Feature 1Solar and USB Charging: Two charging methods ensure higher charging efficiency, ensure that solar tire pressure monitor system can work continuously. 2Display: With LCD high precision liquid crystal display, clear information display, whether it is day or night, you can easily read tire status data, ensure safe driving. 3Function: Equipped with 2 tire sensors, which could accurately monitor tire pressure and tire stability, when the tire pressure is out of whack, you will get loud volume alarm. 4High Accuracy Sensor: The tire pressure sensor has long receiving distance with stable signal, and support tire position swap, with high accuracy, sensitivity and long battery standby time. 5Easy Installation: The package is equipped with anti theft nuts, wrenches, USB charging cables, instructions and other accessories to ensure fast installation.Item Type:TirePressureMonitoringSystemMaterial: ABSReceiver Parameters Receiving Frequency: 433.92mhzPower Supply Mode: Usb Power Supply, Solar Power SupplyWorking Voltage: DC 5vPressure Unit: Bar/PsiTemperature Unit: C / FOperating Temperature: -20 -- 85C Storage Temperature: -40 -- 105CTransmit Frequency: 433.92mhzPressure Range: 1.06 Bar / 0-15 BarDefault Low Pressure Alarm Values: 2.86 Bar/ 3-13 BarDefault High Voltage Alarm Value: 6 Bar/15 BarPressure Accuracy: 0.1 Bar / 1 BarOperating Voltage: DC+2.0 3.6vOperating Temperature: -20 -- 85C Storage Temperature: -40 -- 125CWaterproof Level: IP67Battery: 2pcs CR1632 Coin Cell 120mah 3.0v (Built In)Display Battery: 1 Lithium Battery 5000mah 3v (Built In)Battery Life: 1.5-2 Years .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Tire Pressure Monitor2 x Sensor2 x Anti Theft Nut1 x Anti Slip Mat1 x Usb Cable1 x Wrench1 x Instruction Manual