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Kestrel 5400AG Livestock Heat Stress Tracker with LiNK + Vane Mount

Original price $819.00 USD
Original price $819.00 USD - Original price $819.00 USD
Original price $819.00 USD
Current price $699.00 USD
$699.00 USD - $699.00 USD
Current price $699.00 USD

Free 2 Day Delivery in the USA. Ships within 24 hours. Ships Worldwide.

In stock


  • Wind Speed
  • Current Wind Speed
  • Average Wind Speed
  • Maximum Wind Gust
  • Temperature
  • Barometric Pressure
  • Delta-T
  • Density Altitude
  • Dew Point Temperature
  • Globe Temperature
  • Accumulated Heat Load Units (AHLU)
  • Heat Load Index (HLI)
  • Heat Stress Index
  • Naturally Aspirated Wet Bulb Temperature
  • Relative Humidity
  • Temperature-Humidity Index (THI)
  • WBGT (Wet Bulb Globe Temperature)
  • Wet Bulb Temperature (Psychrometric)
  • Wind Chill
  • Wind Direction
  • Pressure Trend
  • (1) AAA Lithium Battery
  • Instructions
  • Protective Draw String Pouch
  • Lanyard
  • Certificate Of Conformity (Spec Sheet)

5 year manufacturers warranty.

Shipping / Returns / Taxes:

All items ship for free in the USA. Spend $250 USD for free worldwide shipping! Shipping rates and services are available on the cart page. Estimated delivery dates will be displayed during checkout.

International orders may be subject to customs fees / taxes / duties and additional delivery fees prior to or at time of delivery. Please check with your country's customs office to determine if you are responsible for paying these fees.

State Sales Tax (USA): We collect sales tax on shipments to Pennsylvania customers only.

We offer a 45 day no-hassle return policy. Free returns are available in the USA only.

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Don’t let cattle heat stress reduce your herd performance and cost you money.

Implement an effective management plan based on objective and accurate THI, HLI and AHLU measurements at the pen level with Kestrel. Rugged hand-held meter can also be mounted with included hardware for longer term monitoring of heat events.

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

The Kestrel 5400 Cattle Heat Stress Tracker offers micro-climate measurement and monitoring at the pen or yard location. Contains a built-in Globe Temperature sensor and complete cattle-specific calculations. Measure THI and HLI and track AHLU based on easy-to-input herd and pen parameters. Perform spot checks or mount in place with the included vane mount accessory to track AHLU for months.  LiNK capability allows remote access to current and logged data from your iOS or Android mobile device. Mount a mobile data equipped tablet nearby to send mobile alerts even when you’re not on-site. Designed by Kestrel with input from some of the world’s most respected experts in cattle heat stress, the Kestrel 5400 Cattle Heat Stress Tracker is designed to help you MEASURE and MANAGE your herd’s heat stress, ensuring you MAXIMIZE your bottom line.


  • Heat Load Index (HLI), Temperature-Humidity Index (THI), Accumulated Heat Load Units (AHLU), Wet Bulb Globe Temperature (WBGT), heat index, Delta T, temperature, humidity and much more. 21 measurements in all!
  • Complete weather station capabilities with a comprehensive suite of weather measurements including wind speed, direction, pressure trend, temperature and humidity.
  • Durable, portable, and easy to use data logger with customizable category settings, graphing and measurement statistics.
  • Large, hi-res, hi-contrast, graphic display is perfectly readable in the brightest sunlight and is backlit for use in low-light conditions.
  • LiNK connectivity powered by Bluetooth LE® provides wireless communication to mobile devices and computers.
  • Rugged (drop tested to MIL-STD-810G standards), dust and waterproof (sealed to IP67 standards).
  • Included Kestrel Vane Mount easily attaches to fencing.
  • Protective pouch, neck lanyard and Lithium AA battery included.
  • 5-year warranty.

Kestrel 5400AG Specifications and Dimensions:


Ask a Question
  • Hi, i am interested in buying kestrel heat stress equipment. But i am not sure which model will be best useful for my research work. I want to use it for Heat stress measurements in Foundry industry (like workers exposed near to the furnace and other near by environment). So, can you please suggest me which model will be best suited to my work.

    Hi, The Kestrel 5400 is designed for both outdoors and indoors use. The Kestrel 5400 displays Wet Bulb Globe Temperarue ("WBGT") as well as thermal work limit (“TWL”), another recognized composite heat stress prediction tool. For both WBGT and TWL, the Kestrel 5400 provides on-screen and visual alarms when conditions enter the caution and danger zones, providing clear and immediate guidance that heat illness prevention steps must be taken. Clothing levels can also be customized, making the Kestrel 5400 particularly useful in activities requiring heavy protective gear which worsens heat stress. The Kestrel 5400 also logs oughly 10,000 data points which can be downloaded with either the Kestrel USB Data Transfer Cable or wirelessly (Kestrel 5400 PRO with Compass and Bluetooth LiNK only) using a smartphone and the free Kestrel LiNK app. I would recommend the 5400 as the other heat stress meters do not report WBGT and TWL. You can find the Kestrel 5400 here: Kestrel 5400 WBGT & TWL Heat Stress Meter