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The Kestrel 3500 NV measures every environmental condition with the simple press of a button! The Kestrel NV units are olive drab with a visible red backlight, which helps sustain the user's natural night vision. Military personnel and pilots flying in darkness are often concerend with preserving their night vision. It takes 30 to 45 minutes for the average eye to adapt to darkness and maximize night vision. Even a short burst of white, yellow, green or blue light ?bleaches out? the rod cell photoreceptors in the eye and causes night blindness until the entire adaptation process can take place again. Light in the red spectrum does not cause this ?bleaching out?, preventing night blindness and night vision fatigue. The units' red backlight is also much dimmer than a standard backlight, making it more difficult to detect with the naked eye in night operations.

The 3500NV scrolls through the current reading of 9 different environmental conditions, and is a great option for someone who needs the ability to measure a wide variety of environmental conditions, The Kestrel 3500NVcomes in a shock-resistant green case, and runs on a user-replaceable battery with a 400-hour average lifespan. We back every Kestrel product that we sell with our 100% money back guarantee. If you have any questions please call us TOLL FREE (866)688-6912. 

Measures:
- Current wind speed
- Maximum wind gust
- Average wind speed
- Air, water & snow temperature
- Wind chill
- Dewpoint
- Heat stress index
- Barometric pressure
- Altitude
- Wet bulb temperature

Know Your Conditions:
- Measure environmental conditions quickly and accurately
- Wide range of wind speeds and low startup speed
- Reliable, portable and easy to use

Quality by Design:
- All instruments and accessories are completely assembled in the USA
- Patented user-replaceable impeller
- Innovative design for stability and accuracy in abrupt condition changes
- Quick response, external thermistor
- Thermally adjusted humidity sensor
- Ultralight impeller is mounted in jewel bearings for precision and startup speed
- Impeller is shock-mounted in a glass-reinforced plastic housing

Features:
- Real time clock
- Protective cover with sure-grip overmolding
- Accurate and fast response temperature sensor
- Innovate humidity sensor designed for stability and accuracy in abrupt condition changes
- Two sealed, user-friendly rubber buttons control all functions
- Data hold function
- Large easy-to-read display with RED BACKLIGHT
- Fiberglass casing is waterproof and floats
- Lanyard and battery included
- Actual size: 4.8" x 1.7" x 0.6 " (size w/out case)
- Two-year warranty

Please allow 7-10 business days for delivery