•【Real-Time Monitoring】Simultaneously measures and displays tire pressure (PSI) and temperature for up to 4 tires, providing crucial information at a glance for optimal safety and maintenance. •【Dual Charging Options】Features both solar and USB charging capabilities, ensuring continuous operation under any conditions for worry-free driving. •【Intelligent Power Management】Smart auto on/off mechanism activates when the vehicle starts and shuts down when stationary, conserving energy and extending battery life. •【Versatile Compatibility】Suitable for various vehicles including RVs, off-road pickups, and trailers, supporting tire pressure readings up to 9.9 Bar (144 PSI) for enhanced safety and performance. •【Waterproof Design】With an IPX7 waterproof rating, this tire pressure monitoring system ensures reliable performance in various weather conditions. Specifications: •Main Material: ABS •Main Unit Battery: Built-in 3.7V 300mAh lithium battery •External Sensor Battery: Built-in CR1632 button cell •Pressure Units: PSI/BAR •Temperature Units: ℃/℉ •Operating Temperature: -20℃ to 70℃ (-4℉ to 158℉) •Waterproof Rating: IPX7 •Pressure Range: 0-9.9 BAR / 0-144 PSI •Transmission Frequency: 433.92 MHz •Transmission Power: >10 dBm •Charging Voltage: DC 5.1V Package included: •1 x Host •4 x Internal Sensor •4 x Anti-theft Nut •1 x Wrench •1 x Double-sided Tape •1 x Charging Cable •1 x English Manual