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).