Feature 1Power Supply Mode: Built in solar panel and battery, support USB cable charging and solar charging, ensuring that the tire pressure monitoring system can work continuously. 2Function: Monitor the real time tire pressure and tire stability monitoring through 4 external sensors, IP67 waterproof, sealed against dust, avoid a variety of harsh climates, with high accuracy. 3Tire Pressure Monitor: Equipped LCD high precision liquid crystal large screen display, which has loud volume alarm sound warning, with working voltage of DC 5V. 4High Performance: Various tire pressure units are optional, the tire pressure monitoring system has long receiving distance, stable signal, and support tire position swap. 5Built in Battery: Built in 4 CR1632 button batteries in the sensor, and the display is built in lithium battery, long battery life, suitable for all kinds of cars, trucks, RVs.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 / FWorking Temperature: -20 -- 85C Storage Temperature: -40 -- 125CTire Pressure Detector Parameters:Transmit Frequency: 433.92mhzPressure Range: 0 3.5 Bar / 0 50 PsiDefault Low Voltage Alarm Value: 1.8 BarDefault High Voltage Alarm Value: 3.2 BarPressure Accuracy: 0.1 Bar / 1.5 PsiOperating Voltage: Dc+2.0 3.6vOperating Temperature: -20 -- 85C Storage Temperature: -40 -- 125CWaterproof Level: IP67Battery: 4 x CR1632 Coin Cell Batteries 120mah 3.0v (Built In)Display Battery: 1 Lithium Battery 5000mah 3v (Built In)Battery Life: 1.5-2 yearsApplicable Models: Cars, Trucks, RVs .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 Monitor4 x Sensor4 x Anti Theft Nut1 x Anti Slip Mat1 x Usb Cable1 x Wrench1 x Instruction Manual