Solar Power TPMS Temperature Alert LCD Display Car Tire Pressure Alarm Monitor System With 4 Internal/External Sensor

Description:  Real time Monitor tire pressure can improve fuel efficiency, prolong tire life, increase traffic safety and monitor temperature.  Visual and sound warning.  LCD displays tire pressure and temperature.  Wireless connect by sensors, easy install.  Solar charging,don't need to connect car cig lighter to charge.  USB charging available,no worried when rainy day or night time.  Specifications:  Color: Black.  Sensor IP: IP67.  Display Units: Bar, Psi.  Size: as the pictures.  Material: Plastic, metal.  Working Frequency: 433.92MHz.  Sensor Working Temp.: -40~125 °C.  Receiver Working Temp.: -20 ~ 70°C.  Working Pressure: 0~51 Psi/0~ 3.5 Bar.  Receiver charging method: USB, Solar energy.  Working Voltage: Sensor 2.0-3.6V,Receiver 5V.  Sensor Battery: Built-in CR2050 button battery.  Receiver Battery: Built-in 400m Ah polymer lithium battery.  Tips:  The host (TPMS) must be turned on before installing the sensor (long press the left button for three seconds to turn on and o