testo 174 H - Mini temperature and humidity data logger kit

Order-Nr.  0572 0566

  • Simple and large easy to read display

  • Includes USB interface for data transfer

  • Large measurement data memory capable of storing 16,000 temperature and humidity readings

  • Longlife NTC thermistor temperature and humidity sensor for reliable and accurate measurements

The testo 174H mini temperature and humidity data logger has a large display and alarm indication that makes it capable of monitoring air temperature and relative humidity levels at all times. This temperature and RH measurement logger is long lasting for continuous use and has a high accuracy. The 174H mini temperature and humidity data logger kit includes a USB interface for data transfer and has free software available as a download for easy analysis.
**CFR 21 Part 11 compliant**

Product Description

The testo 174T is an ideal logger for the continuous monitoring of temperatures and humidity. The 174T has clear indicaions of when humidity and temperature thresholds have been exceeded. 

  • High accuracy NTC thermistor sensor for reliable measurement data of temperature and humidity
  • Easy to read large display that shows current reading and exceeded measurement limits
  • IP65 proection class
  • HACCP compliant

Please note: One USB interface for data transfer can be used for multiple instruments.


Delivery Scope

testo 174H temperature and RH measurement logger, USB interface for data transfer

Temperature - NTC

Measuring range

-4° to 158 °F / -20 to +70 °C


±0.9 °F (-4° to 158 °F / ±0.5 °C (-20 to +70 °C)


0.1 °F / 0.1 °C

Humidity - Capacitive

Measuring range

0 to +100 %rH*


±3 %rH (2 to 98 %rH) at 77 °F / ±3 %RH (2 to +98 %RH) at +25 °C

±0.03 %rF/K ±1 Digit


0.1 %rH

* Not for condensing atmospheres.

General technical data


0,1 oz. / 34 g


2 x 1 x 0.7 in. / 60 x 38 x 18.5 mm

Operating temperature

-4° to 158 °F / -20 to +70 °C



Protection class



2 internal

Product colour



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)


16,000 measuring values

Storage temperature

-40° to 158 °F


ComSoft Professional 4

Order Number: 0572 1704

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 analysed and archived.

Monitoring and documentation of storage temperature and humidity

Correct compliance with storage temperature and humidity is an important prerequisite for the quality assurance of many products, e.g. in the area of food and pharmaceutical products.
As a general rule, data loggers are used to do this. They automatically check and document the profile of the ambient conditions and thus make a crucial contribution to verifiable preservation of product quality.

Viewing breaches of limit values directly on the display means you can respond quickly to temperature and humidity deviations. In addition, with the help of the configuration and read-out software, customer-specific measurement configurations can be carried out and recorded measurement data can be both analysed and archived.

Monitoring and documentation of transport temperature and humidity

For all goods which react sensitively to temperature and humidity fluctuations or have to be stored within a predefined range, uninterrupted measurement data recording and documentation play a major role.
Incorrect conditions during transport can lead to major losses of quality, including the total loss of value of the products that require monitoring.

Using a data logger, shipments can be checked for compliance with the specified temperature and humidity ranges and the data can then be read, analysed and archived by means of special software.