Testo 871s Thermal Imaging Camera

  • 240 x 180 pixel thermal sensor with temperature range from -30˚C to 650˚C
  • Bluetooth communication with 770-3 Clamp Meter and 605i Thermohygrometer
  • ScaleAssist range adjustment and automatic ε-Assist emissivity adjustment
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Testo 871s Thermal Imaging Camera

The Testo 871s Thermal Imaging Camera has excellent thermal resolution of 240 x 180 pixels thanks to its advanced IR thermal sensor. Thermal sensitivity of 80mK means that temperature differences of just 0.09˚C can be viewed on screen whilst the temperature measurement range stretches from -30˚C to 650˚C.

A wide field of view (35˚ x 26˚) allows the Testo 871s to look over large areas very quickly and the image on the colour screen is made clearer by automatic ScaleAssist range adjustment and ε-Assist emissivity adjustment. Four different colour palettes provide flexibility for the user and the camera automatically highlights hot and cold spots to give an immediate indication of the distribution of temperature extremes.

Images and video can be saved to the Testo 871s' 2.8GB internal memory and transferred to a PC, tablet or smartphone using a USB cable or the camera’s built-in WLAN module. Smart devices must have the Testo Thermography App (for Android or iOS) installed to communicate with the camera. The app also enables the smartphone/tablet screen to act as a remote screen and opens up further analysis and reporting possibilities. Testo SuperResolution software can even artificially increase resolution to 480 x 360 pixels.

A built-in digital camera takes visual images and video to go alongside thermal images and video when the user comes to analyse his/her results, whether this is on a smart device, PC or the Testo 871 itself. The camera can also work with the Testo 770-3 Clamp Meter and 605i Thermohygrometer to add quantitive information to images via wireless Bluetooth communication, thus enabling more accurate inspections.

The Testo 871s' IP54-rated casing, sturdy design and four-hour battery life mean that it is suitable for use outdoors. A charger is included with the camera alongside a USB cable, ε-markers, a calibration certificate and a case. The manufacturer’s warranty lasts for two years.

Testo 871s vs 871

The 871s has received a number of important upgrades over its predecessor model, the 871. In the latest ’s’ model, you will find an improved thermal sensitivity (90mK vs 80mK) and better user interface for a superior user experience. In addition to this, the visual camera megapixel count has increased from 3.1MP to 5.0MP, delivering clearer imagery.

  Testo 865s Testo 868s Testo 871s Testo 872s
Infrared resolution 160 x 120 pixels (320 x 240 with Super Resolution) 160 x 120 pixels (320 x 240 with Super Resolution) 240 x 180 pixels (480 x 360 with Super Resolution) 320 x 240 pixels (640 x 480 with Super Resolution)
Thermal sensitivity 100mK 80mK 80mK 50mK
Measuring range - 20 to +280 °C -30 to +650 °C -30 to +650 °C -30 to +650 °C
Field of View 31° x 23° 31° x 23° 35° x 26° 42° x 30°
App connection via wireless LAN  
Integrated digital camera  
IFOV warner
Testo ScaleAssist
Testo ε-Assist  
Connection of Testo 605i & Testo 770-3 via Bluetooth    
Laser marker      

Testo part number: 0560 8716

Key Features

  • Thermal resolution: 240 x 180 pixels
  • Thermal sensitivity: 80mK
  • Temperature range: -30˚C to 650˚C
  • Field of view: 35˚ x 26˚
  • Automatic ScaleAssist
  • ε-Assist emissivity adjustment
  • WLAN wireless connectivity to smart device
  • Bluetooth communication with 605i and 770-3
  • IP54-rated casing
  • Manufacturer’s warranty: 2 years

What's In The Box?

  • Testo 871s Thermal Imaging Camera
  • Testo SuperResolution Thermal Imaging Software
  • USB cable
  • Mains unit
  • Lithium ion rechargeable battery
  • Pro software
  • 3 x ε-markers
  • Quick-start guide
  • Short instructions
  • Calibration certificate
  • Case

Infrared image output

  • Infrared resolution: 240 x 180 pixels
  • Thermal sensitivity (NETD): 80 mK
  • Field of view/min. focusing distance: 35° x 26° / < 0.5 m
  • 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

Visual image output

  • Image size / min. focusing distance: At least 5.0 MP / 0.5 m

Image presentation

  • Image display: 8.9 cm (3.5") TFT, QVGA (320 x 240 pixels)
  • Display options: IR image / real image
  • Colour palettes: Iron, rainbow HC, cold-hot, grey

Data interfaces

  • WLAN Connectivity: Communication with the Testo Thermography App
  • Bluetooth(1): Measurement value transfer from thermohygrometer testo 605i, clamp meter testo 770-3 (optional)
  • USB 2.0 Micro B: Yes


  • Measuring ranges: -30 to +100 °C / 0 to +650 °C
  • Accuracy: ±2 °C, ±2 % of measured value
  • Emissivity / reflected temperature compensation: 0.01 to 1 / manual
  • Testo ε-Assist: Automatic recognition of emissivity and determination of reflected temperature (RTC)

Measurement functions

  • Analysis functions: Mean point measurement, hot/cold-spot recognition, Delta T
  • Testo ScaleAssist: Yes
  • IFOV warner: Yes
  • Humidity mode – manual: Yes
  • Humidity measurement with humidity measuring instrument (1): Automatic measurement value transfer of thermohygrometer testo 605i via Bluetooth (instrument must be ordered separately)
  • Solar mode – manual: Input of solar radiation value
  • Electrical mode – manual: Input of current, voltage or power
  • Electrical measurement with clamp meter (1): Automatic measurement value transfer of clamp meter testo 770-3 via Bluetooth (instrument must be ordered separately)

Imager equipment

  • Digital camera: Yes
  • Lens: 35° x 26°
  • Video streaming: Via USB, via wireless LAN with Testo Thermography App
  • Storage as JPG: Yes
  • Fullscreen mode: Yes
  • Image storage File format: .bmt and .jpg; export options in .bmp, .jpg, .png, .csv, .xls
  • Memory: Internal memory (2.8 GB)

Power supply

  • Battery type: Li-ion battery can be changed on-site
  • Operating time: 4 hours
  • Charging options: In instrument/in charging station (optional)
  • Mains operation: Yes

Ambient conditions

  • Operating temperature range: -15 to +50 °C
  • Storage temperature range: -30 to +60 °C
  • Air humidity: 20 to 80 %RH, not condensing
  • Housing protection class (IEC 60529): IP54
  • Vibration (IEC 60068-2-6): 2G

Physical features

  • Weight: 510 g
  • Dimensions (LxWxH): 219 x 96 x 95 mm
  • Housing: PC - ABS

PC software

  • System requirements: Windows 10, Windows 8, Windows 7

Standards, tests, warranty

  • EU directive: EMC 2014/30/EU; RED 2014/53/EU
  • Warranty: 2 years

(1) Wireless permit in EU, EFTA, USA, Canada, Australia, Turkey