Testo 174 H

Temperature and Humidity Mini Data Logger

The Testo 174 H allows you to monitor temperature and humidity-sensitive goods – including foods, archives, or metal parts susceptible to surface rust – or carry out discreet humidity checks in buildings to ensure that the tenants are properly looking after the property.

The Testo 174 H mini data logger has built-in long-life sensors that can measure the temperature and humidity of the surrounding environment, a memory for up to 16 000 measurements, and an easy-to-read display that shows the current reading as well as any breached thresholds.

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  • Features
  • Delivery Scope
  • Specification
  • Resources
  • Software
  • Video
  • Case Study
  • Memory for up to 16 000 temperature and humidity measurements
  • Longlife humidity sensor for reliable and accurate measurements
  • Easy data transfer via USB cable, practical data analysis, and logging on PC
  • Free software download (ComSoft Basic)

testo 174H temperature and humidity mini data logger, wall bracket, 2 x CR 2032 lithium batteries, calibration protocol.


Temperature – NTC
Measuring Range -20 to +70 °C
Accuracy ±0.5 °C (-20 to +70 °C)
Resolution 0.1 °C
Humidity – Capacitive
Measuring Range 0 to 100 %RH*
Accuracy ±3 %RH (2 to +98 %RH) at +25 °C

±0.03 %RH/K ±1 Digit

Resolution 0.1 %RH
* Not for condensing atmospheres.
General technical data
Weight 34g
Dimensions 60 x 38 x 18.5 mm
Operating temperature -20 to +70 °C
Product-/housing material Plastic
Protection class IP20
Channels 2 internal
Product Black
Standards 2011/65/EU; EU-guideline 2014/30/EU
Measuring rate 1 min – 24 h
Battery type 2 x 3V button cell (CR 2032)
Battery life 1 year (15 min measuring cycle, +25 °C)
Memory 16,000 measuring values
Storage temperature -40 to +70 °C

You can choose between three software versions for programming and reading your data logger and for analyzing the measurement data on the PC:

ComSoft Basic software – available as a free download – for fast programming of the temperature data logger and easy data analysis
ComSoft Professional software – can also be ordered as an option – offers a variety of possibilities for detailed analysis of temperature readings
ComSoft CFR 21 Part 11 software – can also be ordered as an option – the best solution for special requirements according to CFR 21 Part 11 in the pharmaceutical sector

You need a USB interface for programming and reading the mini temperature data logger.

Monitoring and documentation of building climate

Temperature and relative humidity are crucial factors when it comes to assessing air quality and comfort levels in indoor areas, e.g. in workplaces. Both values can be monitored and documented over the long term using data loggers.

They are also very well suited for checking ventilation systems or for assessing any building moisture which occurs.

The use of special software means measurement configurations can be carried out individually and recorded measurement data can be both analyzed and archived.

Have a Testo Data Logger in Mind?


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