Feature: 1. Tire Pressure Monitor: Real time monitoring the tire pressure and temperature for 6 tires simultaneously, IP67 waterproof, sealed against dust, avoid a variety of harsh climates, with high accuracy. 2. Power Supply: Built in solar panel and battery, support USB cable charging and solar charging, ensuring that the tire pressure monitoring system can work continuously. 3. Receiver Parameter: Equipped LCD high precision liquid crystal large screen display, which has loud volume alarm sound warning, with working voltage of DC 5V. 4. High Performance: Bar and psi tire pressure units are optional, the tire pressure monitoring system has long receiving distance, stable signal, and support tire position swap. 5. Built in Battery: Built in 6 CR1632 button batteries in the sensor, lithium battery in the receiver, which has long battery life, durable in use. Specification: Item Type: Tire Pressure Monitoring System Material: ABS Receiver Parameters Receiving Frequency: 433.92mhz Power Supply Mode: USB Power Supply, Solar Power Supply Working Voltage: DC 5V Pressure Unit: Bar/Psi Temperature Unit: °C / °F Operating Temperature: -20 -- 85°C Storage Temperature: -40 -- 105°C Transmit Frequency: 433.92mhz Pressure Range: 0.1-8 Bar Default Low Pressure Alarm Values: 2.8–6 Bar Default High Voltage Alarm Value: 6 Bar Pressure Accuracy: ±0.1 Bar Operating Voltage: DV+2.0 – 3.6v Operating Temperature: -20 -- 85°C Storage Temperature: -40 -- 125°C Waterproof Level: IP67 Battery: 6pcs Cr1632 Coin Cell 120mah 3.0v (Shipped With Built-In Battery) Display Battery 1 Lithium Battery 5000mah 3v (Shipped With Built-In Battery) Battery Life: 1.5-2 Years. Package List: 1 x Tire Pressure Monitor6 x Sensor6 x Anti Theft Nut1 x Anti Slip Mat1 x USb Cable1 x Wrench1 x Instruction Manual