Crosswind 
Heading Wind Direction
Headwind/Tailwind Altitude Pressure Trend
Barometric Pressure Wet Bulb Temperature
Relative Humidity In % Heat Stress Index Dewpoint
Air, Water, & Snow Temperature Density Altitude Wind Chill
Current, Average, and Maximum Air Velocity
The Kestrel 4500 senses wind direction and wind speed by utilizing its built-in digital compass. It also calculates crosswind and headwind/tailwind with reference to a user-set target heading, and stores the information along with all the other environmental readings in its 1400 data point memory.
Pair the 4500 with the (NC-10912) Kestrel Vane Mount and you have a data-logging weather station that sets up in seconds and rotates in the slightest of breezes. The whole kit is the ultimate in portability. It packs down into a 2 x 6 inch pouch and weighs under eight ounces.
Features...
- Waterproof and floats.
- Time and date.
- Easy- to-read backlit display.
- Data Logger (automatic and manual).
- Customizable data storage - 1400 data points.
- Minimum, Maximum and Average values.
- Multi-Function 3-line display.
- Humidity sensor can be recalibrated in the field with the (NC-7792) Relative Humidity Calibration Kit..
- Exterior temperature, humidity, and pressure sensors for fast and accurate readings.
- Customize screens to display user-selected measurements.
- Graph and recall trends.
- User-replaceable impeller.
- Flip-top impeller cover allows use of other functions while protecting the impeller (hard cases available).
- Data charting.
- Upload to a computer (with optional interface).
- Five languages (English, French, Spanish, German, and Italian).
- US Patent Nos. 5,783,753 and 5,939,645 and 6,257,074.
- Five-Year warranty.
- Assembled in the USA.
Includes...
- A slip-on protective cover.
- Neck lanyard.
- CR2032 coin cell battery (Average life 300 hours).
- Kestrel Certificate of Conformity with Serial Number of unit, Date of Test, and operator's initials.