Delivery Scope

testo 175-H1 data logger for temperature and humidity measurements, external humidity sensor (NTC/ capacitive humidity sensor), wall bracket, lock, batteries, calibration protocol.

Temperature and humidity data logger - testo 175-H1
Model No: testo 175-H1 Part No: 0572 1754

The testo 175-H1 data logger measures, monitors and logs the temperature and relative humidity to monitor the indoor climate in buildings, storage facilities and archives and help create a comfortable climate in the workplace.

  1. High level of data security
  2. Large, easily legible display
  3. Measurement data memory for 1 million measurement values
  4. Up to 3 years‘ battery life
  5. Data transfer via USB cable or SD card
  6. Permanently installed external capacitive humidity sensor


The testo 175 H1 data logger measures, monitors and logs the temperature and relative humidity in buildings and closed rooms. The 175 H1 can monitor the indoor climate in buildings, storage facilities and archives and help create a comfortable climate in the workplace. 
 
The logger comes with an external humidity sensor (stub) for shorter reaction times and a lock to prevent it from being easily stolen or tampered with. 
 
In addition to the current temperature and humidity values, the logger can also log and display dew point values.  Other information including adjustable threshold values, breached thresholds and remaining battery power can also be read off the large, clear display.  
 
Security and comfort on all levels, The data logger testo 175 H1 ensures a high level of data security and reliable measurements based on leading-edge technology. It has a super-size memory that can save up to 1 million readings and an extended battery life of up to 3 years. This gives you the freedom to read out the data at longer intervals, even when the measuring cycles are shorter. The triple AAA batteries included in the scope of supply can be easily replaced by the user. 
 
Programming and Analyzing the data Loggers  
 
Choose 1 of 3 software versions to program or read out the loggers or to analyze the measuring data you have obtained on your PC: 

  1. Software ComSoft Basic– included – allows you to program your logger and analyze the data quickly and easily 
  2. Software ComSoft Professional– optional – provides you with additional possibilities and a more detailed analysis of the temperature and humidity values 
  3. Software ComSoft CFR 21 Part11– optional – ideal for the special demands of the pharmaceutical sector in compliance with 21 CFR Part 11 

You will need a USB cable (not included in scope of supply) to program your data logger. The data can be transferred to your PC either via USB cable or SD card. Both are optionally available as accessories which can be ordered along with your testo 175 H1.

Temperature - NTC
Measuring range -20 to +55 °C
Accuracy ±0.4 °C (-20 to +55 °C) ±1 Digit
Resolution 0.1 °C
Humidity - Capacitive
Measuring range 0 to 100 %RH*
Accuracy ±2 %RH (2 to 98 ) at +25 °C
Resolution 0.1 %RH
* Not for condensing atmospheres.
Dewpoint (calculated)
Measuring range -40 to +50 °Ctd
Accuracy +0.03 %RH/K ±1 Digit
General technical data
Weight 130 g
Dimensions 149 x 53 x 27 mm
Operating temperature -20 to +55 °C
Product-/housing material Plastic
Protection class IP54
Channels 2 internal
Life-time sensor Long-term drift of the sensor <1% RH / year (ambient temperature + 25 ° C)
Standards EU-guideline 2014/30/EU; 2011/65/EU
Measuring rate 10 s - 24 h
Battery type 3 x AIMn type AAA or Energizer
Battery life 3 years at 15 min. meas. rate, +25 °C
Interface mini usb, SD card slot
Memory 1,000,000 measuring values
Storage temperature -20 to +55 °C

Delivery Scope

Testo 174-H mini data logger, including wall bracket, batteries (2 x CR 2032 lithium) and calibration protocol.

Mini data logger for Temperature and Humidity - testo 174-H
Model No: testo 174-H Part No: 0572 6560

The testo 174-H mini data logger measures and logs the air temperature and relative humidity in storage rooms and offices continuously without interruption accurately and reliably.

  1. Display of current temperature/ humidity value
  2. High data security
  3. Large display
  4. Fast data analysis and documentation on a PC
  5. Waterproof according to IP65
  6. Measurement data memory for 16,000 measurement values
  7. HACCP-compliant and certified according to EN 12830


Testo 174 H mini data logger allows you to monitor temperature and humidity sensitive goods– including foods, archives or metal parts that are susceptible to surface rust – or carry out discreet humidity checks in buildings.

The mini data logger has built-in long life sensors that can measure the temperature and humidity of the surrounding environment, a memory for upto 16,000 measurements and an easy-to-read display that shows the current reading as well as any breached thresholds.
The standard batteries (2x CR 2032) included with the logger can be easily replaced by the user.

Programming and Analyzing the Temperature and Humidity Mini Data Logger - testo 174 H

Choose 1 of 3 software versions to program or read out this mini data logger or to analyze the measuring data you have obtained on your PC:

  1. Software ComSoft Basic– included – allows you to program the logger and analyze the data quickly and easily
  2. Software ComSoft Professional– optional – provides you with additional possibilities and a more detailed analysis of the temperature and humidity values
  3. Software ComSoft CFR 21 Part11– optional – ideal for the special demands of the pharmaceutical sector in compliance with 21 CFR Part 11
Temperature - NTC
Measuring range -20 to +70 °C
Accuracy ±0.5 °C (-20 to +70 °C)
Resolution 0.1 °C
Humidity – Capacitive (testo 174H)
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
Weight 34 g
Dimensions 60 x 38 x 18.5 mm
Operating temperature -20 to +70 °C
Product-/housing material Plastic
Protection class IP20
Channels 2 internal
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

Delivery Scope

testo 176 H1 with external probe connections (NTC/capacitive humidity sensor), including wall bracket, battery and calibration protocol

Temperature and humidity data logger (4-Channel) - testo 176-H1
Model No: testo 176-H1 Part No: 0572 1765

Testo 176-H1 4-channel data logger allows the monitoring of temperature and humidity in warehouses and buildings. With the testo 176 H1, you can examine whether mould in a house or apartment has been caused by insufficient ventilation or by building damage

  1. Record up to two humidity and temperature values simultaneously with optionally connectable probes
  2. Ideal for long-term measurement: large memory for up to 2 million measurement values, 8 years battery life
  3. Continuous measurement and documentation of temperature, relative humidity and dewpoint
  4. Different software available for data evaluation on PC


Testo 176 H1 data logger for temperature and humidity guarantees high data security and reliable measurement results on the basis of modern measurement technology.

In addition to the current temperature and humidity values, the data logger testo 176 H1 also shows the dewpoint in the display (when a temperature/humidity probe is connected). You can read programmed limit values, min. and max. values, limit value violations as well as the remaining battery life easily from the large display. It is therefore not necessary to read out the temperature and humidity logger to a PC in order to gain a quick overview.

Thanks to the large memory for 2 million measurement values, and the battery lifetime of up to 8 years, you can read out the data much less often, even at a shorter measurement intervals. The standard battery (AA) can be easily exchanged at any time by the user.

Programming and evaluation of the data logger for temperature and humidity

For the programming and readout of the data logger for temperature and humidity, as well as for the analysis of the measurement data on a PC, three software versions are available.

  1. ComSoft Basic software – available for free download – allows fast programming of the data logger as well as easy data analysis.
  2. ComSoft Professional software– optionally available – offers you different possibilities for the detailed analysis of temperature and humidity values
  3. ComSoftCFR 21 Part 11 software– optionally available – optimum for the special requirements of the pharmaceutical sector according to CFR 21 Part 11

To program the temperature and humidity data logger, you require a USB cable which is not included in delivery. Transfer of the saved measurement data from the data logger to a PC takes place by USB cable or SD card – you can order both as optional accessories along with your testo 176 H1

Temperature - NTC
Measuring range -20 to +70 °C
Accuracy ±0.2 °C (-20 to +70 °C) ±1 Digit ±0.4 °C (Remaining Range) ±1 Digit
Resolution 0.1 °C
Humidity - Capacitive
Measuring range 0 to 100 %RH*
Accuracy dependent on probe selected
Resolution 0.1 %RH
General technical data
Protection class IP65
Channels 4 external
Connectable probes 2 x NTC temperature probe or 2 x humidity probe
Measuring rate 1 s to 24 h; 2 s to 24 h (online measurement)
Battery type 1 x Lithium (TL-5903)
Battery life 8 years at 15 min. meas. rate, +25 °C
Interface mini usb, SD card slot
Memory 2,000,000 measuring values

Delivery Scope

testo 176 H2 climate data logger for humidity/temperature with connections for 2 external sensors (NTC/capacitive humidity sensor) including wall bracket, lock, batteries and calibration protocol

Humidity Data Logger (4-Channel and Metal Housing) - testo 176-H2
Model No: testo 176-H2 Part No: 0572 1766

Testo 176 H2 with metal housing climate data logger protects it against mechanical impacts. Data logging of temperature and humidity can be done even in harsh environmental conditions.

  1. Robust metal housing and protection against dust and water jets in compliance with protection class IP 65
  2. Memory for up to 2 million readings, up to 8 years' battery life
  3. Measures humidity and temperature on two channels thanks to its two connections for external sensors
  4. Measurement data analysis on the PC, basic software 


Testo 176 H2 is the perfect data logger for analyzing precise climatic development using long-term measurements. Two external humidity/temperature probes, which you can order when you purchase the climate data logger, can be attached to it. With this, data logging of temperature and humidity at two different points simultaneously becomes possible.

With its large measurement data memory (up to 2 million readings can be recorded) and its long battery life (up to 8 years), this temperature & humidity data logger is the ideal instrument for the long-term recording of climate data.

Safety and convenience at all levels

Thanks to its robust metal housing, the climate data logger is protected against hard impacts and will maintain its durability even in harsh environmental conditions. Moreover, it conforms to protection class IP 65 and can therefore be exposed to water jets and dust. This is particularly handy if cleaning is undertaken at the measuring location, because this means that the data logger does not need to be removed. The data logger will not sustain any damage even in dusty or dirty conditions.

This climate data logger makes the security of your measurement data top priority. As soon as you start a measurement program and values for temperature and humidity are stored in the data logger, these will never be lost again. Even when the battery is spent or replaced, the data in the testo 176 H2 remains fully available.

Standard AA batteries are provided for the data logger power supply. If a battery is spent, you can change this yourself.

Programming and analysis of the climate data logger

The data logger can be programmed and read off, and the measurement data analyzed on the PC using a software package. We offer three different software versions:

  1. ComSoft Basic software – available for free download – offers you quick programming of the climate data logger and easy analysis of the measurement data
  2. ComSoft Professional software – also available – offers you various options for analyzing the measured temperature and humidity values
  3. ComSoft CFR 21 Part 11 software – also available – is suitable for use in the pharmaceutical industry with its special requirements according to CFR 21 Part 11
  4. The climate data logger can only be programmed using a USB cable, which is not included in the delivery. The values measured can also be transmitted to the PC via the USB cable, or optionally also using an SD card. Both the cable and the card are available to order as optional accessories.
     
Temperature - NTC
Measuring range -20 to +70 °C
Accuracy ±0.2 °C (-20 to +70 °C) ±1 Digit ±0.4 °C (Remaining Range) ±1 Digit
Resolution 0.1 °C
Humidity - Capacitive
Measuring range 0 to +100 %RH*
Accuracy dependent on selected probe
Resolution 0.1 %RH
General technical data
Protection class IP65
Channels 4 external
Connectable probes 2 x humidity probe
Measuring rate 1 s to 24 h; 2 s to 24 h (online measurement)
Battery type 1 x Lithium (TL-5903)
Battery life 8 years at 15 min. meas. rate, +25 °C
Interface mini usb, SD card slot
Memory 2,000,000 measuring values

Delivery Scope

testo 176 P1, 5-channel pressure data logger with internal pressure sensor (absolute pressure) and external probe connections (NTC/ capacitive humidity sensor). Including wall bracket, battery and calibration protocol

Temperature, Humidity and Absolute Pressure Data Logger - testo 176-P1
Model No: testo 176-P1 Part No: 0572 1767

When ambient conditions, for example in a laboratory, need to be documented securely and highly accurately, the testo 176 P1 is the right data logger. It has an integrated absolute pressure sensor and connection possibilities for two external temperature/humidity probes (optional)

  1. Continuous measurement and documentation of absolute pressure
  2. Two optionally connectable probes for humidity and temperature values
  3. Large measurement data memory for up to 2 million measurement values
  4. Software for data evaluation on a PC


Pressure data logger testo 176 P1 has an integrated sensor which measures absolute pressure precisely in the range from 600 mbar up to 1100 mbar.

Up to two temperature/humidity probes can be additionally connected to the 5-channel pressure data logger testo 176 P1. A wide selection of probes is available to you for this purpose.

The lock included in delivery protects your loggers from unauthorized access.

Security and convenience at all levels
The testo 176 P1 data logger for absolute pressure, temperature and humidity guarantees high data security and reliable measurement results on the basis of modern measurement technology.

When temperature/humidity probes are connected, the data logger also shows the dewpoint in the display, in addition to the current measurement values. You can read programmed limit values, min. and max. values, limit value violations as well as the remaining battery life easily from the large display. It is therefore not necessary to read out the data logger to a PC in order to gain a quick overview.

Thanks to the large memory for 2 million measurement values, and the battery lifetime of up to 8 years, you can read out the data much less often, even at a shorter measurement intervals. The standard battery (AA) can be easily exchanged at any time by the user.

Programming and evaluation of the data logger

For the purposes of programming and readout of your data logger, as well as the evaluation of the measurement data on a PC, you can choose between three software versions:

  1. ComSoft Basic software – available for free download – for the fast programming of the data logger as well as easy data analysis.
  2. ComSoft Professional software – optionally available – offers you different possibilities for the detailed analysis of absolute pressure, temperature and humidity values
  3. ComSoft CFR 21 Part 11 software – optionally available – optimum for the special requirements of the pharmaceutical sector according to CFR 11 Part 11

To program this pressure data logger, you require a USB cable which is not included in delivery. Transfer of the saved measurement data from the data logger to a PC can also take place by USB cable or by an SD card. You can order both as optional accessories.

Temperature - NTC
Measuring range -20 to +70 °C
Accuracy ±0.2 °C (-20 to +70 °C) ±1 Digit ±0.4 °C (Remaining Range) ±1 Digit
Resolution 0.1 °C
Humidity - Capacitive
Measuring range 0 to 100 %RH*
Accuracy dependent on probe selected
Resolution 0.1 %RH
Absolute Pressure
Measuring range 600 to 1100 mbar
Accuracy ±3 mbar (0 to +50 °C) ±1 Digit
Resolution 0.1 mbar
General technical data
Protection class IP54
Channels 4 external; 1 internal
Connectable probes 2 x NTC temperature probe or 2 x humidity probe
Measuring rate 1 s to 24 h; 2 s to 24 h (online measurement)
Battery type 1 x Lithium (TL-5903)
Battery life 8 years at 15 min. meas. rate, +25 °C
Interface mini usb, SD card slot
Memory 2,000,000 measuring values
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