1. Вступ
The UNI-T A56 BT and A57 BT are advanced temperature and humidity dataloggers designed for precise environmental monitoring. These devices feature a large data storage capacity of 64,000 sets, Bluetooth connectivity for seamless communication with PC and mobile applications, and robust IP54 protection. They are ideal for various applications requiring accurate and reliable temperature and humidity data logging, such as food processing, cold-chain transportation, and warehouse monitoring.
2. Ключові характеристики
- Висока точність: Measures temperature with an accuracy of ±0.3°C and humidity with ±2.5%RH.
- Велике сховище даних: Capable of storing up to 64,000 sets of temperature and humidity data.
- Підключення Bluetooth: Enables wireless data transfer and configuration via Bluetooth to a mobile application (TempLink) or PC analysis software.
- Audible and Visible Alarm: Provides alerts for out-of-limit temperature and humidity conditions.
- Захист IP54: Offers protection against dust and splashing water, suitable for various environments.
- Magnetic Wall-Mounted Design: Allows for flexible and secure placement.
- Adjustable Record Interval: Logging intervals can be set from 10 seconds to 24 hours.
- Багатомовна підтримка: User interface available in English, French, German, Italian, Spanish, Swedish, Polish, and Czech.
- Тривалий термін служби батареї: Powered by a single-use Li-ion battery (3.6V 2700mAh ER14505) with up to 2 years of life (room temperature, 15min record interval).

Малюнок 2.1: Закінченоview of UNI-T A56 BT Datalogger key features including Bluetooth APP, 64000 Data Storage, High Accuracy, PC Analysis Software, Audible and Visible Alarm, and Waterproof Dustproof (IP54).

Figure 2.2: Detailed features including simultaneous large-screen display, wide measurement range (-40°C to 85°C), adjustable record interval, over-limit alarm, and magnetic wall-mounted design.
3. Налаштування
3.1. Первинний огляд
Upon unpacking, verify that all components are present and undamaged. The package typically includes the A56 BT datalogger, a gift box, a quick start guide, a safety instruction, download operation guide, battery, wall-mounted screws*2, expandable rubber plug*2, and a USB cable.
3.2. Встановлення батареї
The datalogger uses a single-use Li-ion battery (3.6V 2700mAh ER14505). Refer to the quick start guide for specific instructions on how to open the battery compartment and correctly insert the battery. Ensure proper polarity.
3.3. Встановлення програмного забезпечення
Download the UNI-T TempLink mobile application from your device's app store or the PC analysis software from the official UNI-T webсайт. Дотримуйтесь інструкцій на екрані для встановлення.
3.4. Mounting the Datalogger
The A56 BT features a magnetic wall-mounted design. Choose a suitable location for monitoring, ensuring it is within Bluetooth range of your control device if wireless operation is desired. Use the provided screws and plugs for secure wall mounting if needed.

Малюнок 3.1: Спереду view of the A56 BT Datalogger, displaying current temperature and humidity readings.
4. Інструкція з експлуатації
4.1. Підключення через Bluetooth
- Ensure Bluetooth is enabled on your smartphone or PC.
- Open the TempLink app or PC software. The software will automatically search for nearby A56 BT/A57 BT dataloggers.
- Select your datalogger from the list of discovered devices to establish a connection.
4.2. Configuring Logging Parameters
Using the TempLink app or PC software, you can configure various logging parameters:
- Інтервал реєстрації: Set how frequently data is recorded (e.g., 10s, 1min, 1h).
- Порогові значення тривоги: Define upper and lower limits for temperature and humidity to trigger audible and visual alarms.
- Start/Stop Logging: Initiate or terminate data recording.
- Вибір одиниці: Choose between °C and °F for temperature display.
4.3. Запуск та зупинка реєстрації даних
Once configured, you can start logging directly from the app/software. The datalogger will begin recording data at the specified interval. To stop logging, use the corresponding function in the application.
4.4. Data Retrieval and Analysis
After logging, connect the datalogger to the TempLink app or PC software. You can then download the recorded data. The software allows for graphical analysis of the data and export into various formats such as XLSX (Excel), CSV, or TXT for further processing.

Figure 4.1: Illustration of the datalogger's capabilities, including 64000 data storage, Bluetooth APP and PC software support, and automatic generation of multiple report forms (PDF, CSV).
5. Технічне обслуговування
5.1. Заміна батареї
When the battery indicator on the display shows low power, replace the battery promptly to ensure continuous operation and data integrity. Use only the specified battery type (3.6V 2700mAh ER14505 Li-ion battery).
5.2. прибирання
Wipe the datalogger with a soft, dry cloth. Do not use abrasive cleaners or solvents. While the device has IP54 protection, avoid submerging it in water or exposing it to excessive moisture.
5.3. Зберігання
Store the datalogger in a cool, dry place away from direct sunlight and extreme temperatures when not in use for extended periods. Remove the battery if storing for several months to prevent leakage.
6. Вирішення проблем
- Пристрій не підключається через Bluetooth: Ensure the datalogger is powered on and within range (up to 100 feet). Check that Bluetooth is enabled on your smartphone or PC. Restart both the datalogger and the application.
- Неточні показники: Verify that the datalogger is placed in an environment free from direct heat sources, strong air currents, or excessive moisture that could affect sensor performance. Ensure the sensor opening is not obstructed.
- Data logging not starting: Confirm that logging parameters have been correctly configured and the 'Start' command has been issued through the application. Check battery level.
- Дисплей не працює: Check the battery level and replace if necessary. If the issue persists, contact customer support.
7. Технічні характеристики

Figure 7.1: Detailed table of functions, ranges, accuracy, and other characteristics of the A56 BT Datalogger.
| Особливість | Специфікація |
|---|---|
| Модель продукту | YH-A56 BT |
| Діапазон температур | -40°C ~ 85°C (-40°F ~ 185°F) |
| Точність температури | ±0.3°C (0°C < t ≤ 60°C) |
| діапазон вологості | 0% ~ 100% відносної вологості |
| Точність вологості | ±2.5%RH (0% ≤ RH ≤ 90%) |
| Ємність запису | 64,000 набори |
| Інтервал запису | 10s ~ 24h (Adjustable via App/PC) |
| Підключення | Bluetooth APP (TempLink), PC Analysis Software |
| сигналізація | Audible and Visible |
| Рейтинг захисту | IP54 |
| Тип батареї | Single-use Li-SOCl2 Battery 3.6V 2700mAh (ER14505) |
| Час роботи | 2 years (Room temperature, 15min record interval, screen off, indicators/Bluetooth off) |
| Монтаж | Задній магнітний або настінний монтаж |
| Розмір продукту | 104 x 62 x 25 мм |
| Вага нетто продукту | Близько 110 г |
| Розміри продукту | 6.5 x 4.33 x 4.72 дюймів |
| Вага товару | 2.2 фунта (приблизно 1 кг) |
| Виробник | UNI-Trend |
8. Гарантія та підтримка
Warranty information for the UNI-T A56 BT/A57 BT Temperature Humidity Datalogger is typically provided with the product packaging or available on the official UNI-T webсайт. Будь ласка, зверніться до цих ресурсів для отримання детальних гарантійних умов.
For technical support, product inquiries, or service, please visit the official UNI-T website or contact their customer service department through the contact information provided in your product documentation.





