The Kestrel DROP D1P combines a rugged design with advanced features that simplify data collection in the toughest conditions. Whether submerged, enclosed, or in extreme environments, the DROP D1P delivers unparalleled accuracy and convenience.
Why Choose the Kestrel DROP D1P?
The Kestrel DROP D1P is the easiest way to track temperature in submerged or hard-to-reach areas. Here's why professionals and enthusiasts trust it:
Reliability in Any Environment
Perfect for aquatic research, soil temp monitoring, or cold storage, the DROP D1P is rugged enough to thrive in extreme conditions. The submersible probe ensures precise measurements while the main unit stays securely in place for optimal Bluetooth data transmission.
Efficient and User-Friendly
Powered by the Kestrel LiNK app, you can seamlessly monitor real-time and historical data, customise alerts, and share insights—all from your mobile device. Monitor up to 8 different devices simultaneously and export reports with ease.
Trusted Quality
Built in the USA, each unit is calibrated to NIST-traceable standards and includes a Certificate of Conformity, ensuring unmatched accuracy and reliability. Backed by a five-year warranty, the DROP D1P is a tool you can count on for years to come.
Applications

- Aquatic Monitoring: Track water temperatures in pools, aquariums, aquaponics systems, or environmental research projects.
- Research: Ideal for scientific studies requiring precise and reliable temperature data in various environments.
- Agriculture & Gardening: Monitor soil temperatures to optimise growth conditions for plants and crops.
- Cold Chain Storage: Ensure compliance by maintaining precise temperature logs in refrigeration and storage units.
- Industrial Applications: Perfect for concrete curing, HVAC systems, and more.
Kestrel DROP data loggers are designed to be used anywhere you need to track environmental conditions. DROP loggers meet military and international standards for water, dust and shock resistance and are equipped with a sturdy D-ring for hanging wherever needed.
Use a DROP Anywhere - Small, Accurate, Rugged and Waterproof
The Kestrel DROP D1 employs a sealed precision thermistor mounted externally and thermally isolated for rapid response to monitor and record temperature over an operational and specification range of 10°C to 55°C within +/- 0.5°C accuracy. Each Kestrel DROP Data Logger is powered by one easily replaceable CR2032 lithium coin cell battery that will last up to 4 months (typical conditions and logging/connection settings). The DROP D1 holds more than 13,000 temperature readings.
Powered by the Kestrel LiNK App
Kestrel LiNK is the free app that powers the DROP loggers. With Kestrel Connect, you can view real-time readings from any DROP logger within wireless range (100 ft 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 log is viewable as a scrolling graph with detailed data for each logged point.
The 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. Send and share real-time and logged environmental data via email.
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 metre at a time.
