Specifications and functions TPMS ensures proper tire preure, which is neceary to ensure vehicle safety, handling, comfortable driving, and tire life.-Solar charging board & USB Charging,high charging efficiency and durable-Colorful LCD Digital displaying, clear to show tire information-Rear-time monitoring preure & temperature of 4 tires-Low air preure/high temperature alarm-High Temperature / Leakage / Low Battery Alarm-Intelligent Shock Boot when car moving, dont need to turn on/off-Wirele connect by sensors, easy install-Build-in sensors and external sensors options, meets all your need-Fit on almost 98% cars on market Main Feature 1. Wirele transmiion2. 4 Tire Digital Display At Same Time3. High precision4. Solar Charging / USB Charging5. Brand New Upgrade Clip6. Tire Preure Alarm Warning7. Tire High temperature warning Solar & USB Charging Risk Warning If abnormal tire preure and temperature are detected, the system will iue a real-time warning sound and light up the flashing icons on the screen to deal with problems in time to avoid traffic accidents. Adapt to various environment The waterproof grade of the sensor is IP67, and it can be used at high and low temperature Flexible installation You can install it on the windshield, or you can install it in the control center The Receiver Angle can be Adjustable Applicable to 98% of the models on the market Two kinds of sensor External sensor Specification( Optional ) - Working preure: 0 - 81 psi / 0 - 5.6 bar- Preure accuracy: +/- 1.5 psi- Operating frequency: 433.92MHz- Working voltage: 2.0 - 3.6V- Waterproof: IP67- Working temperature: minus 40 - plus 85 Deg.C- Storage temperature: minus 40 - plus 125 Deg.C- Battery: built-in CR1632 120mAh button cell- Battery life: 1-2 years (can replace battery) Internal sensor Specification( Optional ) - Working preure: 0 - 81 psi / 0 - 5.6 bar- Preure accuracy: plus or minus 1.5 psi- Transmiion frequency: 433.92MHz- Working temperature: minus 20 - plus 85 Deg.C- Storage temperature: minus 40 - plus 125 Deg.C- Working voltage: 2.0 - 3.6V- Waterproof grade: IP67- Battery: built-in CR2450 button cell- Battery life: 2 - 5 year Two sensor options, you can choose which one is more suitable for your car Digital Display 1. Tire Preure2. Solar Power3. Battery Life4. Tire Temperature TPMS Receiver Specification - Battery: built-in 400mAh Li-ion battery- Operating voltage: DC 5V- RF transmiion frequency: 433.92MHz- Preure unit: psi/bar- Temperature unit: Deg.C / Deg.F- Operating temperature: minus 20 - plus 85 Deg.C- Storage temperature: minus 40 - plus 125 Deg.C TPMS Car Auto Wirele Tire Preure Monitoring System Solar USB Charging Power Digital Alarm TPMS Sensor External Internal