the tire leaks continuously, the displayer will show the declining pressure data and fault icon, as well as send an alert 2. High Temperature Alert When the tire temperature is higher than the setpoint ( default 70 Deg.C ), the pressure and fault icon on the displayer will flicker with buzzer warning ( temperature setting range: 60 - 90 Deg.C ) 3. High Pressure Alert When the tire temperature reaches to the upper limit value ( default 3.0 Bar ), the pressure and fault icon on the displayer will flicker with buzzer warning ( upper limit value setting range: 1.1 - 5.0 Bar ) 4. Low Pressure Alert When the tire temperature reaches to the lower limit value ( default 2.0 Bar ), the pressure and fault icon on the displayer will flicker with buzzer warning ( upper limit value setting range: 1.1 - 4.9 Bar ) Specification Brand: ZEEPIN Model: C220 Category: TPMS Install way: external Display way: screen Sensor working voltage: 2 - 3.6V Display working voltage: 3.5 - 4.2V Optional pressure units: psi / bar Optional temperature units: Deg.C, Deg.F Operating frequency: 433.92MHz + / - 20KHz Display battery capacity: 500mAh Sensor battery supply: CR1632 battery Sensor battery capacity: 120mAh Factory Default Setting High pressure alarm data: 3.0 bar Low pressure alarm data: 2.0 bar High temperature alarm data: 70 Deg.C Parameter Setting Range High pressure alarm data: 3.0 - 5.0 bar Low pressure alarm data: 1.0 - 2.0 bar High temperature alarm data: 60 - 90 Deg.C