【Real-Time Data Display】Simultaneously monitors and displays pressure (PSI) and temperature (℉) for all six 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 in any condition for worry-free driving. 【Intelligent Power Management】Features a smart auto on/off mechanism that activates when the vehicle starts and deactivates when stationary, conserving energy and extending battery life. 【Comprehensive Tire Pressure Monitoring】Suitable for various vehicles including RVs, off-road pickups, and trailers, supporting tire pressure values up to 9.9Bar (144PSI) to enhance safety and performance. 【Easy Installation】Equipped with external sensors, this tire pressure monitor can be quickly and easily installed in just 2 minutes without tire removal, wiring, or complex balancing procedures. Specifications: Main material: ABS Host battery: built-in 3.7V 300mAh lithium battery External sensor battery: built-in CR1632 button battery Screen pressure unit: PSI/BAR Screen temperature unit: ℃/℉ Working temperature: -20℃ to 70℃ Waterproof level: IPX7 Pressure range: 0-9.9BAR/0-144PSI Transmitting frequency: 433.92 MHz Transmitting power: >10 dBm Charging voltage: DC 5.1V Product size: 9.4*6.7*2.85cm/3.7*2.64*1.12inch