1. Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of your Brifit Bluetooth Thermometer Hygrometer. This device allows you to monitor temperature and humidity levels remotely via a smartphone application, offering precise data for various environments such as homes, offices, wine cellars, and greenhouses.
2. Product Overview
Key Features
- Wireless APP Control: Monitor temperature and humidity data remotely via Bluetooth connection to your smartphone.
- Data Logging & Export: Records data every 10 minutes, storing up to 100 days of historical data. Supports CSV data export.
- High-Precision Sensor: Equipped with a sensitive sensor for accurate measurements, refreshing data once per second. Temperature error: ±0.5°C (±1°F); Humidity error: ±5% RH.
- Smart Alerts: Receive on-device and smartphone notifications when temperature or humidity exceeds preset ranges.
- Compact & Portable Design: Small size (50 x 50 x 12 mm) with a magnetic back for easy placement.
- Long Battery Life: Utilizes a replaceable CR2477 button cell battery, providing approximately one year of operation.
Package Contents
- 2 x Brifit Bluetooth Thermometer Hygrometer
- 1 x User Manual
3. Setup
3.1 App Installation
To begin, download the companion application. Scan the QR code provided below or search for "Sensor Blue" in your device's app store.

Image: QR code for downloading the Sensor Blue app, part of the 'Easy to Use' guide.
Alternatively, you can find the app here: Sensor Blue App (iOS)
3.2 Battery Activation
Before first use, locate the battery compartment on the back of the device. Gently pull out the battery insulation sheet to activate the pre-installed CR2477 battery.

Image: Diagram illustrating the removable battery and the insulation sheet to be pulled out.
3.3 Device Pairing
- Ensure Bluetooth is enabled on your smartphone.
- Open the "Sensor Blue" application.
- In the app, select the option to add a new device.
- Press the button on the Brifit Thermometer Hygrometer once to initiate connection. The device supports Android 4.3 and above, and iPhone 4s and above.

Image: A Brifit sensor and a smartphone screen, with a Bluetooth 5.0 icon indicating connection.
For optimal connection, ensure your smartphone is within 35 meters (114.8 feet) of the device without significant obstructions.
4. Operation
4.1 App Control and Monitoring
Once connected, the Sensor Blue app will display real-time temperature and humidity readings from your device. You can view current values, as well as maximum and minimum recorded values.

Image: Two Brifit sensors and a smartphone showing the app's main display with current temperature and humidity.
4.2 Data Logging and Export
The device automatically logs temperature and humidity data every 10 minutes. This data is stored for up to 100 days. You can access historical data and export it in CSV format directly from the app after registering an account.

Image: A Brifit sensor in a greenhouse, with a phone displaying graphs of historical humidity and temperature trends.
4.3 Smart Alerts
You can set custom temperature and humidity ranges within the app. If the readings fall outside these ranges, the device will emit an audible alert, and a notification will be sent to your smartphone.
4.4 Switching Temperature Units
To switch between Celsius (°C) and Fahrenheit (°F), press and hold the button located on the device.
5. Maintenance
5.1 Battery Replacement
The device uses a CR2477 button cell battery. When the battery level is low, replace it by opening the battery compartment on the back of the device and inserting a new CR2477 battery, ensuring correct polarity.

Image: Detailed view of the sensor's back, highlighting the removable battery and its type (CR2477).
5.2 Cleaning
To clean the device, wipe it gently with a soft, dry cloth. Do not use liquid cleaners or immerse the device in water.
6. Troubleshooting
- Connection Issues: Ensure Bluetooth is active on your phone and that the phone is close to the device during pairing. The effective connection range indoors is typically less than 35 meters.
- Inaccurate Readings: Avoid placing the device inside refrigerators or freezers, as extreme conditions can affect sensor performance.
- Short Battery Life: While the battery is designed for approximately one year of use, actual life may vary based on usage and environmental factors. Ensure the battery is correctly installed and consider replacing it if issues persist.
7. Specifications
| Feature | Specification |
|---|---|
| Temperature Range | -20°C to 60°C (-4°F to 140°F) |
| Temperature Accuracy | ±0.5°C (±1°F) |
| Humidity Range | 0-100% RH |
| Humidity Accuracy | ±5% RH |
| Dimensions (L x W x H) | 50 x 50 x 12 mm (1.97 x 1.97 x 0.47 inches) |
| Wireless Range | Up to 35 m (114.8 ft) without obstructions |
| Battery Type | CR2477 |
| Model Number | 650728980520 |

Image: A Brifit sensor showing its display, accompanied by text outlining its temperature and humidity detection ranges and accuracy.
8. Safety Information
- Keep the device away from water and excessive moisture.
- Do not expose the device to extreme temperatures outside its specified operating range.
- Do not attempt to disassemble or modify the device, as this will void the warranty and may cause damage.
- Dispose of batteries according to local regulations.