testo 174 H – Mini data logger for temperature and humidity with USB-C and PC software
The testo 174 H is a compact mini data logger for recording temperature and humidity. It uses an internal NTC temperature sensor and a capacitive humidity sensor, so it can document climate conditions clearly over time.
Testo positions the testo 174 H for indoor climate monitoring, storage areas, transport, offices, museums, archives, laboratories and warehouses. In addition, the white version carries HACCP International and NSF certification, so it supports documented monitoring where temperature and humidity records matter.
Efficient Climate Documentation
The testo 174 H records temperature and humidity automatically, with a selectable measuring cycle from 1 minute to 24 hours. It also stores 16,000 measurement value pairs, made up of 16,000 temperature values and 16,000 humidity values.
Data transfers to a PC via USB-C and works with testo ComSoft software for logger programming, data analysis and reporting. As a result, users can export measurement data in formats including PDF, XLS, HTML and CSV.
Built for Indoor Monitoring
The testo 174 H has a compact white plastic housing, a clear LCD display and a supplied wall bracket for simple placement. It measures just 60 x 38 x 18.5 mm and weighs 35 g, so it can sit unobtrusively in storage areas, rooms, cabinets or transport spaces.
The logger runs on two CR2032 lithium batteries and offers a battery life of 1 year at a 15 minute measuring cycle and +25 °C. However, it is not suitable for condensing atmospheres, and the humidity sensor must not be used in dusty environments.
Key Features
- 2-channel mini data logger for temperature and humidity
- Internal NTC temperature sensor
- Internal capacitive humidity sensor
- Temperature measuring range from -20 to +70 °C
- Humidity measuring range from 0 to 100 %RH
- Stores 16,000 measurement value pairs
- USB-C connection for PC data transfer
- Works with testo ComSoft software for programming, analysis and reporting
- Selectable measuring cycle from 1 minute to 24 hours
- Includes wall bracket, CR2032 lithium batteries, USB-C data transfer cable and test report
Technical Specifications
| Product | testo 174 H |
|---|---|
| Part number / MPN | 0572 1741 01 |
| Channels | 2 internal |
| Temperature sensor type | NTC |
| Temperature measuring range | -20 to +70 °C |
| Temperature accuracy | ±0.5 °C (-20 to +70 °C), ±1 digit |
| Temperature resolution | 0.1 °C |
| Temperature adjustment time | t90: 15.8 min; t99: 35 min |
| Humidity sensor type | Testo humidity sensor, capacitive |
| Humidity measuring range | 0 to 100 %RH, not for condensing atmospheres |
| Humidity accuracy | ±3 %RH (2 to 98 %RH); ±0.03 %RH/K; ±1 digit |
| Humidity resolution | 0.1 %RH |
| Humidity adjustment time | t90: 3 min; t99: 30 min |
| Memory | 16,000 measurement value pairs (16,000T + 16,000H) |
| Measuring cycle | 1 min to 24 h |
| Connection | USB-C interface; USB 2.0 connection |
| Software | testo ComSoft Basic; testo ComSoft Professional supported |
| Measurement data export | PDF / XLS / HTML / CSV |
| Battery type | 2 lithium batteries, CR2032 |
| Battery life | 1 year at 15 min measuring cycle and +25 °C |
| Operating temperature | -20 to +70 °C |
| Storage temperature | -40 to +70 °C |
| Operating humidity | 0 to 100 %RH |
| Protection class | IP20 |
| Maximum operating altitude | ≤ 2000 m / 6561 ft above sea level |
| Level of contamination | PD2 |
| EMC environment | Basic electromagnetic environment |
| Dimensions | 60 x 38 x 18.5 mm |
| Weight | 35 g |
| Product colour | White |
| Housing material | Plastic |
| Certification | HACCP International; NSF for white version |
| Use limitations | Not for condensing atmospheres; humidity sensor may not be used in dusty environments; must not come into contact with unpackaged food |
What’s Included
- testo 174 H mini temperature and humidity data logger
- Wall bracket
- 2 x CR2032 lithium batteries
- USB-C data transfer cable
- Test report
