1Easy to Read Data: Professional manufacturing, Lcd display, high volume alarm, various tire pressure units are optional, support tire position swap. 2Accurate Monitoring: The tire pressure monitoring system accurately monitors tire pressure and tire stability throughout the process to ensure driving safety. 34 External Sensors: Including 4pcs tire pressure monitoring sensors, the tire pressures and tire temperatures of 4 wheels can be displayed at the same time. 4High Efficiency Charging: Solar energy and USB charging modes ensure higher charging efficiency. The built in lithium battery, unimpeded battery life in cloudy days. 5Wide Application: Wireless tire pressure monitoring system has long receiving distance, stable signal, suitable for most cars, RVs, trucks and so on.