testo 175H1 - Temperature and humidity data logger

Order-Nr.  0572 1754

$ 406.80
excl. tax 
Delivery time: 1 working days
  • Professional software with Excel export function for programming the logger and data analysis

  • Round-the-clock monitoring and logging of temperature, relative humidity and dew point

  • Temperature measuring range from -20 °C to +70 °C

  • Automatic measuring data backup when the battery runs out or is changed

  • Transfer of measuring data via SD card

  • Displays violations of limit values

The testo 175H1 temperature and humidity data logger features a large display and alarm indication that makes it ideal for continuous monitoring of ambient temperature and humidty. The 175H1 has an external, stub type humidity sensor, making it best-suited for use in high humidity areas. Creation of Excel Spreadsheets, PDFs, and data analysis are all easily achieved with the free, downloadable ComSoft software.


Professional software with Excel export function for programming the logger and data analysis.


Product Description

The testo 175H1 is an ideal data logger for the continuous monitoring of ambient temperatures and humidity. With its customizable alarm, the 175H1 will alert when user defined thresholds have been exceeded.
  • Internal thermistor for temperature and capacitive humidity sensor
  • Data transfer possible using the USB port, or SD card (optional)
  • Easy to read large display that shows current reading and exceeded measurement limits
  • IP54 proection class
  • Capable of CFR 21 Part 11 Compliancy
  • Free data logger software available for download
  • Data is secured within the logger, and can be password protected using ComSoft
  • Includes lockable wall mount to prevent theft or tampering
Please note: The testo 175H1 temperature measurement logger requires an interface to use the free data logger software. One interface can be used for multiple instruments..

Delivery Scope

testo 175H1 temperature data logger, batteries, wall mount, lock, and certificate of conformity

Technical Data

Temperature - NTC

Measuring range

-4° to 131 °F / -20 to +55 °C


±0.7 °F (-4° to 131 °F) ±1 Digit / ±0.4 °C (-20 to +55 °C) ±1 Digit


0.1 °F / 0.1 °C

Humidity - Capacitive

Measuring range

0 to 100 %rH*


±2 %rH (2 to 98 %rH at 77.0 °F / ±2 %RH (2 to 98 %RH) at +25 °C

±0.03 %rF/K ±1 Digit

< ±1 %rH / year drift at +77 °F / < ±1 %RH / year drift at +25 °C


0.1 %rH

* Not for condensing atmospheres.

Dewpoint (calculated)

Measuring range

-40° to 50 °Ctd


0.0 %rF/K

General technical data


4.59 oz. / 130 g


6 x 2 x 1 in. / 149 x 53 x 27 mm

Operating temperature

-4° to 131 °F / -20 to +55 °C



Protection class



2 internal

Product colour


Life-time sensor

Long-term drift of the sensor <1% RH / year (ambient temperature + 25 ° C)


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


mini usb, SD card slot


1,000,000 measuring values

Storage temperature

-4° to 131 °F / -20 to +55 °C



USB connection cable

Order Number: 0449 0047

$ 23.00
excl. tax
Wall holder

Order Number: 0554 1702

ComSoft Professional 4

Order Number: 0554 1704

ComSoft CFR 21 Part 11

Order Number: 0554 1705


Monitoring and documentation of building air conditioning

Temperature and relative humidity are crucial factors in assessing air quality and levels of comfort in indoor spaces, e.g. in workplaces. With the aid of data loggers, this data can be permanently monitored and documented.
They are also excellently suited to the monitoring of ventilation systems or for assessing existing building moisture.
With the use of special software, the measurement configurations can be customised and recorded measurement data can be both analysed and stored.

Monitoring and documentation of the storage temperature and humidity

The proper observance of storage temperature and humidity is an important prerequisite for the quality control of many products; e.g. in the area of food and pharmaceutical products.
To this end data loggers are usually used. They monitor and document the course of ambient conditions automatically, thereby contributing significantly to verifying that product quality is being maintained.
The direct display of violations of limit values allows fluctuations in temperature and humidity to be responded to fast. With the aid of the configuration and read out software, custom measurement configurations can also be made and recorded measurement data can be both analysed and stored.

Monitoring and documentation of the transportation temperature and humidity

The smooth recording and documentation of measurement data plays a significant role for all products that are sensitive to temperature and humidity fluctuations, or which need to be stored in a predesignated area.
The wrong conditions during transportation can result in major losses in quality right through to a complete loss of value for the monitored products.
With the aid of a data logger, goods in transit can be monitored to make sure specified temperature and humidity zones are being observed; this can then be read out, analysed and stored using special software.

$ 406.80
excl. tax 
Delivery time: 1 working days