Feature: 1. Real-time Monitoring: The solar tire pressure monitoring system provides simultaneous display for all four tires, ensuring you have accurate and up-to-date information on tire pressure and temperature. It also monitors the in-car temperature in real time, enhancing your driving safety. 2. Intelligent Alert: Our tire pressure monitor triggers timely warnings for low/high tire pressure and high temperatures. It also notifies you when the sensor battery is low, giving you peace of mind while driving. 3. Dual Charging Options: Equipped with innovative solar power and Type-C charging technology, this tire monitoring system ensures continuous operation by harnessing solar energy or through convenient USB charging. 4. Concealed Security: The internal sensors are cleverly designed to remain hidden within the tire, preventing theft and making installation simple and hassle-free, allowing for easy monitoring without external vulnerabilities. 5. Effortless Operation: The car tire pressure monitoring system automatically powers on when the vehicle starts and shuts off when stationary, maximizing battery life and offering a user-friendly experience without manual intervention. Specification: Item Name: Tire Pressure Monitoring SystemMain Material: ABSHost Battery: Built-in 3.7V 300mAh Lithium BatteryInternal Sensor Battery: Built-in CR1632 button cellScreen Pressure Unit: PSI/BARScreen Temperature Unit: ℃/℉Operating Temperature: -20℃ to 70℃Waterproof Rating: IPX7Pressure Range: 0-5 BARCharging Voltage: DC 5.1VProduct Color: BlackProduct Size: 10*6.7*3.2cm/3.94*2.64*1.26inchPackage Information: Package Size: 15.7*13*5.5cm/6.18*5.12*2.17inchPackage Weight: 272g Package List: 1 * Host4 * Internal Sensors1 * USB Charging Cable4 * Screws1 * Double-Sided Adhesive Tape1 * English User Manual