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Testo 871

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The Testo 871 thermal imager includes Bluetooth and WiFi connectivity to enable you to connect to the Testo thermography app which makes it easier when on site to create and send reports easily and sufficiently. It also offers a high quality 240 x 180 pixel detector and includes the novel Testo ScaleAssist and Testo ε-Assist functions which enable objectively comparable and error-free thermal images to be recorded. 

Product Features

  • Range of accessories
  • Calibration options
  • Document downloads

Instrument product options

1. Select a model (1 available)

Model subtotal: £1,590.00
Total (excl VAT): £1,590.00
Continue to select accessories

2. Select accessories (2 available)

3. Select a calibration (2 available)



  • Infrared resolution 240 x 180 pixels
  • With Testo SuperResolution technology 480 x 360 pixels
  • Thermal sensitivity < 90 mK
  • Integrated digital camera
  • Smartphone/tablet connection via Testo thermography App
  • Wireless measurement data transfer from Testo 770-3 TRMS Clamp Meter and humidity measuring instrument Testo 605i
  • With Testo ScaleAssist and testo ε-Assist


For full technical details, please see the data sheet.

Infrared resolution      240 x 180 pixels

Thermal sensitivity (NETD)      90 mK

Field of view/min. focusing distance      35 ° x 26 ° / < 0.5 m (fixed focus)

Geometric resolution (IFOV)      2.6 mrad

Testo SuperResolution (Pixel/IFOV)      480 x 360 pixels.1.6 mrad

Image refresh rate      9 Hz

Focus      Fixed focus

Spectral range      7.5 to14 μm

Image size / min. focusing distance      at least 3.1 MP / 0.5 m

Image display      8.9 cm (3.5 ") TFT, QVGA (320 x 240 pixels)

Display options      IR image / real image

Colour palettes      4 (iron, rainbow, HC, cold-hot, grey)

WiFi Connectivity      Communication with the Testo Thermography App

Bluetooth1)      Measurement value transfer from thermohygrometer testo 605i, clamp meter testo 770-3 (optional)

USB 2.0 Micro B      4

Measuring ranges      Measuring range 1: - 30 to + 100 °C and measuring range 2: 0 to + 650 °C



Testo 871 thermal imaging camera data sheet

  • Technical Document
  • PDF file
  • 1 MB

Testo 871 thermal imaging camera user manual

  • Technical Document
  • PDF file
  • 2 MB

Testo thermal family data sheet

  • Technical Document
  • PDF file
  • 2 MB
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