testo 176H2 - Four-channel humidity and temperature data logger

Order-Nr.  0572 1766

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

  • Measure humidity and temperature on two channels thanks to its two connections for external sensors

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

  • Robust metal housing and protection against dust and water jets in compliance with protection class IP 65

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

  • Displays violations of limit values

The testo 176H2 RH and temperature measurement logger has a rugged metal housing that makes it ideal for extremely cold or dusty environments. The 176H2 is a humidity and temperature data logger that does parallel temperature and humidity measurements with external NTC temperature and humidity probes. Creation of Excel Spreadsheets, PDFs, and data analysis are all easily achieved with the free, downloadable ComSoft software.

This meter uses a sensor to start up.

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Product Description

The testo 176H2 humidity and temperature data logger is an ideal data logger for the monitoring of temperatures and humidity.
  • External NTC sensor connections
  • Data transfer possible using the USB port, or SD card (optional)
  • Rugged metal housing making it ideal for extremely cold or dusty environments
  • IP65 protection 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


Delivery Scope

testo 176H2 parallel humidity and temperature measurement logger, batteries, certificate of conformity
Temperature - NTC

Measuring range

-4° to 158 °F / -20 to +70 °C


±0.4 °F (-4° to 158 °F) ±1 Digit / ±0.2 °C (-20 to +70 °C) ±1 Digit

±0.7 °F (Remaining Range) ±1 Digit / ±0.4 °C (Remaining Range) ±1 Digit


0.1 °F / 0.1 °C

Humidity - Capacitive

Measuring range

0 to +100 %rH*


dependent on selected probe


0.1 %rH

* Not for condensing atmospheres

General technical data


15.17 oz. / 430 g


4 x 2 x 1 in. / 103 x 63 x 33 mm

Operating temperature

-4° to 158 °F / -20 to +70 °C


Metal housing

Protection class



4 external

Connectable probes

2 x humidity probe

Product colour



EU-guideline 2014/30/EU; 2011/65/EU

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


mini usb, SD card slot


2,000,000 measuring values

Storage temperature

-40° to 185 °F / -40 to +85 °C


Humidity / Temperature Probe 12mm

Order Number: 0572 6172

Humidity / Temperature Probe 4 mm

Order Number: 0572 6174


USB connection cable

Order Number: 0449 0047

$ 39.00
excl. tax
Wall holder

Order Number: 0554 1703

ComSoft Professional 4

Order Number: 0554 1704

ComSoft CFR 21 Part 11

Order Number: 0554 1705

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.