Features:Real-Time Tire Pressure Monitoring: Provides accuracy tire pressure data to ensure safety and performance while driving.Multi-sensor compatibility: Dynamically monitors the tire pressure of 4 wheels at the same time, prevent tire blowout damage, improve fuel efficiency, prolong tire life, and ensure driving safety.SMART MONITORING: Connects to your smartphone via Bluetooth-compatible 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 setup 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 effect2.Please allow 1-3cm deviation due to manual measurementDescription:Communication method: Bluetooth-compatible 5.0Working voltage: 2.1-3.3VQuiescent current: 1ABluetooth-compatible working frequency: 2.4GHzBluetooth-compatible transmit power: 4dBResponse time: 4SWaterproof grade: IP67Working humidity: 95Tire pressure monitoring range: 0-100PSITire pressure monitoring error: 3PSIWorking temperature: -30-70CStorage temperature: -30-70CBattery life: 2-3 yearsBattery capacity: 140mAh externalPackage List:4pcs x Tire Pressure Monitoring System