Christmas Savings Event
Kestrel D2

Kestrel D2

DROP 2 Wireless Temperature & Humidity Data Logger
SAVE 17%
List Price: $133.99
Our Price: $109.95
Select a model below to view stock status
Select Model Option:


Free Shipping for Continental U.S. orders over $50
30-day Satisfaction Guarantee



The Kestrel DROP D2 is the world's easiest-to-use rugged waterproof environmental data logger. Use the Kestrel DROP D2 to monitor temperature, humidity, dew point and heat index for research, safety, athletics & outdoor sports, education & classroom applications, facility management, farm & agriculture, firefighting, personal use, outdoor events and more. The DROP allows you to monitor and record vital conditions of any environment; indoors or outdoors, wet or dry.

Easily access and chart real-time and historical data on your iPhone, iPad, Android or other mobile devices via Bluetooth by using the free Kestrel LiNK app. Store more than 8,000 data points and get months of logging. Customize logging interval and other settings as well as real-time threshold alerts. Min/Max/Average readings are clearly displayed and the log is viewable as a scrolling graph with detailed data for each logged point. Data logs are automatically retrieved wirelessly to the Kestrel LiNK app when within range (up to 100 feet or more line of sight). Readings can be updated as frequently as every two (2) seconds and logging time and date are automatically updated whenever connected to your mobile device. See, save and share data from multiple Kestrel DROP loggers that may be viewed on one mobile device. You can also send and share real-time and logged environmental data via email, Facebook or Twitter.

DROP data loggers meet military and international standards for water, dust and shock resistance (IP-67-30 minute submersion at 1m and MIL-STD-810G drop tested) and are equipped with a sturdy D-ring for hanging wherever needed.

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.

  • Temperature
  • Dew Point
  • Heat Stress Index
  • Humidity
  • Relative Humidity
  • Bluetooth Smart (Wireless Technology)
  • Data Logger
  • Drop-Tested, MIL-STD-810G
  • IP67 Waterproof
  • Lightweight & Durable
  • Five-year warranty from the manufacturer
  • Made in the USA
  • Bedroom
  • Basement
  • Attic
  • Kennel
  • Barn
  • Hatchery
  • Shipping Container
  • Airplane
  • Ship
  • Transport Goods
  • Warehouse
  • Factory
  • Humidor
  • Safe
  • Refrigerator
  • Field
  • Winery
  • Forest
  • Laboratory Classroom
  • Training Center
  • Kitchen
  • Silo
  • Shooting Range
  • Construction Site
  • HVAC System
Kestrel DROP Who Uses
  Kestrel Drop 1 Kestrel Drop 2 Kestrel Drop 3
  D1 D2 D3
  Temperature Check Mark Check Mark Check Mark
  Humidity   Check Mark Check Mark
  Heat Index   Check Mark Check Mark
  Dew Point Temperature   Check Mark Check Mark
  Station Pressure     Check Mark
  Density Altitude     Check Mark
  Pressure Trend     Check Mark
  • Temperature
    • Accuracy: 0.9F (0.5C)
    • Resolution: 0.1F (0.1C)
    • Range: 14 to 131F (-10 to 55C)
  • Humidity
    • Accuracy: 2% RH
    • Resolution: 0.1% RH
    • Range: 10% to 90% RH at 77F (25C)
  • Dew Point
    • Accuracy: 3F (1.8C)
    • Resolution: 0.1F (0.1C)
    • Range: 10% to 90% RH at 77F (25C)
  • Heat Index
    • Accuracy: 5F (2.6C)
    • Resolution: 0.1F (0.1C)
    • Range: 10% to 90% RH at 77F (25C)
  • Operational Range
    • Temperature: 0 to 140F (-18 to 60C)
    • Humidity: 0 to 100% RH
    • Barometric Pressure: 10-1200 hP
  • Data Storage: 8165 data points
  • Connectivity: Bluetooth Low Energy (BLE)
  • Logging Rate: 2 seconds to 12 hours
  • Storage Temperatures: -22 to 140F (-30 to 60C)
  • Shock Resistance: MIL-STD-810G, Transit Shock, Method 516.5 Procedure IV (4 foot drop test)
  • Water Resistance: IP67 and NEMA-6 (30 minute submersion at 1 meter, 3.3 ft)
  • Compliance: CE certified, FCC, IC tested, RoHS and WEEE compliant
  • Source: Designed and manufactured in USA. Complies with Regional Value Content and Tariff Code Transformation requirements for NAFTA Preference Criterion B
  • Power requirements: 1 user-replaceable CR2032 lithium coin cell battery (included)
  • Battery life: ±2,880 hours, depending on temperature and use

Apple Store DownloadGoogle Play Download

Firmware: iOS versions 8 and later
Hardware: iPhone 4s onward, iPad 3rd generation onward, iPod Touch 5th generation onward

Firmware: Android 4.3 and later
Hardware: Most Android devices with Bluetooth Smart, including Samsung Galaxy, Nexus 4, Motorola Droid and other recent generation phones and tablets

  • Size: 2.40" x 1.80" x 0.90" (60mm x 45mm x 23mm)
  • Weight: 1.2 oz (34 g)


This product has not yet been reviewed. Product Rating
Why Shop with 60 Day Guarantee
Why Shop with Why Shop with Staff Note Staff Note

Our Customers Say