1、Tyre pressure that is too high or too low will cause tire wear. TPMS helps reduce tire wear, prevent tire explosions, save fuel, and maintain good car maintenance. 2、With the help of TPMS, we can keep the tire pressure and temperature within the specified range at any time to reduce tire damage and ensure driving safety. 3、Solar charging + USB charging, no need to connect the car cigarette lighter to charge, high power transmission and high performance, wireless connection with the sensor, easy to install. 4、The color LCD digital display can clearly display the tire information during the day and night, and monitor the pressure and temperature of the 4 tires in real time. 5、Low air pressure/high temperature alarm; high temperature/leak/low battery alarm; smart shockproof cover when the car is driving, no need to open/close. 6、Over 40% of traffic accidents on highways are caused by abnormal tire pressures. In order to reduce such accidents, a tire pressure monitoring system (TPMS) must be installed. Item Type: Tire Pressure Monitor Material: PC + Nylon Fiber + Copper Air Nozzle Host Parameters: Built-In Lithium Battery: Capacity 500mAh Model 402040 Display: Pressure, Temperature, Air Leakage Alarm Frequency: 433.92MHz±20.00MHz Working Temperature: -20℃-80℃ Storage Temperature: -30℃-85℃ Charging Method: USB+Solar Charging Voltage: DC 5V Factory Default High and Low Pressure Values: 3.0Bar-2.0Bar Working Current: ≤ 5MA Factory Default Temperature Value: 68℃ Installation Location: Center Console Sensor Parameters: Button Battery: Capacity 60mAh Model CR1632 (Included) Waterproof and Dustproof Rating: IP67 Frequency: 433.92MHz±20.00MHz Sensor Pressure Range: 0-3.5BAR Storage Temperature: -30℃-86℃ Accurate Pressure: +/-0.1Bar Accurate Temperature: +/-3℃ External Working Temperature: -20℃-80℃ Built-In Working Temperature: -40℃ - +120℃ Instructions for Use: Plug and Play How to Install: 1. Screw out the dust cap of the air cock 2. Telescope the air cock 3. Screw the hexagon nut 4. Screw the corresponding sensor into the tire 5. Use the wrench to screw the sensor in the negative direction 6. Use the suds to check whether the tire leak or not 1 x Tire Pressure Monitor Host 4 x Sensor 1 x Manual 1 x Wrench 4 x Nut 1 x Adhesive Sheet