The Touch Screen Buttons Solar power charging, don' need to charge by connecting car lighter Colorful LCD Digital displaying, clear to show tire information Rear-time monitoring pressure and temperature of 4 tires Low air pressure or high temperature High Temperature or Leakage or Low Battery Alarm Intelligent Shock Boot when car moving, don' need to turn on or off Wireless connect by sensors, easy install External Sensor: Easy to install, convenient to replace Dust-Proof or Water-Proof or Anti-theft Anti High Temperate and Cold IP67 Protection or Waterproof Air pressure setting range: 0.1-8.0 BAR Temperature setting range: 60-80 Operating temperature: -20-125 Storage temperature: -30-85 Charging voltage: DC 5V Frequency: 433.92MHz20.00MHZ Colour:Black Material:ABS Package Contents: 4 x Car External Tire Pressure Sensors 1 x Display 1Set x Installation accessories 1 x Wire harness 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.