Temperature measuring instrument for thermocouples type K, Testo 925

With the compact testo 925 temperature measuring instrument (TC type K, 1 probe included) you have a versatile solution for simple, fast and precise temperature measurements in industry and trade. The testo Smart App supports you with useful functions such as configuration, display (also as a second screen) and storage as well as documentation of the measured values directly in the app.

Key product features:

  • Easy, fast and precise temperature measurement with K-type thermocouple probe (1 K-type TC probe included)
  • Quick setup in the app, graph history, second screen and measurement data storage in the testo Smart App
  • Wide range of applications thanks to the large measuring range from -50°C to 1000°C
  • Large selection of probes, optional and compatible with existing universal type K TC sensors

Hardly any other measured value is measured as often on a daily basis as temperature. The quality of products, processes or raw materials depends on it, as does the efficiency of plants. That's why it's all the more important that you have a compact temperature measuring instrument at hand that shows you what you need to know in a simple, quick and precise way. The testo 925 is such a measuring instrument.

It stands out not only for its large measuring range (-50 to +1000 °C), but also for its robustness and intelligent operation via mobile app. One type K thermocouple probe is included. The testo 925 thermometer is also compatible with other available Type K TC probes. testo Smart App. supports you in working with the testo 925 with the following practical functions:

  • Configuration of your measuring instrument
  • Graphical display of measured values
  • Recording of measurement data
  • Customer and measurement point management
  • Documentation of your work
  • Sending measurement reports via e-mail

Set contains:

  • Testo 925, 1-channel temperature measuring instrument, works with TC Type K, works with a mobile application, with an audible alarm function
  • Transport bag
  • 1 x TC Type K probe
  • Calibration protocol
  • 3 x AA batteries

Technical data:

General technical data:


188 g


135 x 60 x 28 mm

Working temperature:

-20 to +50 °C

Housing material:


Security class:

IP40; IP65 with TopSafe

Battery type:

3x AA

Battery life:

150 h

Storage temperature:

-20 to +50 °C

Temperature measurement - Type K (NiCr-Ni)

Measurement range:

-50 do +1000 °C


±(0,5 + 0,3 % of mv) (-50 to +1000 °C)


0,1 °C (-50 to +499,9 °C)

1 °C (remaining range)

0563 0925

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