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Kestrel DROP D2HS Heat Stress Monitor

SKU family: 0720ORA
Know when heat and humidity are causing unsafe conditions!
Contact us directly at 610-447-1555 for Government pricing

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Kestrel DROP D2HS Heat Stress Monitor Overview

Know your temperature and humidity conditions anywhere with the small, rugged Kestrel DROP D2 Heat Stress Monitor.

The Kestrel DROP D2 data logger can be placed wherever needed to log temperature and humidity with the data logs retrieved wirelessly and automatically to the Kestrel LiNK app when within wireless range(up to 100’ or more line of sight).

  • The EASIEST way to monitor and track temperature, humidity, heat index and dew point in almost any environment – wet or dry, indoors or out
  • View data wirelessly via Bluetooth Smart on your iOS or Android phone or tablet with the free Kestrel LiNK app 
  • Store thousands of data points and get months of logging on a single coin-cell battery - customize logging rate, connections and alerts
  • See, save and share data from multiple DROPs with just one phone or tablet --
    • iOS 6 installed iPhone 4s, iPad 3rd generation or later
    • Android 4.3 and higher. Works with most Android devices with Bluetooth Smart®, including Samsung Galaxy, Nexus 4, Motorola Droid and other recent generation phones and tablets. 

Use a DROP Anywhere - Small, Accurate, Rugged and Waterproof

Each DROP measures just 1 x 1.8 x 2.4 inches (24 x 46 mm x 60 mm) and weighs just 1.2 ounces (34 grams).  DROP loggers meet military and international standards for water, dust and shock resistance (IP-67 and MIL-STD-810G) and are conveniently equipped with a sturdy d-ring for hanging wherever needed.

DROPs Are Powered by the Kestrel LiNK App



Kestrel LiNK is the free app that powers the DROP loggers. With Kestrel LiNK on your smart phone or tablet, you can view real-time readings from any DROP logger within wireless range (up to 100’ or more line of sight) via Bluetooth Low Energy.  Each phone or tablet can connect to up to 8 DROP loggers at the same time and store data logs from many more. Min/Max/Average readings are clearly displayed and the data log is viewable as a scrolling graph with detailed data for each logged point. The Kestrel LiNK app also allows adjustment of the logging interval and other settings as well as real-time threshold alerts. Readings can be updated as frequently as every 2 seconds and logging time and date are automatically updated whenever connected to your smart device. You can also send and share real-time and logged environmental data via email, Facebook or Twitter


  • iOS 6 installed iPhone 4s, iPad 3rd generation or iPod Touch 5th generation – or any later iOS or hardware configuration. Will not work on iPhone 4, 3GS on 3G or any earlier iPad or iPod generation.
  • Android 4.3 and higher. Works with most Android devices with Bluetooth Smart®, including Samsung Galaxy, Nexus 4, Motorola Droid and other recent generation phones and tablets. 


Model & SKUs:

  • Kestrel DROP D2 - Part # 0720ORA

American-Made Quality and a Five-Year Warranty

Every Kestrel environmental instrument is designed and built entirely in the USA. Kestrel’s history and focus on quality and ruggedness is reflected in the DROP’s industry-leading five-year warranty. Kestrel has been building rugged environmental instruments that help people do their jobs more safely and efficiently for more than fifteen years and has built a reputation for reliability one meter at a time.

What Industries Can Use the Kestrel DROP? 

Kestrel DROP Industry Icons 


DROP Customer Feedback:

The Kestrel DROP D2 and D3 are absolutely the best kept secret in the cigar industry! In the high tech world we live in, I am now able to keep a vigilant eye over my investment by remotely monitoring the environmentals of my humidor via a simple app on my iPhone. Having the ability to set alerts when humidity and temperature drop or go above ideal conditions is invaluable.  This is a MUST HAVE accessory for anyone with a humidor!


Which Kestrel DROP is right for me?


Where Can a Kestrel DROP Be Used?

  • Bedroom
  • Basement
  • Attic
  • Kennel
  • Barn
  • Hatchery
  • Greenhouse
  • Shipping Container
  • Airplane
  • Ship
  • Warehouse
  • Factory
  • Humidor
  • Safe
  • Refrigerator
  • Field
  • Winery
  • Forest
  • Laboratory
  • Classroom
  • Training Center
  • Kitchen
  • Silo
  • Shooting range
  • Construction site
  • HVAC System

Corporate Gifts & Branding Options


  • Dew Point
  • Heat Stress Index
  • Relative Humidity
  • Temperature


  • Bluetooth Smart (Wireless Technology)
  • Data Logger
  • Drop-Tested, MIL-STD-810G
  • IP67 Waterproof
  • Lightweight & Durable

Who's Using the Kestrel DROP D2HS Heat Stress Monitor

  • Education & Classroom Use
  • Facilities Management
  • Farming & Agriculture
  • Firefighting
  • Hazardous Materials Response
  • Hunting
  • Individual At-Home Use
  • Military
  • Outdoor Event Organizers
  • Precision & Competitive Shooting
  • Research & Technology

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For the Kestrel DROP Certificate of Conformity and Specifications Sheet - Click here



  • This product contains a coin cell battery. Never put batteries in mouth. Swallowing may lead to serious injury or death.
  • Keep new and used batteries away from children. If the battery compartment does not close securely, stop using the product and keep it away from children.
  • If a coin cell battery is ingested or placed in any part of the body, immediately seek medical attention and have the doctor phone the National Capital Poison Control Center at 1-800-222-1222.


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