testo 176H1 - Four-channel humidity and temperature data logger

Order-Nr.  0572 1765

  • Record up to two humidity and temperature values simultaneously with optionally connectable probes

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

  • Easy-to-change battery

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

  • Convenient Excel export functions

  • Three software versions available for data management on the PC, basic software available as a free download

The testo 176H1 humidity and temperature measurement logger has a large display that makes it ideal for the monitoring of temperature and humidty in enviro chamber and storage rooms. The 176H1 is a RH and temperature data logger with external NTC humidity and temperature sensor connections. 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 176H1 RH and temperature data logger is an ideal data logger for the monitoring of temperatures and humidity.
  • Data logger with external NTC sensor connections
  • Data transfer possible using the USB port, or SD card (optional)
  • Easy to read large display that shows current reading
  • 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 176H1 humidity and temperature measurement logger with external NTC sensor connections, 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 probe selected


0.1 %rH

*Not for condensing atmospheres.

General technical data


7.76 oz. / 220 g


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

Operating temperature

-4° to 158 °F / -20 to +70 °C



Protection class



4 external

Product colour


Connectable probes

2 x NTC temperature probe or 2 x humidity probe


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

Air Probes

Humidity / Temperature Probe


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.