6 Wheel Truck Tire Pressure Monitoring System Wireless Solar Power TPMS Monitor with 6 Sensors for Light Truck RV 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