1. Introduction
The Kestrel Drop D3 is a compact, wireless data logger designed to accurately measure and record environmental conditions. It monitors temperature, humidity, and pressure, transmitting data via Bluetooth to a compatible mobile device running the Kestrel LiNK app. This device is suitable for various applications requiring continuous environmental monitoring.
Figure 1: Front view of the Kestrel Drop D3 device, showing the Kestrel logo and D3 model designation.
2. Setup
2.1 Battery Installation
- Locate the battery compartment on the back of the Kestrel Drop D3.
- Using a small Phillips head screwdriver, carefully remove the four screws securing the battery cover.
- Insert one CR2032 lithium metal battery, ensuring the positive (+) side faces upwards.
- Replace the battery cover and secure it with the four screws. Do not overtighten.
Figure 2: Back view of the Kestrel Drop D3, showing the battery compartment and regulatory markings.
2.2 App Download and Pairing
- Download the Kestrel LiNK app from your device's app store (available for iOS and Android).
- Ensure Bluetooth is enabled on your mobile device.
- Open the Kestrel LiNK app. The app will automatically scan for nearby Kestrel Drop devices.
- Select your Kestrel Drop D3 from the list of discovered devices to establish a connection.
- Once connected, the app will display real-time data and allow access to logged information.
Figure 3: Kestrel Drop D3 packaging, showing the device, quick start guide, and a CR2032 battery.
3. Operating Instructions
3.1 Data Monitoring
- Once connected to the Kestrel LiNK app, the device will continuously log temperature, humidity, and pressure data.
- Real-time readings are displayed on the app interface.
- The device stores data internally, which can be downloaded to the app for historical analysis and reporting.
3.2 Understanding Pressure Readings
The Kestrel Drop D3 provides station pressure, which is the atmospheric pressure measured at the device's current altitude. It does not provide barometric pressure, which is station pressure adjusted to sea level. For applications requiring sea-level adjusted pressure, manual calculation or an external reference is necessary.
Figure 4: The Kestrel Drop D3 device held in a hand, illustrating its compact size.
4. Maintenance
4.1 Battery Replacement
When the battery level is low, the Kestrel LiNK app will indicate this. Replace the CR2032 battery following the steps outlined in Section 2.1. To conserve battery life when not in use for extended periods, it is recommended to remove the battery.
4.2 Cleaning
Wipe the exterior of the device with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners. Ensure the device is dry before re-use or storage.
4.3 Storage
Store the Kestrel Drop D3 in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, remove the battery to prevent leakage.
5. Troubleshooting
- Device not connecting via Bluetooth: Ensure Bluetooth is enabled on your mobile device and the Kestrel LiNK app is open. Move closer to the Drop D3 as Bluetooth range can be limited. Check if the battery is properly installed and has sufficient charge.
- Inaccurate readings: Allow the device 5-10 minutes to stabilize in a new environment before taking critical readings, especially after significant temperature or humidity changes. Ensure the sensors are not obstructed or dirty.
- Rapid battery drain: The Kestrel Drop D3 does not have an on/off switch. It is designed for continuous logging. If extended periods of non-use are anticipated, remove the battery to prevent unnecessary drain.
- Data not logging: Verify that the device is connected to the Kestrel LiNK app and that logging is enabled within the app settings. Ensure sufficient internal memory is available (though typically ample for standard use).
6. Specifications
| Brand | Kestrel |
| Model | Kestrel Drop D3 |
| Connectivity | Bluetooth |
| Power Source | 1 x CR2032 Lithium Metal Battery |
| Material | Plastic |
| Weight | 0.03 kg (approx. 1.06 oz) |
| Max Temperature Rating | 131°F (55°C) |
| Certifications | CE, FCC, RoHS, WEEE |
| Usage Environment | Designed for indoor and outdoor environmental monitoring. |
| UPC | 730650001156 |
| Manufacturer Model Number | KEST-0730RED |
7. Warranty and Support
7.1 Warranty Information
For detailed warranty information, please refer to the official Kestrel website or the documentation included with your purchase. Warranty terms and conditions may vary by region and retailer.
7.2 Customer Support
If you encounter issues not covered in this manual or require further assistance, please contact Kestrel customer support through their official website. Have your model number and purchase details ready when contacting support.
Official Kestrel Website: www.kestrelinstruments.com
