Features： Solar Power&USB Charging: The intelligent wireless system with 2 charging ways which ensure the tire pressure monitoring system will work continuously, rechargeable lithium battery to get electricity can increase the tires life. Solar and USB charging bid farewell to traditional wiring.  Suitable for 4-6 tires: Real-time monitoring the temperature and pressure with high degree accuracy for 4-6 tires simultaneously and can automatically change the corresponding data, LCD display mode ensure the high resolution ratio and guarantee the high-definition and no splash screen condition.  Precise Sensor Connection: The TPMS adopts USA imports chip design for better and more stable and accurate signal transmission. Light weight design for sensor for easy installation. Support tire position exchange function. IP5K4K Sensor waterproof grade can avoid various harsh climate. ( Optional purchase repeater which is suitable for strengthening the signal when the distance exceeds 6 meters and the signal is weakened to ensure the reliability of the received signal.).  Balance Tire Pressure: The system supports fuel-saving, air leakage forseeing and tire wearout reducing and balance tire pressure which will ensure safety driving. Equipped with RF wireless technology can auto-alarm when tire pressure and temperature is abnormal. With two pressure unit "PSI,BAR " and two temperature unit "℃,℉" for option. Please unscrew the sensor to match again or start the car for meters when one of the sensors’ values can’t be shown up at the first time.   Specifications： Color：Black;  Material：Plastic;  Displayer Parameter ： Working Temperature:(-20℃-70℃);  Voltage:3.7V;  Transmitting Frequency:433.92MHz±20MHz;  Weight:95g;   Sensor Parameter ： Working Temperature:(-40℃-120℃);  Pressure Range:0-3.5bar;  Voltage: 2.0-3.6V;  Transmitting Frequency:433.92MHz±20MHz;  Battery Life:2 years;  Weight:9.5g;   Package List： 1 * Set