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Testo 0560 8651 865s - Thermal imager (160 x 120 pixels)

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Original price $1,889.00
Current price $1,605.65
SKU 0560 8651
Currently 1 in stock.

Testo 0560 8651 865s - Thermal imager (160 x 120 pixels)



  • Image quality with IR resolution of 160 x 120 pixels (320 × 240 pixels with testo SuperResolution technology)
  • Thermal sensitivity of 0.18 °F (0.1 °C)

  • Automatic detection of hot and cold spots

  • Free analytical software for creating professional reports

  • Fast measurement with fixed focus

  • Measuring accuracy of ±3.6 °F (±2 °C)


The testo 865s thermal imager combines all the important properties required for high-quality thermographic measurement – it is accurate, robust, fast and reliable. The testo 865s provides high-quality thermography at an affordable price and keeps going even in tough working conditions. The case supplied with the thermal imager means it can be conveniently transported, so it is always there for you when needed.


Product Description

The testo 865s thermal imager offers professional technology and concentrates on functions which are needed in a contractor's daily work. The testo 865s is a user-friendly thermal imager, optimized for fast and efficient work. With the testo ScaleAssist functions ensuring optimum setting of the thermal image scale for building thermography and the IFOV warner making sure you avoid measurement errors, you will always generate the perfect infrared image.

Areas of application of the testo 865s thermal imager

Detect leaks, identify overheated connections, pinpoint thermal bridges or detect structural defects. The testo 865s thermal imager is ideal for applications in daily maintenance and installation work in trade and industry. It enables time-saving quality assurance and ensures reliable production control.

Technical highlights of the testo 865s thermal imager

The testo 865s thermal imager stands out thanks to its easy operation and has the following impressive technical features:
  • Very good image quality due to high resolution: 19,200 temperature measuring points ensure precise thermography. Infrared resolution of 160 x 120 pixels – via integrated SuperResolution Technology 320 x 240 pixels
  • Visualize temperature differences from 0.18 ºF (0.1 ºC)
  • Critical temperature conditions are directly displayed via automatic hot-cold spot recognition
  • 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
  • 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 behavior of buildings
  • Pro software for image evaluation on the PC
  • You can choose to save thermal images as JPEGs

Delivery Scope

testo 865s thermal imager, including USB cable, mains unit, lithium-ion rechargeable battery, IRSoft professional software (free download), commissioning instructions, short instructions, calibration protocol and case.


Detecting structural defects and ensuring construction quality (especially: air tightness of windows and doors)

Analysis with a Testo thermal imager is a fast and efficient method of detecting possible structural defects. Furthermore, Testo thermal imagers are ideally suited for providing proof of the quality and correct implementation of construction measures. Any heat losses, humidity and lack of air tightness in a building are visible in the thermal image. The Testo thermal imager makes it possible to detect faulty thermal insulation and structural damage – all using a non-contact method! The testo ScaleAssist function, which automatically ensures optimum setting of the thermal image scale, means you get objectively comparable thermal images of buildings. This makes correct assessment of structural defects and thermal bridges easier than ever before. Checking the air tightness of windows and doors is one of the typical applications of the thermal imager.

Easy checking of heating and installation systems

Testo thermal imagers are easy and intuitive to operate, so they are ideal for quickly and reliably checking heating, ventilation and air conditioning systems. Just a quick look with the thermal imager is enough to discover irregularities in temperature distribution. Thus, thermography can be used to easily locate clogged radiators and leaks. Typical applications for the thermal imager:

  • Checking radiators for silting
  • Locating leaks
  • Measuring the flow and return temperature
  • Pinpointing the course of heating loops in an underfloor heating system

On the trail of a ruptured pipe

If a pipe rupture is suspected, the only solution left is often to break open entire wall or flooring areas. The thermal imager enables you to minimize damage and reduce costs, because you locate precise leaks in underfloor heating and other inaccessible pipelines. This avoids opening up walls and floors unnecessarily and considerably reduces the repair costs.


Technical Data



EMC: 2014/30/EU

Infrared image output

Field of view:

31° x 23°


Fixed focus

Minimum focus distance:

<1.6ft (0.5m)

Geometric resolution (IFOV):

3.4 mrad

Image refresh rate:

9 Hz

Infrared resolution:

160 x 120 pixels

SuperResolution (IFOV):

2.1 mrad

SuperResolution (Pixel):

320 x 240 pixels

Thermal sensitivity:

< 0.18 °F (0.1 °C) (100mK)

Spectral range:

7.5 to 14 µm

Image presentation

Color palettes:

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

Display option:

IR image only

Display type:

3.5 in (8.9 cm) TFT, QVGA



±3.6 °F (±2 °C), 2% of reading (higher value applies)


0.01 to 1

Measuring range:

-4 to 536 °F (-20 to 280 °C)

Reflected temperature:


Measuring function

Analysis function:

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

IFOV warner:


testo ScaleAssist:


Imager equipment

Video streaming:

via USB

Standard lens:

31° x 23°

JPEG storage:


Full screen mode:



USB 2.0 Micro B

Imager storage

File format image:

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

Storage device:

Internal Memory (2.8 GB)

Power supply

Battery type:

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

Power supply:


Operating time:

4.0 hr

Ambient Condition

Air humidity:

20 to 80 %RH non-condensing

Housing protection class:




Storage temperature:

-22.0° to 140.0 °F / -30 to +60 °C

Operating temperature:

5.0° to 122.0 °F / -15 to +50 °C

Physical specification




18 oz. / 510 g


9 x 4 x 4 in. / 219 x 96 x 95 mm

PC software

System requirements:

Windows® 10; Windows® 8.1

General technical data

Product colour:


Display ligthing:

bright / normal / dark