Wireless Solar Tire Pressure Monitor System with 4 Sensors 0 5 Bar Real Time Display Voice Alarm for Car SUV Off Road Vehicle Features： 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 and Anti-theft Design: With an intelligent auto on/off feature, the display activates when your car starts and shuts down when parked. With built-in sensors safely hidden inside the tire, this tire pressure monitor system is designed to prevent theft while providing greater safety and security for your vehicle. 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 System Main Material: ABS Host Battery: Built-in 3.7V 300mAh Lithium Battery External Sensor Battery: Built-in CR1632 button cell Screen Pressure Unit: PSI/BAR Screen Temperature Unit: ℃/℉ Operating Temperature: -20℃ to 70℃ Waterproof Rating: IPX7 Pressure Range: 0-5 BAR Transmission Frequency: 433.92 MHz Transmission Power: >10 dBm Charging Voltage: DC 5.1V Product Color: Black Product Size: 10*5*4.6cm/3.94*1.97*1.81inch Package List： 1 * Host 4 * Internal Sensors 1 * USB Charging Cable 4 * Screws 1 * Accessory 1 * English User Manual