Kestrel 5400 Heat Stress Tracker Pro

Kestrel 5400 Heat Stress Tracker Pro


The Kestrel 5400 Heat Stress Tracker Pro detects when heat-relayed conditions are unsafe well before your body does.


  • Rugged (Drop Tested To MIL-STD-810G Standards), Waterproof (Sealed to IP67 Standards), and Floats
  • Optional Link Connectivity Powered By Bluetooth Smart Provides Wireless Communication To Mobile Devices And Computers
  • Handheld, Portable, Data Logger With Customizable Warning Flag Settings, Graphing, And Mobile Devices And Computers
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Why Buy From Fondriest?



  • Measures Web Bulb Globe Temperature (WBGT), Thermal Work Limit (TWL), heat index, temperature, humidity and much more - 15 measurements in all
  • Waterless! Natural Wet Bulb Temperature accurately calculated from on-board digital sensors with no tedious setup or maintenance
  • Large, hi-res, hi-contrast, graphic display is perfectly readable in the brightest sunlight and is backlit for use in low-light conditions

The next generation of WBGT and environment monitoring is the here with the
Kestrel 5400 Weather Meter.

The Kestrel 5400 provides the same trusted accuracy, reliability, and usability as the original Kestrel 4400 and 4600. The Kestrel 5400 is a handheld, portable, WBGT (Wet Bulb Globe Temperature) measurement tool and environmental data logger. No need for distilled water, bulky globes, complicated setup or expensive equipment. Getting accurate measurements couldn't be easier: just hold the Kestrel Heat Stress Tracker in the area of interest for both instantaneous and average WBGT measurements. Set the appropriate WBGT thresholds for flag warnings and the loud buzzer, bright LED beacon and on-screen warnings provide instant notification of dangerous conditions. Plus the Kestrel 5400 comes with commonly used heat safety guidelines on a handy, waterproof chart.

Unlike other WBGT meters on the market, the Kestrel 5400 is a full-featured weather meter as well. Measure wind speed, maximum wind gusts, temperature, humidity, pressure, wind chill, density altitude and more. No matter what your activity, the Kestrel 5400 provides insight into the critical conditions affecting safety, performance and success. The Kestrel 5400 with LiNK wireless data communication adds a compass for tracking wind direction as well, expanding its usability to include HAZMAT response, and even measuring headwind at the running track!

The Kestrel 5 Series platform adds many new features and options. If you're familiar with the Kestrel 4400 or 4600, the first thing you'll notice is the larger, higher-resolution and contrast display and improved font readability. The Kestrel 5 series also includes a built-in dual color backlight, extra-strong polycarbonate lens and AA battery operation and offers optional LiNK iOS and Android wireless connectivity and app support. Like all Kestrel meters, the Kestrel 5400 is drop-proof, dust-proof, waterproof and able to withstand harsh environments without damage - so it can be used anywhere needed to keep athletes, workers, military personnel and animals safe from heat injury. A range of carry pouch options makes it even easier to take your Kestrel meter with you.

Pair the Kestrel 5400 with the optional Kestrel Vane Mount for hands-free measurements over the course of the practice, training session or workday. And for maximum functionality, choose the Kestrel 5400 with LiNK to transmit live measurements to your phone or tablet when you're within range. The Kestrel LiNK app will also display alerts on your mobile device to let you know when conditions have become dangerous.

In addition to measuring the current environmental conditions, the Kestrel 5400 tracks and logs over 10,000 sets of time-stamped data. Your data log can be transferred to a mobile device wirelessly with the LiNK wireless communication option and Kestrel LiNK app, or to a PC/MAC with either the accessory Kestrel LiNK Dongle or waterproof USB Data Transfer Cable (available separately).

Kestrel LiNK for mobile
Android and iOS apps put crucial information at your fingertips with real-time remote data viewing on phones and tablets up to 100' away. Kestrel LiNK also provides easy data export, threshold alerts and simple firmware updates.

LiNK wireless connectivity powered by Bluetooth Smart
Robust, easy connectivity to both iOS and Android mobile devices as well as Windows and Mac computers. (Computers require optional Kestrel USB Dongle.)

LiNK wireless connectivity powered by Bluetooth Smart
Robust, easy connectivity to both iOS and Android mobile devices as well as Windows and Mac computers. (Computers require optional Kestrel USB Dongle.)

USB Data Transfer Cable
Low profile, lightweight, waterproof cable provides wired connectivity to Windows and Mac computers for fast data uploads and firmware updates. Compatible with every model in the Kestrel 5 Series.

Sleek, rugged tripod vane mount
Small, secure, robust vane mount turns any Kestrel 5 Series meter into a portable weather station that remains oriented into the wind. (Included in
some models where noted, otherwise sold as optional accessory.)

Large, high contrast screen
Easily readable text in almost any setting, including bright sunlight, with more visible information on the screen at all times. This high-resolution display is easy on the eyes, allowing you to get more information from customizable user screens, charting and graphing options without causing eye strain or fatigue.

Dual color backlight
Toggle backlight color between standard white and night-vision-preserving red (NV). The red NV backlight features an optical wavelength selected to help users sustain natural night vision and reduced brightness to avoid detection during night maneuvers.

Secure battery door
Large, O-ring sealed door provides easy, tool-free battery access

Scratch and breakage-resistant window
Battery is isolated from electronics, reducing damage in the event of a battery leak. (Note - Lithium AA batteries strongly recommended to avoid battery leakage altogether.)

Intuitive user-interface
Icon-based navigation, intuitive keypad, and multiple languages make the Kestrel a breeze to use.


  • Altitude
  • Barometric Pressure
  • Density Altitude
  • Dew Point Temperature
  • Globe Temperature
  • Heat Stress Index
  • Naturally Aspirated Wet Bulb Temperature
  • Relative Humidity
  • Station Pressure (Absolute Pressure)
  • Temperature
  • Thermal Work Limit (TWL)
  • Wet Bulb Temperature (Psychrometric)
  • Wet Bulb Globe Temperature (WBGT)
  • Wind Chill
  • Wind Speed

Works with Compatible Apps:

  • Kestrel LiNK for Windows & Mac
  • Simple communication to Windows and Mac computers is provided through the optional LiNK USB Dongle or USB Data Transfer Cable
  • Download your data to view, analyze and archive
  • Enables firmware update of Kestrel 5 Series meters


  • Neck Lanyard
  • AA Lithium Battery (Average Life 400 Hours)
  • Protective Drawstring Pouch
  • Certificate of Conformity (with complete specifications)
  • Instruction Manual
  • 5-Year Warranty
Image Part # Product Description Price Stock Order
Kestrel 5400 Heat Stress Tracker Pro 0854LVCTAN Heat Stress Tracker Pro with Link, Compass, and Vane Mount, Desert Tan
In Stock
Kestrel 5400 Heat Stress Tracker Pro w/Link,Compass + Vane Mount - Safety Orange 0854LVCORA Heat Stress Tracker Pro with Link, Compass, and Vane Mount, Safety Orange
In Stock
Image Part # Product Description Price Stock Order
Kestrel Screen Protector Kit For 5000 Series 0784 Screen Protector Kit For 5000 Series
In Stock
Kestrel Tripod Clamp 0793 Tripod clamp
In Stock
Kestrel Replacement Impeller 0801 Replacement impeller
In Stock
Kestrel 4000 NiteIze Belt Clip Case 0805 NiteIze carrying case
Usually ships in 1-2 weeks
Kestrel Portable Mini Tripod 0799 Portable mini tripod with bag
In Stock
Kestrel Link Dongle 0786 Link Dongle for 5000 Series
In Stock
Kestrel Tactical MOLLE-Compatible Cases 0806CAM Tactical case, camouflage (MOLLE-compatible)
Usually ships in 1-2 weeks
Kestrel Tactical MOLLE-Compatible Cases 0806OLV Tactical case, olive green (MOLLE-compatible)
In Stock
Kestrel Tactical MOLLE-Compatible Cases 0806BLK Tactical case, black (MOLLE-compatible)
In Stock
Kestrel Tactical MOLLE-Compatible Cases 0806TAN Tactical case, brown (MOLLE-compatible)
In Stock
Kestrel Rotating Vane Mount And Carry Case 0782 Rotating Vane Mount And Carry Case, for 5000 Series, Black
In Stock
Kestrel USB Data Transfer Cable 0785 USB Data Transfer Cable, for 5000 Series, Black
In Stock
Kestrel Collapsible Tripod 0792 Collapsible tripod
Usually ships in 1-2 weeks

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