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  • Kestrel 4500NV Weather & Environmental Meter w/Compass with NV Backlight
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Kestrel 4500 Weather & Environmental Meter w/Compass

by Kestrel
75 customer reviews

List Price: $419.00
Price: $308.98 & FREE Shipping. Details
You Save: $110.02 (26%)
Only 14 left in stock (more on the way).
Ships from and sold by Amazon.com. Gift-wrap available.
Desert Tan
With NV Backlight
  • Rugged weather tracker for military personnel, HAZMAT first responders and other professionals who need to accurately monitor and log environmental measurements, with Night Vision back lighting
  • Measures and records wind direction, headwind/tailwind, crosswind, wind speeds, temperature, heat stress index, relative humidity, dew point temperature, wet bulb temperature, wind chill, barometric pressure and trend, altitude, density altitude
  • Get all the data you need to know your conditions, shift strategies and ensure safety all while recording a downloadable data log. (2900 data-point memory); Add a vane mount and tripod for a complete weather station
  • Protective flip-open impeller cover, replaceable impeller, large backlit LCD, waterproof, drop tested, accurate NIST-Traceable measurements, Bluetooth wireless data transfer and Night Vision Preserving (NV) Backlight optional
  • 4.8 x 1.9 x 1.1 in., 3.6 oz., includes replaceable CR2032 coin cell battery, lanyard; Made in USA and backed by a 5-year warranty
51 new from $300.78
$308.98 & FREE Shipping. Details Only 14 left in stock (more on the way). Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

Kestrel 4500NV Weather & Environmental Meter w/Compass with NV Backlight + Kestrel Belt Carry Case, Kestrel 4000 Series
Price for both: $325.46

Buy the selected items together

WARNING:
CHOKING HAZARD -- Small parts. Not for children under 3 yrs.

Technical Details


Product Description

Kestrel Meter 4500 Weather Meter The Kestrel 4500 Pocket Weather Tracker is Kestrel's flagship meter. Capable of monitoring and reporting an exhaustive list of environmental parameters - from temperature to barometric pressure, dewpoint, wind chill, and more**, the Kestrel 4500 is the most feature-rich pocket weather meter in the entire Kestrel catalog. And now, the Kestrel 4500, as well as the entire Kestrel 4000 series, is available with Bluetooth Technology, allowing you to communicate wirelessly and transmit and log your data automatically. In addition to the Kestrel 4000's extensive list of capabilities, the Kestrel 4500 has these distinct monitoring functions: Digital Compass Wind Direction Crosswind Headwind / Tailwind These added features make the 4500 the Kestrel Meter of choice for military professionals, HAZMAT teams, and flight crews. Like all the pocket weather meters in the Kestrel 4000 series, the Kestrel 4500 is capable of storing and charting up to 1400 data points for later analysis. If you select the Bluetooth model, your meter includes custom communication software designed to quickly and easily configure your data transmission frequency, download logged data, graph data and transfer data to other applications. It is not longer to purchase an interface separately, the new Kestrel Meters with Bluetooth include the software necessary to communicate wirelessly at a range of up to 30-feet. For military professionals, the Olive Drab NV version of the Kestrel 4500 features a night-vision preserving backlight. Backlight incorporates optical filter to reduce overall brightness and minimize blue and green spectrum light to preserve night vision. (Note: This backlight appears soft greyish pink, not "red", and is still in the visible spectrum, so is not compatible with night-vision equipment.) The NV light is designed for optimal performance in low-lig

Product Details

  • Item Weight: 1 pounds
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B00XJ97LOW
  • Item model number: 0845YEL-P
  • Average Customer Review: 4.7 out of 5 stars  See all reviews (75 customer reviews)
  • Amazon Best Sellers Rank: #19,899 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
  • Product Warranty: For warranty information about this product, please click here

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Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

42 of 42 people found the following review helpful By HMMWV VINE VOICE on December 10, 2008
Style Name: Standard ModelColor: Yellow Verified Purchase
Kestrel's patents on a low cost precision istrument have been expanded with the model 4500. Our troops oveseas have come to rely on the accurate data from the kestrel to indicate signs of dehydration, wind, dew point, condensation, all of which it measures with grace.

I bought my first 2 Kestrel 4000 units and I must caution that with excessive use (battery changing) they eventually broke the battery door on both units. I'm subtracting one star from an otherwise perfect product because Kestrel has chosen not to incorporate a green rechargable option yet and still uses AAA alkaline or lithium cells - HOWEVER -

In the earlier models (4000) if you wanted a graph over time you had to leave the unit turned on CONSTANTLY - batteries were dead in 3 days, which wasn't bad for a 2xAAA alkaline system. With the 4500 you leave the unit turned off and give it a wakeup period (say every 30 minutes) when it takes measurements of every weather reading and stores them in memory then powers off right away. My first 2 aaa batteries have been in the unit since I got it and are at 87% full so no more "always on" usage - a big fix.

The case is hermetically sealed to prevent moisture from entering the electronics. The data output is infrared allowing you to download the long term data sets.

Additionally, the 4500 has a compass and optional mounting bracket so you can track wind direction and crosswind.

Kestrel makes 2 versions of the 4500 - Mine is the bright yellow with a neon blue backlight. For military purposes they make an olive drab green case with a subdued red backlight that does not interfere with night vision equipment.

All data (humidity, dewpoint, heat index and a ton more) are graphed based on the time index you specify in setup.
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55 of 58 people found the following review helpful By HMMWV VINE VOICE on September 15, 2009
Style Name: With NV BacklightColor: Desert Tan
The Kestrel 4500/4500NV is a pocket sized weather station weighing in at a mere 102 grams with NIST tracable accuracy, trend recording data for plots of barometric pressure over time (in days) or windspeed (in minutes), and numerous calculations of wind chill, heat index, and many more. Its compass is one of the most accurate electronic compasses I have used (and I use garmin's frequently) with a reading to the nearest degree that is repeatable. Using just 2 AAA batteries and an included brace to prevent them from rattling causing compass errors, it provides 400 hours of active usage or months of weather trend logging.

Basically the older 4000 unit had a few bugs, mostly with the extreme case sealing to make the unit watertight so it could be left outside overnigt or dunked in the water. While you could buy the 4000 in grey or orange and get the same electronics, the olive drab 4500NV is substantially different than the 4500 yellow model. The NV stands for night vision and uses a backlight scheme that is compatible with Gen 3 NV goggles. While both units are identical during the day, at night the 4500NV has a dimly backlit display while the 4500 yellow case has a bright green backlight along the lines of the timex indiglo (TM) design. If you are using night vision goggles, the 4500NV is the proper version, however many people have complained that without NV goggles the backlight is not sufficient on the 4500NV compared to the 4500. Unfortunately the case color and backlight go together and you can not swap either. While the 4500NV is not invisible to the naked eye, it is sure dim compared side by side with the 4500. To sum it up, the 4500NV can be used on a dark night if your eyes have adapted.
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25 of 26 people found the following review helpful By HMMWV VINE VOICE on December 26, 2008
Style Name: With NV BacklightColor: Olive Drab
During the Iraqi and Afghanistan campaigns, soldiers needed to know fairly precise windspeed for artillery and marksmanship purposes. In fact, some rifle scopes today expect the user to own a kestrel wind speed meter and need the data from the meter to compute the scope adustment.

Kestrel worked with the US DOD to make the 4500NV (after all the 4000 was hunter orange) - in fact they worked so hard that the backlight on the 4500NV (NV stands for Night Vision) is so dim that it is not as useful as the standard 4500 (bright yellow case) which has a nightlight like a timex indiglo watch (too much for our Gen 3 NV systems).

The download data function *IS* very slow - the reason is that the case is weather sealed and the data is sent and received using infrared diodes on the back of the case. Back in the days prior to usb, these went to a 2400 - 9600 baud serial line, and they were fine. The USB version of the data adapter maintains the clock rates of the old serial standard to be compatible.

The biggest win for the user is that on the 4000 you had to leave it turned on all the time if you wanted a graph of weather readings every XX minutes to predict the weather. It did a great job graphing, but also drained the battery, and there was no way to tell the 4000 to wake up every 30 minutes, take a reading, and go back to sleep. The 4500 series does this so now you get accurate weather without wasting batteries. In fact, 2 batteries which lasted 3 days on the 4000 can last 3 months on the 4500 due to this one simple improvement.

Other military uses of the Kestrel are the Heat Index function which is used to ensure troops do not become dehydrated and to assess the risk of heat stroke in the summer sands of iraq.
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Kestrel 4500NV Weather & Environmental Meter w/Compass with NV Backlight
This item: Kestrel 4500NV Weather & Environmental Meter w/Compass with NV Backlight
Price: $308.98
Ships from and sold by Amazon.com