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Temperature and Humidity Data Logger with WiFi access

Digital Data Logger BS-T&H-WiFi

Made in Bulgaria

• System for continuous measurement, indication and recording of temperature and humidity
• Measures, displays and records temperature from a digital sensor in a range from -40° to +125°C, accuracy 0.4°C
• Measures, displays and records humidity from a digital sensor ranging from 3% to +98%, precision 3%
• Automatically scrolls the work screen with all measured data
• Access the logger via any smart device through the Access Point or WiFi Client on your wireless network
• Only 3 buttons: screen scroll, memory reset, and factory reset
• Logger customization menus for AP name, owner name, installation location
• WiFI name and password selection menu, automatic network scanning
• Menus for adjusting the minimum and maximum temperature and humidity limits
• Graphic display and 2-color LED display for remote alarm monitoring
• Built-in memory with 8000 entries, no loss of data when power is lost, endless scrolling
• Select a recording time interval - from 1 to 600 minutes
• Exports the records to a .CSV file in a tabular form containing Day, Month, Year, Time, Minutes, T ° C, H%
• Built-in clock and calendar with 3V battery
• Automatically adjusts date and time from a NTC server on the Internet
• Numeric and graphical representation of screen and web interface data
• Works with power from an external 5V DC adapter or a B-micro USB phone charger
• Does not need to install specialized software, works with any web browser
• Sends data to a server: https://www.mydatalogger.eu. Free account for 30 days for each data logger

• Warehouses for medicines
• Warehouses for food
• Mandy
• Hives
• Dryers
• Wailing
• Mushrooms
• Greenhouses
• Heating survey
• Animal watching
• Refrigeration chambers



Data logger BS-T&H-WiFi is designed for continuous indoor operation. It is mounted on a wall. Powered by a external adapter available from the manufacturer or a USM B-micro phone charger. It uses an external temperature and humidity sensor connected to the device with a 1.5 m cable ending with a 3.5 mm jack. It is possible to extend the distance from the sensor to the log up to 6 meters with the manufacturer's extension.

The unit operates continuously in the presence of power. Every 8 seconds on a small, graphical display, 6 working screens are continuously exchanged with all the data necessary for monitoring. Above the display, two-color LED indicators are triggered when temperature or humidity cross minimum or maximum limits, programmed by the customer.

All settings and uploaded data are available on your mobile device or PC anytime. Stored data on the server is available from anywhere in graphical and tabular form. The server can send an alarm email when the temperature and humidity thresholds set by the customer are exceeded.



BS-T&H-WiFi shows WiFi name and status

WiFI name and status

All data and settings are available through any smart device - tablet, phone, laptop or desktop computer. The logger can connect to a local WiFi network with name and password setting or be accessed as an Access Point if it is installed in a WiFi-free state.

One of the flip screens shows the device's IP address, which the router on your WiFi network has automatically assigned to it after correctly entering your username and password. With any web browser, data and settings are accessed via this address on the local wireless network.

BS-T&H-WiFi temperature digitally

temperature digitally

The currently measured temperature is indicated by a large font on the screen in digital format, accompanied by a time and date of the report.

Date is in format: DAY . MONTH . YEAR

Time is in the format: TIMES: MINUTES

By briefly pressing the bottom right button you can quickly scroll through the screens in their infinite order or wait for them to automatically change every 8 seconds.

data logger BS-T&H-WiFi shows temperature graphically

temperature graphically

After the measured temperature display on the graphical display, a graph of the last 15 saved reports is displayed. The most right of the graph is the newest measured value. Reports are recorded and visualized over the set time interval.

If the measured temperature is higher than the set Upper limit, the LED indicator lights up in RED.

If the measured temperature is lower than the set Lower limit, the LED indicator lights up in GREEN.

BS-T&H-WiFi humidity digitally

humidity digitally

With a smooth eclipse and subsequent lightening of the screen, the measured humidity is shown, with the date and time.

If the measured humidity is higher than the set Upper limit, the LED indicator lights up in RED.

If the measured humidity is lower than the set Lower Limit, the LED indicator lights up in GREEN.

Logger BS-T&H-WiFi shows humidity graphically

humidity graphically

The triggering of the alarm indicators takes place after each measurement and does not depend on the currently displayed screen. The device measures new data every 2 seconds.

The LED indicators are bright and easily visible from a distance.

The temperature and humidity sensor is in a small box with a built-in magnet to adhere to a metal surface and with a double-sided adhesive foil for non-metallic surfaces.

data logger BS-T&H-WiFi inform WiFI connection missing

WiFI connection missing

The built-in WiFi antenna range is 30 meters in direct view. If the device loses connection with the router, it does not interrupt the measurement and recording of data in the internal memory over the set time interval. The built-in clock continues to operate even after a power failure. Reading the recorded data is always possible by accessing the log via the Access Point.

When switching to astronomical time, the logger alone will adjust the built-in clock by taking real time and date from the Internet.

logger BS-T&H-WiFi Access Point name & pass

Access Point name & pass

You do not need to remember the Access Point names of any of your devices, even though they are visible when scanning for available WiFI networks. The name and password are displayed on one of the automatically scanned screens.

By pressing and holding a lower right button you can restore the factory settings shown in the picture and reprogram it with a new username and password using only your smartphone.

If you have downloaded data for the object under review and want to move the log to a new location, you can delete all the data in the memory by pressing and holding down the left left button.

data logger BS-T&H-WiFi every minute graphics

graphics of T in 1 minute

The shortest recording time you can set is 1 minute. Thanks to this, you can save a very detailed report for the object under investigation. When taking another selected time interval, the graphical representation of the screen should be interpreted not as the last 15 minutes, but as the last 15 reports. The set time interval in minutes can be checked and changed with a smartphone or via the local network by referring to the IP address of the device.

Graphic representation of the last 100 samples in the Temperature and Humidity Data Logger, browsed with a web browser via a desktop computer.

By pointing a mouse on a graph, a detailed time, date, and report value is described.

temperature and humidity from data logger BS-T&H-WiFi via web browser

viewing the last 100 recordings in graphic form via a web browser from a computer

logger BS-T&H-WiFi Android smartphone view

Android smartphone view

BS-T&H-WiFi set WiFi name and password with Android smartphone

configuring a WiFi name and password with Android smartphone

BS-T&H-WiFi customization menu via smartphone

customization menu

BS-T&H-WiFi show last 100 records of humidity via Android smartphone

graphical data view of saved reports

Сайт за данни от логера.

Разгледайте свободно с име и парола:


Set of BS-T&H-WiFi with power adapter and cables.

Set data BS-T&H-WiFi with sensor and power adapter


• The set includes:
    - BS-T&H-Wifi logger
    - Temperature and humidity sensor with 1.0 m cable
    - Free account for 30 calendar days for a data and alarms site: https://www.mydatalogger.eu
    - EUR 80.0 excluding VAT or EUR 96.0 inclusive of VAT

• The following components are available outside the kit and on customer request:
    - Impulse adapter AC 200V - DC 5V with two USB outputs - 2.6 EUR without VAT or 3.12 EUR with VAT
    - USB cable A plug to B-micro 1.5 meters long - 3 EUR without VAT or 3.60 EUR with VAT
    - USB cable A plug to a B-micro 3 meters long - 6 euros without VAT or 7.20 euros VAT
    - cable extension for sensor with jack and socket, length 2 meters - 5 EUR without VAT or 6 EUR with VAT

Technical data

• Dimensions of the BS-T & H-WiFI module: 60 mm height, 45 mm wide, 20 mm thick.
• Sensor box dimensions: 40 mm, 18 mm wide, 5 mm thick
• Diameter of the hole required to pass the sensor jack through a wall: 4 mm .
• Power consumption 5V: 80 mA
• Microcontroller: ESP8266
• Digital sensor: SI7021
• Accuracy of the measured temperature: +/- 0.4 ° C
• Accuracy of the measured humidity: 3%
• Adjustable recording time from 1 to 600 minutes
• Maximum range of WiFI outdoor - 30 meters
• Maximum Number of Records in Memory: 8192, Endless Scrolling
• Maximum cable length from logger to sensor - 6 meters
• Weight: 83 g
• IP-54 for indoor installation


Equipment warranty - 12 months. The warranty does not include damage from mechanical shocks, water penetration under the housing and improper handling of the device.

Protect Your Production

Download a .CSV file with real log data

Download a .XLS file with real log data