Kestrel 5400AG Cattle Heat Stress Tracker in hand
Kestrel 5400AG Cattle Heat Stress Tracker with LiNK + Vane Mount + Large Tripod in use
Kestrel 5400AG Cattle Heat Stress Tracker with LiNK + Vane Mount + Large Tripod
Kestrel 5400AG Cattle Heat Stress Tracker with LiNK + Vane Mount + Large Tripod
Kestrel 5400AG Cattle Heat Stress Tracker with LiNK front view

Kestrel 5400AG Cattle Heat Stress Tracker with LiNK + Vane Mount + Large Tripod

Regular price Sale(excluding VAT @ 20%)

PLEASE NOTE: Orders from EU customers may be liable for import duty/tax. Please refer to our Terms & Conditions.

The Kestrel 5400 Cattle Heat Stress Tracker offers micro-climate measurement and monitoring at the field, barn and cow house locations.

The unit contains a built-in Globe Temperature sensor and complete cattle-specific calculations. You simply input your herd and enclosure parameters to measure Temperature Humidity Index (THI) and Heat Load Index (HLI) and monitor Accumulated Heat Load Units (AHLU). The Kestrel 5400 Cattle Heat Stress Tracker is designed to help you measure and manage your herd’s heat stress, ensuring you maximise your profits.

The Kestrel 5400AG also calculates and logs over 10,000 sets of time-stamped data.

The Kestrel 5400AG has Bluetooth connectivity allowing you to transfer data wirelessly to an iOS (iPhone, iPad) device or Android smartphone or tablet when within range using the appropriate Kestrel LiNK App. You can also transfer data wirelessly to a Windows or Mac computer using the optional Kestrel Bluetooth USB Dongle (sold separately). Data can be viewed live on the App up to 100 feet away (line of sight).

When combined with the Kestrel Vane Mount and Kestrel Tripod the Kestrel 5400AG becomes a stand-alone environmental monitoring station as the large wind vane and precision pivot keep the Kestrel oriented into the wind for continuous measurement and logging of all the key environmental parameters at the exact location required.

Mil-SPEC-810G drop tested with an IP67 waterproof rating the Kestrel 5400AG is designed and constructed to withstand the harsh treatment it will receive in the agricultural industry. The unit comes with a five-year warranty and certificate of conformity as standard.


  • Accumulated Heat Load Units (AHLU)
  • Heat Load Index (HLI)
  • Temperature-Humidity Index (THI)
  • Delta T
  • Globe Temperature
  • Heat Stress Index
  • Naturally Aspirated Wet Bulb Temperature
  • Dew Point Temperature
  • Relative Humidity
  • Wind Speed
  • Wind Direction (Cardinal Points, Degrees)
  • Crosswind, Headwind & Tailwind
  • Temperature / Wind Chill (Fahrenheit &Celsius)
  • Station Pressure (Absolute Pressure)
  • Barometric Pressure (inHg & hPa (mb))
  • Altitude (Barometric)
  • Density altitude
  • Wet Bulb Temperature (Psychrometric)
  • Wet Bulb Globe Temperature (WBGT)


  • Large easily read high resolution, high contrast display with backlight
  • Time & Date
  • Customize screens to display user-selected measurements
  • Graph & recall trends
  • Min, Max & Average values
  • Automatically store measurements, when powered on or off
  • Manually store measurements with the press of a button
  • Customizable data storage - 10,000 data points
  • Data charting
  • Optional LiNK connectivity powered by Bluetooth® low energy provides wireless communication to mobile devices and computers.
  • Data upload to iOS & Android phones & tablets
  • Data upload to Windows & Mac computers via wireless Bluetooth (LiNK Enabled Meters only with the optional Kestrel Dongle)
  • Standard user-replaceable AA Lithium Battery (Average Life 400 Hours)
  • Drop tested to MIL-STD-810G standards (10 drops from 4’)
  • Waterproof and dustproof (sealed to IP67 standards – 30’ submersion to 3’)
  • Certificate of Conformity
  • Neck Lanyard
  • Patented Impeller and Sensor Technology (user-replaceable)
  • Impeller cover allows use of other functions whilst protecting the impeller
  • Waterproof & Floats
  • Languages: English, French, Spanish, German & Italian
  • 5 Year Warranty