Features: Real-time Tire Pressure Monitoring: Provides accurate tire pressure data to ensure safety and performance while driving. Multi-sensor Compatibility: Dynamically monitors the tire pressure of 4 wheels simultaneously, preventing tire blowouts, improving fuel economy, extending tire life, and ensuring driving safety. SMART MONITORING: Connects to your smartphone via Bluetooth to receive real-time alerts and notifications about changes in tire pressure even when you are away from the vehicle. WIRELESS & EASY TO INSTALL: Our car tire pressure monitoring system features a hassle-free installation process and requires no complicated wiring, saving you time and effort. Satisfactory Service: If you have any questions, please contact us in time. We will provide you with better products and services. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Communication method: Bluetooth 5.0 Working voltage: 2.1-3.3V Sleep current: 1µA Bluetooth working frequency: 2.4GHz Bluetooth transmit power: 4dB Response time: 4S Waterproof rating: IP67 Working humidity: 95% Tire pressure monitoring range: 0-100PSI Tire pressure monitoring error: ±3PSI Working temperature: -30-+70℃ Storage temperature: -30-+70℃ Battery life: 2-3 years Battery capacity: 140mAh (external)