Kestrel DROP D1P Wireless Temperature Monitor and Data Logger

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.

Key Features

• Unmatched Versatility: Monitor temperature in submerged, hard-to-reach, or harsh conditions with ease.
• Rugged Durability: Built to withstand tough environments, drop-tested to MIL-STD 810, and waterproof to IP67 standards.
• Submersible Probe: Reliable temperature readings during extended submersion, exceeding IP67 capabilities.
• Effortless Data Management: View, log, and share data wirelessly using Bluetooth® and the free Kestrel LiNK app on your iOS or Android device.
• Extensive Data Logging: Store over 16,000 data points with customizable intervals for precise monitoring and historical analysis.
• Compact and Portable: Lightweight design with a built-in D-ring for easy deployment.

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, customize 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

Where can the Kestrel DROP D1P make a difference?

• 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 optimize 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.

Connectivity

Kestrel LiNK for iOS & Android

The Kestrel LiNK® App for iOS/Android allows you to Wirelessly connect with iOS and Android devices and remotely view real-time environmental data and receive alerts for changing conditions. Available for your Kestrel 5 Series Meter or DROP Logger, Kestrel LiNK also provides easy transfer of the Kestrel's stored data log, a clear graph of all historical data. Alerts can be customized based on temperature, heat index, wind, or other measurements. LiNK enables easy firmware updates of Kestrel 5 series meters.

Data is transmitted wirelessly via Bluetooth® Low Energy within wireless range (100' line of sight- reduced by walls and obstructions). Mobile device and Kestrel must remain within range to trigger alerts.

Learn more about what the Kestrel LiNK app can do for you.

Download from your App Store

An application that can be used to view and analyze your Kestrel data on an iOS or Android device.

Kestrel LiNK for Windows and MAC

Kestrel LiNK for Windows and MAC provides a desktop solution for data retrieval and export as well as firmware updates. Expanded connectivity options allow you to wirelessly connect LiNK enabled Kestrel 5 Series Meters, using the optional LiNK USB Dongle, or make a wired USB connection with non-LiNK Kestrel 5 Meters using the USB Data Transfer Cable.

Kestrel LiNK for Windows (Size: 10.7 MB)
Kestrel LiNK Version 1.04.04 for Windows

Kestrel LiNK for OSX (Size: 10 MB)
Kestrel LiNK Version 1.04.04 for OSX

Kestrel LiNK Devices on Ambient Weather Network

Kestrel LiNK devices, including the Kestrel 5000 series meters and Kestrel DROP data loggers, can now connect to the cloud-based Ambient Weather Network (AWN) platform for extended remote monitoring capabilities.*

You can set up your Kestrel device at any desired location that has an internet connection and then view the onsite conditions from wherever you are -- on the AWN app or AmbientWeather.net. You do not have to be onsite to remain in the know about your weather conditions.

Create a free account at AmbientWeather.net

Download the AWN app

*The Kestrel LiNK device data transfer to the AWN cloud platform functionality is specific to Android devices, as the integration with AWN and the transmission of data via the LiNK app relies on the Android platform's capabilities. The Android device must be within Bluetooth range and connected to the internet in order to transmit data from the Kestrel device to the AWN cloud platform. This allows for real-time monitoring and data analysis from virtually anywhere.

Specs

SENSORS
SENSORS	ACCURACY (+/-)	RESOLUTION	SPECIFICATION RANGE	NOTES
AmbientTemperature	0.9 °F 0.5 °C	0.1 °F 0.1 °C	14 to 131°F -10 to 55 °C	Airflow of 2.2 mph|1 m/s or greater provides fastest response and reduction of insolation effect. For greatest accuracy, avoid direct sunlight on the temperature sensor and prolonged sunlight exposure to the unit in low airflow conditions. Calibration drift is negligible for the life of the product. For further details, see Battery Operational Temperature Limits.
Relative Humidity	2%RH	0.1 %RH	10 to 90% 25°C noncondensing	To achieve stated accuracy, unit must be permitted to equilibrate to external temperature when exposed to large, rapid temperature changes and be kept out of direct sunlight. Calibration drift is typically less than ±0.25% per year.
Pressure	1.5 hPa|mbar 0.044 inHg 0.022 PSI	0.1 hPa|mbar 0.01 inHg 0.01 PSI	25°C/77°F 700-1100 hPa|mbar 20.67-32.48 inHg 10.15-15.95 PSI	Monolithic silicon piezo-resistive pressure sensor with second-order temperature correction. Between 1100–1600 mbar, unit will operate with reduced accuracy. Sensor may not operate above 1600 mbar and can be damaged above 6,000 mbar or below 10 mbar. Calibration drift is negligible for the life of the product.

CALCULATED MEASUREMENTS
MEASUREMENT	ACCURACY (+/-)	RESOLUTION	SENSORS EMPLOYED
Density Altitude	226 ft 69 m	1 ft 1 m	Temperature, Relative Humidity Pressure
Dew Point	3.4 °F 1.9 °C 15- 95% RH. Refer to Range for Temperature Sensor	0.1 °F 0.1 °C	Temperature, Relative Humidity
Heat Index	7.1°F 4.0°C	0.1 °F 0.1 °C	Temperature, Relative Humidity
THI (NRC)	1.5 °F 0.8 °C	0.1 °F 0.1 °C	Temperature, Relative Humidity
THI (Yousef)	2.3 °F 1.3 °C	0.1 °F 0.1 °C	Temperature, Relative Humidity
Wet Bulb Temperature - Psychrometric	3.2 °F 1.8 °C	0.1 °F 0.1 °C	Temperature, Relative Humidity Pressure

ADDITIONAL PRODUCT INFO
Response Time & Display Update	Display updates every 1 second. After exposure to large environmental changes, all sensors require an equilibration period to reach stated accuracy. Measurements employing RH may require longer periods particularly after prolonged exposure to very high or very low humidity. WBGT requires about 8 minutes to reach 95% accuracy and about 15 minutes to reach 99% accuracy after exposure to large environmental changes.
Data Storage	Logged history stored for every measured value. Auto-store interval settable from 2 seconds to 12 hours*, overwrite on or off. D1: >13,000 data points, D2: >7,000 data points, D3: >6,000 data points.
Bluetooth® Data Connect Option	Wireless range up to 100ft|30m. Compatible with Kestrel LiNK app for iOS (model 4s and later) and select Android products (Android 4.3 and higher) (See website for complete list of compatible 3rd party apps).
Certifications	CE certified, RoHS, FCC, IC tested and WEEE compliant. Individually tested to NIST-traceable standards.
Origin	Designed and manufactured in the USA from US and imported components. Complies with Regional Value Content and Tariff Code Transformation requirements for NAFTA Preference Criterion B.
Battery	User-replaceable CR2032 (included).
Shock Resistance	MIL-STD-810g, Transit Shock, Method 516.6 Procedure IV; unit only; impact may damage replaceable impeller.
Sealing	Waterproof (IP67 and NEMA-6)
Battery Operational Temperature Limits	0° F to 140 ° F | -18 °C to 60°C Measurements may be taken beyond the limits of the operational temperature range of batteries by maintaining the unit within the operational range and then exposing it to the more extreme environment for the minimum time necessary to take reading.
Storage Temperature	-22.0 °F to 140.0 °F | -30.0 °C to 60.0 °C.
Size & Weight	2.4 x 1.8 x 0.9 in | 6 x 4.5 x 2.3 cm 1.2oz | 34g (Lithium battery included)

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DROP Data Logger Certificates of Comformity

Certificate of Conformity Kestrel DROP Wireless Data Logger   (Size: 518.2 KB)

Kestrel DROP Wireless Environmental Data Logger specification chart

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