Feature: 1. Advanced Tire Monitoring System: Our solar tire pressure monitoring system offers real-time monitoring of tire pressure and temperature, ensuring your safety on the road with instant alerts for low pressure or high temperature. 2. Comprehensive Display: Monitor all four tires simultaneously on a clear display that shows pressure in PSI/BAR and temperature in ℃/℉, providing vital information at a glance to keep your journeys safe. 3. User-Friendly Design: With an intelligent auto on/off feature, the display activates when your car starts and shuts down when parked. Plus, the external sensors allow for a quick and easy two-minute installation without the need for tire disassembly. 4. Enhanced Safety Features: Our tire pressure monitor system includes voice alerts for critical warnings such as low tire pressure or sensor battery status, ensuring you're always informed and can take prompt action if needed. 5. Dual Charging Options: Featuring both solar and USB charging capabilities, this car tire pressure monitoring system guarantees continuous functionality regardless of driving conditions, ensuring you never run out of power. Specification: Item Name: Tire Pressure Monitoring SystemMain Material: ABSHost Battery: Built-in 3.7V 300mAh Lithium BatteryExternal Sensor Battery: Built-in CR1632 button cellScreen Pressure Unit: PSI/BARScreen Temperature Unit: ℃/℉Operating Temperature: -20℃ to 70℃Waterproof Rating: IPX7Pressure Range: 0-5 BARTransmission Frequency: 433.92 MHzTransmission Power: >10 dBmCharging Voltage: DC 5.1VProduct Color: BlackProduct Size: 10*5*4.6cm/3.94*1.97*1.81inch Package List: 1 * Host4 * External Sensors4 * Anti-theft Nuts1 * Wrench1 * USB Charging Cable1 * Accessory1 * English User Manual