CHOKING HAZARD -- Small parts. Not for children under 3 yrs.
Kestrel 4500 Weather & Environmental Meter w/Compass
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- Handheld portable weather station w/ onboard data logging, digital compass and graphing
- Senses wind speed, temperature, humidity and pressure and displays up to 16 total measurements on large, clear LCD. Options include case color, Bluetooth® wireless data transfer and standard or red night vision preserving backlight
- Waterproof (IP-67), floats, drop-tested to military standards (MIL-STD-810G), patented
- Includes soft pouch, neck lanyard, 2 Energizer° Ultimate Lithium AAA batteries and 5-year warranty
- Used in firefighting, hazardous materials response, meteorology, military, law enforcement, research, education, scientific expeditions and more
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|Package Height||1.7 x 3 x 5 inches|
|Shipping Weight||0.3 pounds|
Top Customer Reviews
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.Read more ›
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.Read more ›
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.Read more ›
Most Recent Customer Reviews
Awesome device. Worked for me easily out of the box. Fits good in my hand and doesn't take up room in my bag making it hard to carry aroundPublished 21 days ago by Amazon Customer
The only downside to this weather meter: it's SUPER sensitive to temperature, meaning that if you are even holding it in your hand, the temp will rise. Read morePublished 1 month ago by sparks
Received it on this Friday (4/8/16) all seemed good, put the batteries in, started going through the settings getting acquainted with the system and then noticed a scratch on the... Read morePublished 4 months ago by Rick
The best weather station you can get for long range shooting. The Bluetooth function is key with a ballistics calculator on a device.Published 9 months ago by Rail Fan
Kestrel is the best you can buy. I use for long range shooting and works great. Kestrel has helpful videos to help with setting up and using it.Published 10 months ago by John V. Phan
Very easy to use but has some challenges; I had difficultly connecting to my iPhone using Bluetooth so I contacted Kestrel technical support only to learn this model DOES NOT... Read morePublished 11 months ago by SNBBOZ
Great unit, have not got to use all features yet but have compared accuracy with a belt weather kit and it's right on point.Published 11 months ago by Clay Stigall