
White or black testo 174 – which logger is best for your business?
The mini data loggers consist of variants with internal sensors that measure temperature and temperature and humidity respectively. The loggers are available in white and black versions for different applications and needs as well as compliance with regulatory requirements.
The white testo 174 loggers are particularly suitable for measurements in all kinds of environments in the food industry and in life science activities. The mini data loggers are HACCP (Hazard Analysis and Critical Control Points) food-approved and comply with the EN 12830 standard (measurement of temperature-sensitive goods, not applicable to testo 174 H).
The black mini data loggers of the testo 174 series have the same technical specifications and high performance, making them a good choice for all possible environments and conditions in industries where food safety is not a requirement. The testo 174 T model meets the EN 12830 standard for measuring temperature-sensitive goods.

Example of users
- Food manufacturers
- Wholesalers
- Supermarkets
- Restaurants and cafés
- Research labs
- Pharmaceutical manufacturers
- Logistics companies
Possible applications
- Logging of temperature-controlled goods/refrigeration equipment
- Monitoring of indoor climate and temperature-controlled medicines
- Remote monitoring (when connected to an app) of transports of climate-sensitive goods

Example of users
- Manufacturing industries
- Maintenance and service departments
- Property management services
- Ventilation and cooling technicians
- museum
- Churches
Possible applications
- Support for commissioning and ongoing inspections and maintenance of ventilation and cooling systems
- Smooth error analysis
- Smart monitoring of indoor climate
- Logging of temperature-controlled goods/refrigeration equipment
Transfer temperature and humidity values to computer or app
There are different models of the testo 174 mini data loggers that give you the choice of either transferring the measurement data to your computer or to the testo Smart app your mobile phone or tablet. Choose the model that suits you best!

Data loggers with transfer to computer
These testo 174 loggers come with a cable with USB-C on one end (for connection in the logger) and USB-A (to the computer socket) for easy and fast transfer of measurement data to your computer. All you need to do is download a free software to your computer to transfer and collect all temperature and humidity values in one place.
Free software (PC) for download
Main features and benefits:
- testo ComSoft Basic – free downloadable software
- Easy logger settings, powerful analytics and smooth reporting
- Clear graphs and tables of measurement results
- Logger settings can be saved
- Raw data can be exported
- Possibility of color coding of alarms
- Optional measurement intervals, from once a minute and up

Data logs with transfer to app
testo 174 loggers with the extension BT in the name have Bluetooth and can be connected to the free testo Smart app. When you are within 30 meters of the logger, you simply transfer the measurement data to the app on your mobile phone or tablet. This gives you a good overview of all your temperature and humidity values.
Read more about the testo Smart app
Main features and benefits:
- The app is free to download and use
- No measurement interruptions – the logger is active all the time
- Clear and intuitive user interface of the app:
– 1st tab: instrument status
– 2nd tab: current measurement data (for reporting)
– 3rd tab: instrument settings - PIN code prevents unauthorized access to measurement data
- Logger settings can be saved
- Raw data can be exported
- Possibility to color code in the app and to see symbol in the instrument display in case of limit alarms.
Fully connected. Full control.
The free testo Smart app is your indispensable measurement center. There you will find all important measurement parameters related to your food safety. You have access to updated values at any time. Thanks to the seamless connection (with optional registration) of the measuring instruments to the app, you can take advantage of many smart functions to optimize your food handling.
- Efficient. Fast registration and seamless and error-free digital documentation of all measurement results.
- Reliable. Storage of measurements and reports with precise traceability for defined time periods.
- Intuitive. User-friendly interface, easy to get started for less experienced and new staff.

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testo 174 T – mini temperature logger with USB-C
950:- Art.nr 0572 1740 01Advantages of this temperature logger: This product has multiple variants. The options may be chosen on the product page- Fast, easy data readout via USB-C
- Free software for measurement data management
- Measuring range from -30 °C to +70 °C
- Dust and waterproof
- Complies with EN 12830
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testo 174 T BT – mini temperature logger with Bluetooth
1 275:- Art.nr 0572 1742 01Advantages of this temperature logger: This product has multiple variants. The options may be chosen on the product page- Readout of data via Bluetooth without measurement interruption
- Free app for all measurement data management
- Measuring range from -30 °C to +70 °C
- Dust and waterproof
- Complies with EN 12830
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testo 174 H – mini moisture logger with USB-C
1 275:- Art.nr 0572 1741 02Advantages of this mini data logger: This product has multiple variants. The options may be chosen on the product page- Fast, easy data readout via USB-C
- Free software for measurement data management
- Measuring range from -20 °C to +70 °C
- Moisture sensor with accuracy of ±3%RH
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testo 174 H BT – mini moisture logger with Bluetooth
1 450:- Art.nr 0572 1743 02Advantages of this moisture logger: This product has multiple variants. The options may be chosen on the product page- Readout of data via Bluetooth without measurement interruption
- Free app for all measurement data management
- Measuring range from -20 °C to +70 °C
- Moisture sensor with accuracy of ±3%RH