
Kestrel 4000 Measures
• Barometric pressure
• Pressure trend
• Altitude
• Relative humidity
• Heat stress index
• Dewpoint
• Wet bulb temperature
• Density altitude
• Wind chill
• Air, water, and snow temperature
• Current wind speed
• Average wind speed
• Maximum wind gust
Kestrel 4000 Features
• Waterproof and floats
• Easy to read, backlit display
• Time and date
• 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.
• Minimum, maximum, and average values
• Automatically store measurements, even when the unit is turned off
• Manually store measurements with the press of a button
• Customizable data storage - 4000 data points
• Graph and recall trends
• Customize screens to display user-selected measurements
• Data charting
• Data upload (with optional interface)
• Five languages (English, French, Spanish, German, and Italian)
• User-replaceable impeller
• Flip-top impeller cover allows use of other functions while protecting the impeller
• US Patent Nos. 5,783,753 and 5,939,645 and 6,257,074
• All instruments and accessories are completely assembled in the USA
• 5-year warranty
Kestrel 4000 Includes
• Soft carry pouch
• Neck lanyard
• Batteries - 2 AAA
• Kestrel Certificate of Conformity