One professional tool does it all! Check tire temps with the JOES adjustable probe and check track temps with the built in laser guided IR sensor. Use the tire adapter and humidity function to check your tires for excessive moisture. Record the outside temperature, relative humidity percent, dew point and wet bulb for optimal engine tuning. Weather has an effect on your set ups and the JOES system gives you information you need to store in your chassis set up book allowing you to repeat those winning set ups. One professional tool records your most important data and the USB cable and software are included for quick downloading to your computer.