The Kestrel 4000 Pocket Weather Tracker is the next generation of weather monitoring. You can now measure EVERY major environmental condition, easily and accurately, right in the palm of your hand. The chart mode allows users to recall and graph up to 250 measurements, along with the date and time of storage. Barometric Pressure, Altitude, Density Altitude, Temperature, Humidity, Wind Speed, Wind Chill, Dew Point, Wet Bulb, and Heat Index... all in one pocket sized instrument.

Graph and recall trends Easy to read, backlit display Time and date Customize screens to display user-selected measurements Hard cover allows use of other functions while protecting the impeller Automatically store measurements, even when the unit is turned off Manually store measurements with the press of a button Chart up to 250 measurements Impeller can be replaced without tools Exterior temperature, humidity, and pressure sensors for fast and accurate readings Humidity sensor can be recalibrated in the field with our Relative Humidity Calibration Kit Includes neck and wrist lanyards, protective pouch and 2 AAA batteries Waterproof and floats Full 1-year warranty Assembled in the USA

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The new Kestrel Interface is the ideal companion to the Kestrel 4000 Pocket Weather Tracker. With this optional computer interface, data can be uploaded for long-term storage, in-depth analysis and detailed charting. Simply connect the interface cable to the serial port on your Windows PC, rest the Kestrel 4000 in the cradle, and upload your stored data. The included software is easy to use and saves the data in a comma delimited text file for use in your choice of applications: text editor, spreadsheet or database.