1. Introduction
The Shelly BLU H&T is a compact, water and dust-resistant Bluetooth sensor designed to accurately measure temperature and humidity. This device is an integral part of a smart home ecosystem, enabling users to monitor environmental conditions and automate climate control when integrated with other Shelly devices. This manual provides essential information for the safe and effective use of your Shelly BLU H&T sensor.
Image 1: Introduction to the Shelly BLU H&T sensor, highlighting its precision and durability.
2. Safety Information
- Read this user manual carefully before installation and use.
- Do not attempt to disassemble or modify the device.
- Keep the device away from direct sunlight, heat sources, and open flames.
- Ensure the battery is inserted correctly according to polarity markings.
- Dispose of used batteries responsibly according to local regulations.
- The device is IP54 rated for dust and splash water resistance; however, it is not designed for submersion in water.
3. What's in the Box
Upon opening the product packaging, you should find the following items:
- 1 x Shelly BLU H&T Sensor (Black)
- 1 x CR2032 3V Battery (pre-installed)
- 1 x User Manual (this document)
Image 2: The Shelly BLU H&T sensor and its packaging.
4. Device Overview
The Shelly BLU H&T sensor is designed for discreet placement and reliable performance. It features a compact square design with a central sensor opening and a small LED indicator.
Image 3: Detailed view of the Shelly BLU H&T sensor.
Key features include:
- Bluetooth Low Energy (BLE) Technology: Ensures quick response and extended battery life.
- IP54 Rating: Provides resistance against dust and splashing water, suitable for both indoor and outdoor use.
- Precise Measurements: Accurately monitors temperature and humidity levels.
- Data History: Access historical data for environmental trends.
- Beacon Mode: Allows for proximity-based automations.
Image 4: Features of the Shelly BLU H&T, emphasizing Bluetooth operation.
Image 5: The Shelly BLU H&T's IP54 durability and suitability for various environments.
5. Setup
5.1. Battery Installation
The Shelly BLU H&T comes with a pre-installed CR2032 3V battery. To activate the device, remove the small plastic tab if present. If you need to replace the battery, gently open the device casing and insert a new CR2032 battery, ensuring correct polarity.
5.2. Shelly Smart Control App Installation & Pairing
To utilize the full functionality of your Shelly BLU H&T sensor, you need to pair it with the Shelly Smart Control app. The app is available for both iOS and Android devices.
- Download the Shelly Smart Control app from your device's app store.
- Create an account or log in to your existing Shelly account.
- Ensure Bluetooth is enabled on your smartphone.
- In the app, follow the on-screen instructions to add a new device. The app will scan for nearby Shelly BLU devices.
- Select your Shelly BLU H&T from the list and complete the pairing process.
5.3. Gateway Requirement
The Shelly BLU H&T sensor requires a compatible Shelly gateway device (e.g., Shelly BLU Gateway, Shelly Plus, Pro, or Gen3 device) to connect to the Shelly Smart Control app and enable remote monitoring and automation features. Without a gateway, the sensor will operate locally but cannot communicate with the app or cloud services.
6. Operation
6.1. Monitoring Temperature and Humidity
Once paired with the Shelly Smart Control app via a gateway, you can view real-time temperature and humidity readings from your sensor. The app provides a dashboard to monitor current conditions and access historical data.
Image 6: The Shelly BLU H&T offers data history and secure communication.
Image 7: The sensor's role in climate control by tracking temperature and humidity.
6.2. Smart Scenes and Automation
The Shelly BLU H&T sensor can be used to trigger automated actions (Smart Scenes) with other Shelly devices. For example:
- Temperature Control: If the temperature drops below a set threshold, automatically activate a Shelly-controlled heater.
- Humidity Management: If humidity exceeds a certain level, turn on a fan connected to a Shelly relay.
- Window/Blind Control: Based on outdoor temperature, automatically adjust blinds or open/close windows (with compatible Shelly devices).
Image 8: The sensor enables scene activation and automation with other Shelly devices.
Video 1: An official Shelly video demonstrating how Shelly devices can create a smart home environment. This video showcases various smart home applications, including lighting, security, energy saving, and daily routine simplification, highlighting the benefits of integrating Shelly products into your life.
7. Maintenance
7.1. Battery Replacement
The Shelly BLU H&T uses a single CR2032 3V battery. The battery life can vary depending on usage and environmental conditions. When the battery level is low, you will receive a notification via the Shelly Smart Control app. To replace the battery:
- Gently open the device casing.
- Remove the old CR2032 battery.
- Insert a new CR2032 3V battery, ensuring the positive (+) side faces up.
- Close the device casing securely.
7.2. Cleaning
To clean the device, use a soft, dry cloth. Do not use abrasive cleaners, solvents, or immerse the device in water. Ensure the sensor opening remains clear of dust and debris for accurate readings.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device not detected during pairing | Bluetooth is off; device out of range; low battery. | Ensure Bluetooth is on, move device closer to phone/gateway, check/replace battery. |
| Inaccurate readings | Sensor opening blocked; device placed in extreme conditions. | Clean sensor opening, relocate device to a suitable environment. |
| No remote access/automation | No Shelly gateway connected or configured. | Ensure a compatible Shelly gateway is set up and connected to the internet. |
| Short battery life | Frequent data updates; extreme temperatures. | Adjust reporting frequency in app settings, avoid extreme temperatures. |
9. Specifications
Detailed technical specifications for the Shelly BLU H&T sensor:
| Feature | Specification |
|---|---|
| Model Number | 3800235266809 |
| Connectivity | Bluetooth Low Energy (BLE) |
| Power Supply | 1 x CR2032 3V Battery (included) |
| Battery Life | Up to 5 years (depending on usage) |
| Temperature Range | 0°C to 60°C (32°F to 140°F) |
| Humidity Range | 0% to 100% RH (non-condensing) |
| Accuracy | Temperature: ±0.5°C; Humidity: ±5% RH |
| IP Rating | IP54 (Dust and splash water resistant) |
| Dimensions | 1.46 x 1.46 x 1.46 inches (37 x 37 x 13 mm) |
| Weight | 0.46 ounces (13 grams) |
| Mounting Type | Panel Mount |
Image 9: Dimensions of the Shelly BLU H&T sensor.
10. Warranty and Support
Shelly provides a 2-year device warranty. For technical support, product information, or warranty claims, please refer to the official Shelly support resources.
- Online Support: Visit the Shelly Support Home for a knowledge base, FAQs, and community forums.
- Professional Support: Contact Shelly customer service for direct assistance.
Image 10: Scan the QR code for quick access to Shelly's support resources.
11. Related Shelly Products
Enhance your smart home experience by integrating the Shelly BLU H&T with other Shelly devices:
