Far Away. Yet Connected- All NEW Thermal Imagers

thermal imagers
  • Best-in-class image quality and high resolution up to 320 X 240 pixels.
  • Transfer live images from thermal imager to smart phone or tablet through Bluetooth
  • Transfer the measurement values to testo 605i hygrometer and the clamp meter testo 770-3 wirelessly to the thermal imager.
  • Create and send compact reports on site with the testo Thermography App.
  • Automatic setting of emissivity with testo ɛ-Assist function.
  • Objectively comparable images with testo ScaleAssist function.
  • Other tools like IFOV warner for improved analysis of details on site.

How to contact us.

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We're happy to help you.

The right model for every requirement.

testo 865: Switch on, point, know more.

testo 865: Switch on, point, know more.
  • 160 x 120 pixels:
    To get started in thermography
  • Temperature differences: from 0.12°C
  • Automatically detects hot and cold spots

testo 868: Smart and networked thermal imaging.

testo 868: Smart and networked thermal imaging.
  • 160 x 120 pixels
    + integrated digital camera
  • Temperature difference: from 0.10°C
  • Including Thermography App for more flexible work and sending reports on site

testo 871: Smart thermography for professional requirements.

testo 871: Smart thermography for professional requirements.
  • 240 x 180 pixels
    + digital camera and App
  • Temperature difference: from 0.09°C
  • Connection to: testo 605i thermohygrometer/ testo 770-3 clamp meter

testo 872: Smart thermography with the highest quality images.

testo 872: Smart thermography with the highest quality images.
  • For professionals: 320 x 240 pixels
    + digital camera, App and laser marker
  • Temperature difference: from 0.06°C
  • Connection to: testo 605i thermohygrometer/ testo 770-3 clamp meter


You can generate accurate thermal images really easily with these functions.


testo ScaleAssist: Comparable thermal images.

Image without Scale Assist
Image with Scale Assist
  • Structural defects and thermal bridges can easily be assessed.
  • The thermal image scale with automatic optimal setting prevents misinterpretations.
  • Unwanted extreme temperatures are automatically filtered out.
  • Only structural defects that are actually present are presented as such.
  • Infrared images can be reliably compared, for example with before and after shots.

testo ε-Assist: Set emissivity automatically.

Attach testo ε - marker and record the object with the digital camera in the thermal imager.
ε and RTC are automatically determined.
Precise thermography of object.

testo ε-Assist automatically sets emissivity (ε) and reflected temperature (RTC) – for accurate thermal images.

This is how it works:

  1. Attach testo ε - marker and record the object with the digital camera in the thermal imager.
  2. ε and RTC are automatically determined.
  3. Precise thermography of object.

testo Thermography App: Smart and networked work.

Images-Product-Image-2000x1500.jpg
  • Create concise reports quickly, save online and send by e-mail
  • Add in additional measuring points, establish temperature profile via a curve and add comments
  • Transmit thermal images live to smartphones/tablets and use these as a second display

testo Thermography App for testo 868 / testo 871 / testo 872

  • Download now free of charge for iOS or Android





Connectivity with testo 605i and testo 770-3.

Connectivity with testo 605i and testo 770-3
  • Wireless connection of the thermal imager to the testo 605i thermohygrometer and testo 770-3 clamp meter
  • Transmission of readings via Bluetooth
  • Fast detection of damp spots in buildings or the load of a switching cabinet