Same as the Kestrel 4000 but this unit has a night-vision preserving backlight which helps users to sustain natural night vision. The NV's backlight incorporates an optical filter to reduce overall brightness and minimize blue and green spectrum light to preserve night vision. Additionally, NV backlights are also much dimmer than a standard backlight, making it more difficult to detect with the naked eye in night operations. This backlight appears soft greyish pink, not red, and is still in the visible spectrum, so is not compatible with night-vision equipment.
Kestrel 4000NV 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 4000NV 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 , 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 - 2000 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, All instruments and accessories are completely assembled in the USA, 5-year warranty.
Kestrel 4000NV Includes: Soft carry pouch, Neck lanyard, Batteries - 2 AAA, Kestrel Certificate of Conformity.
Shipping Weight: 8 oz. (225g)