Features： 1、Dynamically monitor the tire pressure of 4 wheels at the same time to prevent tire blowouts, improve fuel efficiency, extend tire life, and ensure driving safety. 2、It is designed as a direct tire pressure monitoring system by installing pressure and temperature sensors on the tires and displaying data in real time on the mobile phone (for Android for IOS) via Bluetooth connection. 3、During driving, tire pressure and temperature are displayed in real time, and an alarm is issued when statistics are abnormal. Supports for Android and for iOS, Bluetooth 5.0 or higher is required. 4、The 4 sensors adopt waterproof, anti‑corrosion, and anti‑theft technologies, which are fully capable of rainy weather and are suitable for outdoor use. 5、Using superior chip, high sensitivity and high stability, high accuracy of measuring pressure and temperature. The battery life is as long as 3‑5 years, and it is easy to replace. 6、It can help you save up to 11 cents of fuel per gallon when inflated correctly. And you can maintain the car tires yourself, without having to go to the car dealer. Specification： Item Type: Tire Pressure Monitor Material: ABS + Copper Specification: 1 Set (including 4 external sensors, fixing screws and mounting wrenches) Bluetooth Version: 5.0 Kernel: for ARM MO Working Voltage: 3V Working Current: 100μA Sleep Current: ≤2.2μ A Bluetooth Operating Frequency: 2.4GHz Bluetooth Transmit Power: 0dB MAX Response Time: ≤5s Display Mode: APP mobile phone interconnection, mobile phone display Waterproof Rating: IP67 Tire Pressure Detection Range: 100-1300kPa Tire Pressure Detection Accuracy: ±10kPa Tire Temperature Detection Accuracy: ±3℃ Working Temperature: -30℃-+80℃ Storage Temperature:--30℃- +85℃ Battery Capacity: Button battery, CR1632 x 1,140mAh (built-in) Battery Life: 3-5 years Single Sensor Weight: Approx. 10g/0.4oz Application: Suitable for car/off-road vehicle/pickup truck/SUV/MPV, universal for four-wheeled vehicles APP Installation: Option 1: Scan QR code on card, then download and install; Option 2: Search for BEL TPMS in for APP Store or for Google play Store, then download and install. Pairing Instructions: Recommended Method of Use: 1. Open the application by scanning the QR code link. Scan the QR code card with the words One-Key Binding or scan the corresponding sensor ID code to complete the link. 2. Install and wait for the application to open. Install the sensors on the corresponding tires according to the sensor markings until the installation on each sensor is completed. Note: If the sensor data cannot be obtained, please reinstall the sensor (install slowly so that the air pressure is in full contact with the sensor) Package List： 4 x Tire Pressure Sensors 4 x Screws 1 x Wrench 1 x Manual