testo 871s - Thermal imaging camera (240 x 180 pixels, App)

SKU: 5608716

Sale price£2,035.31 inc VAT


              • Image quality with IR resolution of 240 x 180 pixels (with testo SuperResolution technology 480 × 360 pixels)

              • Thermal sensitivity of 0.08 °C

              • Recording and documentation of ambient conditions via radio probe (humidity/temperature probe or clamp meter)

              • Free analytical software for creating professional reports

              • Fast measurement with fixed focus

              • App for analysis and creating on-site measurement reports

              The testo 871s thermal imager offers a high-quality 240 x 180 pixel detector, connectivity via the testo Thermography App and numerous innovative functions. It fits comfortably in the hand and convinces with intuitive operation in a modern tile look. For even more meaningful thermal images, the thermal imager also wirelessly integrates the measurement values of the clamp meter testo 770-3 as well as the thermohygrometer testo 605i (both available as an option).

  • Details

    Product Description

    We developed the testo 871s thermal imager together with our experienced professionals to enable you to work quickly and easily with professional thermal imaging technology. You can generate error-free and objectively comparable infrared images using its handy functions. The IFOV warner, testo ɛ-Assist and testo ScaleAssist mean you can avoid measurement errors and not only effortlessly achieve optimum setting of emissivity (ɛ) and reflected temperature (RTC) for building thermography, but also of colour scale.

    The testo 871s thermal imager– smart and networked

    The testo 871s 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.

    The testo 871s delivers even more informative thermal images in combination with the compatible 770-3 clamp meter and the testo 605i thermohygrometer. Both are available separately – simply order them straight away along with your testo 871s. The measurement results of both measuring instruments can easily be transmitted via Bluetooth. The additional output, current and voltage values of the testo 770-3 clamp meter enable better interpretation of measured temperatures. Measure the air temperature and humidity with the testo 605i and easily detect locations at risk of developing mould using the special humidity palette in the thermal imager via the traffic light principle.

    Areas of application of the testo 871s thermal imager

    Detect leaks, pinpoint thermal bridges, discover structural defects, identify overheated connections or assess mould damage. The testo 871s 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.

    Technical highlights of the testo 871s thermal imager

    Really simple operation with impressive professional thermal imaging technology: the testo 871s thermal imager has the following impressive features:
    • Very good image quality due to high resolution: 43,200 temperature measuring points for precise thermography. Infrared resolution of 240 x 180 pixels – extendible to 480 x 360 pixels via integrated SuperResolution Technology
    • Detecting temperature differences from 0.08°C
    • The testo Thermography App enables you to write reports on site, save them online and send them by e-mail, as well as allowing you to use mobile terminal devices as a second display or for remote control
    • Wireless communication thanks to Bluetooth – this means you can also wirelessly integrate the readings of the compatible testo 770-3 clamp meter and testo 605i thermohygrometer
    • 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
    • The testo ScaleAssist automatically ensures optimum setting of the thermal image scale, which means you generate objectively comparable and error-free thermal images, for example of the thermal insulation behaviour of buildings
    • The IFOV warner means the distance from the measurement object / measurement spot size is determined and the measurement spot is shown on the thermal image – you therefore avoid measurement errors because the camera shows you exactly what you can measure
    • Pro software for image evaluation on the PC
    • You can choose to save thermal images as JPEGs

    Delivery Scope

    testo 871s 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.

    Technical Data

    Standards and warranty


    RED: 2014/53/EU; EMC: 2014/30/EU

    Infrared image output

    Infrared resolution

    240 x 180 pixels

    Thermal sensitivity

    <0.08 °C (80 mK)

    Field of view

    35° x 26°

    Minimum focus distance

    <0.5 m

    Geometric resolution (IFOV)

    2.6 mrad

    SuperResolution (Pixel)

    480 x 360 pixels

    SuperResolution (IFOV)

    1.6 mrad

    Image refresh rate

    9 Hz


    Fixed focus

    Spectral range

    7.5 to 14 µm

    Image output visual

    Image size

    5 MP

    Minimum focus distance

    min. 0.5 m

    Image presentation

    Display type

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

    Display option

    IR image / real image


    4 (iron, rainbow, cold-hot, grey)


    Measuring range

    -30 to +100 °C; 0 to +650 °C


    ±2 °C, ±2 % of mv


    0.01 to 1

    Reflected temperature


    testo ε-Assist


    Measuring function

    Solar mode – manual

    Input of solar radiation value

    Analysis function

    Mean point measurement, hot/cold-spot recognition, Delta T

    Electrical mode - manual

    Input of current, voltage or power

    IFOV warner


    Humidity mode - manual


    testo ScaleAssist


    Humidity measurement with humidity measuring instrument

    Automatic measurement value transfer of thermohygrometer testo 605i via Bluetooth (instrument must be ordered separately)

    Electrical measurement with clamp meter

    Automatic measurement value transfer of clamp meter testo 770-3 via Bluetooth (instrument must be ordedered separately)

    Imager equipment

    Full screen mode


    JPEG storage


    Video streaming

    via wireless LAN with testo Thermography App

    Standard lens

    35° x 26°

    Digital camera



    USB 2.0 Micro B

    WLAN Connectivity

    Communication with the testo Thermography App wireless module BT/WLAN (EU, EFTA, USA, AUS, CDN, TR)


    Measurement value transfer from thermohygrometer testo 605i, clamp meter testo 770-3 (optional) Wireless permit in EU, EFTA, USA, Canada, Australia, Turkey"

    Imager storage

    File format image

    .bmt; .jpg; export option in .bmp; .jpg; .png; .csv; .xls

    Storage device

    Internal Memory (2.8 GB)

    Power supply

    Battery type

    Fast-charging, Li-ion battery can be changed on-site

    Operating time

    4.0 h

    Mains operation


    Ambient Condition

    Air humidity

    20 to 80 %RH non-condensing

    Housing protection class




    Storage temperature

    -30 to +60 °C

    Operating temperature

    -15 to +50 °C

    PC software

    System requirements

    Windows® 10; Windows® 8.1

    General technical data

    Product colour


    Display ligthing

    bright / normal / dark

    Physical specification

    Product-/housing material

    PC - ABS


    510 g


    219 x 96 x 95 mm

BrandTESTO (CAT 100)

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