1. Dynamically monitor tire pressure on 4 wheels simultaneously, helping prevent damage from flat tires, improve fuel efficiency, extend tire lifespan, and enhance driving safety. 2. Designed as a direct tire pressure monitoring system, installs pressure and temperature sensors on the tires, then displays real-time data on smartphones (Android, iOS) via Bluetooth connection. 3. During travel, tire pressure and temperature are displayed in real time and alerts are sent when abnormal readings are detected, for improved safety. 4. TPMS supports both Android and iOS devices and requires Bluetooth 5.0. Product name: TPMS Bluetooth Tire Pressure Monitor Product style: external sensor Product specifications: 4 sensors Detection range: 0-8.0 Bar Working voltage: 3V Working current: 100mA Bluetooth operating frequency: 2.4GHz Bluetooth transmit power: 0dBm MAX Response time: less than or equal to 5 seconds Display mode: mobile APP Waterproof rating: IP67 Operating humidity: up to 95% Tire pressure detection range: 100-1300kPa Tire pressure detection accuracy: ±10kPa Tire temperature detection accuracy: ±3°C Product battery: replaceable 140mAh CR1632 (external sensor) Battery life: 3 to 5 years (external sensor) Color: black Material: ABS plastic Package Contents: 4 x Sensors 4 x Screws 1 x Wrench 1 x English Manual Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement error is permitted within +/- 1-3cm.