[Real-Time Data Display]Simultaneously monitors and displays tire pressure (PSI) and temperature (°F) for all 4 tires, providing drivers with crucial information at a glance for optimal safety and maintenance. [Dual Charging Options]This solar-powered tire pressure monitoring system can be charged via solar energy or USB, ensuring continuous operation under any conditions for worry-free driving. [Intelligent Power Management]Features a smart auto on/off mechanism that activates when the vehicle starts and shuts down when stationary, conserving energy and extending battery life. [Comprehensive Tire Pressure Monitoring]Compatible with various vehicles including RVs, off-road pickups, and trailers, supporting tire pressure values up to 9.9Bar for enhanced safety and performance. [Easy Installation]Equipped with external sensors, this tire pressure monitor can be installed quickly and easily in just 2 minutes, without tire removal, wiring, or complex balancing procedures. Specifications: Product Name: Tire Pressure Monitoring System Main Material: ABS Main Unit Battery: Built-in 3.7V 300mAh lithium battery External Sensor Battery: Built-in CR1632 button cell Screen Pressure Units: PSI/BAR Screen Temperature Units: ℃/℉ Operating Temperature: -20℃ to 70℃ Waterproof Rating: IPX7 Pressure Range: 0-9.9BAR/0-144PSI Transmission Frequency: 433.92 MHz Transmission Power: >10 dBm Charging Voltage: DC 5.1V