Know Your Conditions - Measure environmental conditions quickly and accurately. Forecast weather with pressure trend indicator.

All instruments and accessories are completely assembled in the USA.

Innovative humidity sensor designed for stability and accuracy in abrupt condition changes. Thermally adjusted humidity sensor. Patented user-replaceable impeller. Quick response, external thermistor. High precision pressure sensor.

Kestrel 3500 Weather Station Measures:

• Barometric pressure
• Pressure trend
• Altitude
• Relative humidity
• Heat stress index
• Dewpoint
• Wet bulb temperature
• Wind chill
• Air, water, snow temperature
• Current wind speed
• Average wind speed
• Maximun wind gust

Kestrel 3500 Weather Tracker Features:

• Real-time clock
• Waterproof and floats
• Large easy-to-read display with backlight
• Data hold function
• High precision pressure sensor
• Quick response, exteranl thermistor
• Forecast weather with pressure trend indicator
• Humidity sensor can be recalibrated in the field with a Relative Humidity Calibration Kit (Sold Separately Item # NK0802)
• Innovative, thermally adjusted humidity sensor designed for stability and accuracy in abrupt condition changes
• Patented user-replaceable impeller
• Protective cover with sure-grip overmolding
• All instruments and accessories are completely assembled in the USA 

Kestrel 3500 Wind Speed Meter Specifications:
Wind Speed
(sample every 1 second)
0.4 to 60 m/s (0.1 resolution, 3% accuracy)
59 to 11,948 ft/min (1 resolution, 3% accuracy)
1 to 218 km/h (0.1 resolution, 3% accuracy)
0.8 to 135 mph (1 resolution, 3% accuracy)
0.6 to 118.3 kt (0.1 resolution, 3% accuracy)
0 to 12 Beaufort (0.1 resolution, 3% accuracy)

Air Flow
(sample every 1 second)
0 to 99,999 cfm (1 resolution, 3% accuracy)
0 to 99,999 m3/h (1 resolution, 3% accuracy)
0 to 99,999 m3/m (1 resolution, 3% accuracy)
0.0 to 9,999.9 m3/s (0.1 resolution, 3% accuracy)
0 to 99,999 L/s (1 resolution, 3% accuracy)

Temperature
(sample every 1 second)
-20.0 to 158.0 F (0.1 resolution, 1.8 F accuracy)
-29.0 to 70.0 C ( 0.1 resolution, 1.0 C accuracy)

Relative Humidity
(sample every 1 minute)
0.0 to 100.0 % (0.1 resolution, 3.0 %RH accuracy

Wind Chill
(sample every 1 second)
-49.0 to 257.0 F (0.1 resolution, 1.8 F accuracy)
-45.0 to 125.0 C (0.1 resolution, 1.0 C accuracy)

Heat Index
(sample every 1 minute)
0.0 to 100.0 %RH, -49.0 to 257.0 F (0.1 resolution, 3.6 F accuracy)
-0.0 to 100.0 %RH, -45.0 to 125.0 C (0.1 resolution, 2.0 C accuracy)

Dew Point
(sample every 1 minute)
0.0 to 100.0 %RH, -49.0 to 257.0 F (0.1 resolution, 3.6 F accuracy)
0.0 to 100.0 %RH, -45.0 to 125.0 C (0.1 resolution, 2.0 C accuracy)

Power requirements:
2 AAA Alkaline batteries (included).
Battery life: +/- 300 hours, depending on backlight use.

Dimensions:
5.0" x 1.8" x 1.1".
Case: 4.8" x 1.9" x 1.1".
Includes:
A slip-on protective cover
Neck lanyard
CR2032 coin cell battery (Average life 300 hours).