Kestrel DROP D2 Bluetooth Data Logger - Temperature | Humidity

Product Overview

The Kestrel DROP D2 Bluetooth Data Logger is a compact, waterproof environmental monitoring solution that measures and logs temperature and relative humidity. Perfect for storage monitoring, environmental research, and data collection applications.

Frequently Asked Questions

What does the Kestrel DROP D2 measure?

The DROP D2 measures two key environmental parameters: temperature and relative humidity. It continuously logs this data and transmits it wirelessly via Bluetooth to your smartphone or tablet.

How do I connect the DROP D2 to my device?

Download the free Kestrel LiNK app (available for iOS and Android), enable Bluetooth on your device, and follow the in-app pairing instructions. The DROP D2 will automatically connect when in range (up to 100 feet).

How long does the battery last?

The DROP D2 runs on a standard CR2032 coin cell battery that typically lasts 2+ years with normal use. Battery life depends on logging interval and Bluetooth connection frequency.

Is the DROP D2 waterproof?

Yes! The DROP D2 is fully waterproof (IP67 rated) and even floats, making it ideal for outdoor use, marine environments, and storage areas where moisture may be present.

What is the measurement range?

Temperature: -22°F to 140°F (-30°C to 60°C)
Relative Humidity: 0% to 100% RH
Both measurements are highly accurate and calibrated to NIST standards.

How much data can it store?

The DROP D2 can store over 2,000 data points internally. When connected to the Kestrel LiNK app, data is automatically uploaded to the cloud for unlimited storage and analysis.

Can I set custom logging intervals?

Yes, you can customize logging intervals from 2 seconds to 12 hours using the Kestrel LiNK app, allowing you to balance data resolution with battery life and storage capacity.

Does it work without a smartphone nearby?

Absolutely! The DROP D2 logs data independently and stores it internally. You only need your smartphone to configure settings, view real-time data, or download logged information.

Can I set alerts and notifications?

Yes, the Kestrel LiNK app allows you to set custom high/low threshold alerts for both temperature and humidity. You'll receive push notifications when conditions exceed your specified limits.

What's included in the box?

Each DROP D2 includes the data logger unit, CR2032 battery (pre-installed), quick start guide, and access to the free Kestrel LiNK app.

Is there a subscription fee for the app or cloud storage?

No! The Kestrel LiNK app and cloud data storage are completely free with no subscription fees or hidden costs.

Can I use multiple DROP units together?

Yes, you can monitor multiple DROP data loggers simultaneously through the Kestrel LiNK app, making it perfect for monitoring different locations or environments at once.

What's the difference between the D2, D2AG, and D2HS models?

The D2 measures temperature and humidity. The D2AG adds livestock heat stress calculations. The D2HS adds heat stress index for workplace safety monitoring. Choose based on your specific application needs.

How accurate are the measurements?

Temperature accuracy: ±0.9°F (±0.5°C)
Humidity accuracy: ±2% RH
All sensors are factory calibrated and meet professional-grade standards.

Can I export my data?

Yes, the Kestrel LiNK app (available below) allows you to export data in CSV format for analysis in Excel, Google Sheets, or other data analysis software.