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Testo 875-1i

"High quality & affordable investigative tool for HVAC professionals."

The Testo 875-1i Thermal Camera is a powerful investigative tool that can be used to quickly and reliably detect thermal anomalies.

The 875-1i Thermal Imager is affordable and highly suited to a wide range of professional applications making it perfect for the heating engineer looking to utilise the power of thermal imaging. With a thermal resolution of <50 mK, laser pointer and integrated digital camera, this thermal imager allows you to quickly discover weak spots and assess energy efficiency in buildings.

Simply point the thermal camera in the direction of your target and a thermal image will be displayed in 160 x 120 pixel resolution directly onscreen complete with temperature readings, allowing you to quickly identify any problem areas. Complete with automatic hold and cold spot recognition and a large temperature range, the Testo 875 Thermal Camera is fully equipped for detecting air leaks, heat loss and moisture when performing building diagnostics.

The 875-1i Thermal Imaging Camera is a valuable diagnostic tool particularly within the HVAC industry where it is frequently used to trace heating system pipe work, assessing radiator performance and checking under floor heating.

160 x 120 Thermal camera resolution
160 x 120 Pixel Resolution
With 19200 points temperature measurement, the measurement objects are detected in very good image quality, clearly and precisely.
<50mK Thermal Sensitivity
Thermal Sensitivity <50 mK 
Thanks to an excellent temperature resolution of <50 mK, even small temperature differences are visible.
Laser Pointer to assist with identification
Built-in Digital Camera & Laser Pointer
Integrated digital camera and laser pointer assists with locating hot or cold spots, temperature anomalies and associating them with the real target.
Automatic Hot & Cold spot recognition
Automatic Hot / Cold Spot Recognition 
Critical temperature stati are displayed directly using the automatic hot-cold spot recognition.
Solar Fashion
Solar Fashion 
For each measurement, the sun irradiation can be entered into the value camera. This value is stored for each thermal image.
Super Resolution Super Resolution Technology (optional extra)
For an extra £250 you can increase the thermal resolution by four times, resulting in a 320 x 240 pixel resolution and a huge improvement in thermal image quality, detail and accuracy.


  • IR resolution: 160 × 120 pixels (19200 Pixels)
  • Field of view (FOV): 32° × 23°
  • Image frequency: 33Hz
  • Thermal sensitivity/NETD: < 0.80mK
  • Temperature range: -20°C to +350°C
  • Battery type: Rechargeable Li Ion battery

Measurement ResolutionTesto 875-1i Technical specifications

  • Testo 875-1i Thermal Camera
  • Hard Carry Case for safe transportation
  • Pro Software
  • Soft Case
  • Carrying Strap
  • SD card
  • USB cable Download Cable
  • Lens Cleaning Cloth
  • Mains unit
  • Li-Ion rechargeable battery 
  • Tripod adaptor
  • User Manual
  • 24 month warranty 

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