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Testo 871 Thermal Imager with App
  • Testo 871 Thermal Imager with App
  • Testo 871 Thermal Imager with App

Testo 871 Thermal Imager with App

Testo Approved distributor and service company.

Includes: testo 871 thermal imager with radio module for Bluetooth/WLAN, USB cable, mains unit, lithium-ion rechargeable battery, pro software IRSoft (free download), 3 x testo ε-Markers, commissioning instructions, short instructions, calibration protocol and case.

0560 8712
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Its high-quality pixel detector, an integrated digital camera and, last but not least, the innovative functions are the features that impress. The testo Thermography App enables the testo 871 to offer smart thermography to meet professional requirements in industry and trade. The case supplied with the thermal imager means it can be conveniently transported, so it is always there for you when needed.

Detect leaks, pinpoint thermal bridges, discover structural defects, identify overheated connections or assess mould damage. The Testo 871 thermal imager is ideal for applications in daily maintenance and installation work in trade and industry. Quick, simple and reliable for maintenance and detection of defects.

The Testo 871 thermal imager communicates wirelessly via WLAN with your mobile terminal devices. The testo Thermography App for iOS and Android offers you the possibility of writing and sending reports on site, as well as saving them online, and of using your smartphone or tablet as a second display or for remote control.

testo ε-Assist

For precise thermal images, it is important to set the emissivity (ε) and the reflected temperature of the object being examined in the imager. Previously, this was complicated, and with regard to the reflected temperature, less than accurate. This changes with testo ε-Assist: Simply attach one of the reference stickers included in delivery to the measurement object. Via the integrated digital camera, the thermal imager recognises the sticker, determines the emissivity and reflected temperature and sets both values automatically.

testo ScaleAssist

Since the temperature scale and colouring of thermal images can be adapted individually, it is possible that the thermal behaviour of a building, for example, can be wrongly interpreted. The testo ScaleAssist function solves this problem by adjusting the colour distribution of the scale to the interior and exterior temperature of the measurement object and the difference between them. This ensures objectively comparable and error-free thermal images.

For even more meaningful thermal images, the thermal imager also wirelessly integrates the measurement values of the clamp probe testo 770-3 as well as the thermohygrometer testo 605i (both available as an option).


Very good image quality due to high resolution.
Detecting temperature differences from 0.09°C.
Write reports on site, save them online and send them by e-mail using the App.
Wireless communication thanks to Bluetooth.
Built-in digital camera generates a real image in parallel to the thermal image.
Critical temperature conditions are directly displayed via automatic hot-cold spot recognition.
Pro software for image evaluation on the PC.
You can choose to save thermal images as JPEGs.

Testo 865 - 872 Product Video

Testo 871 Specifications
Infrared Image Output
FocusFixed focus.
Infrared resolution240 x 180 pixels.
Image refresh rate9 Hz.
SuperResolution (IFOV)1.6 mrad.
SuperResolution (Pixel)480 x 360 pixels.
Geometric resolution (IFOV)2.6 mrad.
Minimum focus distance<0.5 m.
Field of view35° x 26°.
Thermal sensitivity90 mK.
Spectral range7.5 to 14 µm.
Image Output Visual
Minimum focus distance0.5 m.
Image sizeat least 3.1 MP.
Image presentation
Display optionIR image / real image.
Colours4 (iron, rainbow, cold-hot, grey).
Display type8.9 cm (3.5") TFT, QVGA (320 x 240 pixels).
Reflected temperatureManual.
testo ε-AssistIncluded.
Measuring range-30 to +100° C; 0 to +650° C.
Accuracy±2 °C, ±2 % of mv.
Emissivity0.01 to 1.
Measuring function
Solar mode – manualInput of solar radiation value.
Analysis functionMean point measurement, hot/cold-spot recognition, Delta T.
Humidity measurement with humidity measuring instrumentAutomatic measurement value transfer of thermohygrometer testo 605i via Bluetooth (instrument must be ordered separately); Wireless permit in EU, EFTA, USA, Canada, Australia, Turkey.
testo ScaleAssistIncluded.
Humidity mode - manualIncluded.
IFOV warnerIncluded.
Electrical mode - manualInput of current, voltage or power.
Electrical measurement with clamp meterAutomatic measurement value transfer of clamp meter testo 770-3 via Bluetooth (instrument must be ordedered separately); Wireless permit in EU, EFTA, USA, Canada, Australia, Turkey.
Imager equipment
Digital cameraIncluded.
Full screen modeIncluded.
JPEG storageIncluded.
Video streamingvia wireless LAN with testo Thermography App.
Standard lens35° x 26°.
InterfaceUSB 2.0 Micro B.
WLAN ConnectivityCommunication with the testo Thermography App; wireless module WLAN (EU, EFTA, USA, AUS, CDN, TR).
Imager storage
File format image.bmt; .jpg; export option in .bmp; .jpg; .png; .xls; .csv.
Storage deviceInternal Memory (2.8 GB).
Power supply
Battery typeFast-charging, Li-ion battery can be changed on-site.
Operating time4 h.
Charging optionsIn instrument / charger (optional).
Mains operationyes.
Ambient Condition
Housing protection classIP54.
Air humidity20 to 80 %RH non-condensing.
Storage temperature-30 to +60 °C.
Operating temperature-15 to +50 °C.
Physical specification
HousingPC - ABS.
Weight510 g.
Dimensions219 x 96 x 95 mm.
PC software
System requirementsWindows 10; Windows 8; Windows 7.
Standards, tests, warranty
EU-/EG-guidelinesRED: 2014/53/EU; EMC: 2014/30/EU.
testo 871 warranty2 years.


Testo 871 Datasheet

PDF Specifications of the Testo 871 Thermal Imager.

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Testo 871 Thermal Imager with App
Spare Battery Additional Lithium ion rechargeable battery for extending the operating time. 0515 5107
Charger Desktop charging station for optimising the charge time. 0554 1103
testo ε-marker (10 off) Markers for the testo ε-Assist function for the automatic determination of emissivity and reflected temperature. 0554 0872
Holster Holster case. 0554 7808

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