This is why you too need a thermal imager.

thermal imagers
  • Carry out condition-based maintenance work - prevent system breakdowns.
  • Not just for practical measurement - precise assessment of entire areas too.
  • Faster leak location, faster checking of systems and parts of buildings - saving time and therefore money.
  • Quickly check insulation fitting or a heating system’s functional capability and provide impressive evidence for the customer on site.
  • Impress and win new customers with your professionalism thanks to your thermal imager.

The right model for every requirement.


  • testo 865
    • testo 865
  • Switch on, point, know more.
  • Infrared resolution 160 x 120 pixels with testo SuperResolution technology 320 x 240 pixels
  • Thermal sensitivity (NETD) of < 0.1 °C (100 mK)
  • Automatic detection of hot and cold spots
  • testo ScaleAssist for comparable images in building thermography
  • IFOV warner for displaying the measurement spot size
  • testo 868
    • testo 868
  • Smart and networked thermal imaging.
  • Infrared resolution 160 x 120 pixels with testo SuperResolution technology 320 x 240 pixels
  • Thermal sensitivity (NETD) of < 0.08 °C (80 mK)
  • With testo Thermography App for on-site analysis and report generation
  • Automatic detection of hot and cold spots
  • testo ScaleAssist for comparable images in building thermography
  • Integrated 5 MP digital camera
  • IFOV warner for displaying the measurement spot size
  • testo 871
    • testo 871
  • testo 871s: Smart thermography for professional requirements.
  • Infrared resolution 240 x 180 pixels with testo SuperResolution technology 480 x 360 pixels
  • Thermal sensitivity (NETD) of < 0.08 °C (80 mK)
  • With testo Thermography App for on-site analysis and report generation
  • Integration of further measurement parameters via Bluetooth
  • Automatic detection of hot and cold spots
  • testo ScaleAssist for comparable images in building thermography
  • Integrated 5 MP digital camera
  • IFOV warner for displaying the measurement spot size
  • testo 872
    • testo 872
  • Smart thermography with optimum image quality.
  • Infrared resolution 240 x 180 pixels with testo SuperResolution technology 480 x 360 pixels
  • Thermal sensitivity (NETD) of < 0.05 °C (50 mK)
  • With testo Thermography App for on-site analysis and report generation
  • Integration of further measurement parameters via Bluetooth
  • Automatic detection of hot and cold spots
  • testo ScaleAssist for comparable images in building thermography, and IFOV warner
  • Integrated 5 MP digital camera
  • Integrated laser marker – also precisely visible as a measuring point in the thermal image


FOV calculator

The FOV calculator shows you quickly and easily how small the measurement object can be, in order to be recognized (IFOV geo) and reliably measured (IFOV meas) at the selected distance.

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


testo ScaleAssist: Comparable thermal images.

  • 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.

IFOV warner: Measurement spot under control.

  • Illustrates which measurement object can be correctly and precisely measured at which distance
  • This ensures that surrounding objects do not falsify the surface temperature of the targeted object
  • Visualizes all objects that are being measured within a rectangular cursor

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