With its simple operation and display in the testo Smart App, the new testo 860i wireless thermal imager for smartphones is ideal for quick spot checks in the HVAC trade, maintenance, buildings and many other applications. testo 860i enables the quick and easy determination of Delta T (differential temperature) in the thermal image using application-specific measurement functions: DeltaHeat to quickly determine the spread of flow and return temperatures on radiators, DeltaCool to quickly determine the differential temperature on refrigeration and air conditioning systems. In addition, the humidity mode function helps to assess the risk of mould indoors. In maintenance, the thermography measurement function quickly and easily shows hotspots and Delta T. The testo 860i is operated, the thermal image and differential temperature displayed and documented using the testo Smart App - simple, fast and smart. testo 860i can be used flexibly, either with one-hand operation directly attached to the smartphone or tablet or separately. In addition, high suitability for everyday use, robustness and the rechargeable LI battery with a long operating time make the testo 860i a reliable companion.
Thermal imaging camera type | Mobile phone thermal imaging camera |
Temperature measuring range min. | -20 °C |
Temperature measuring range max. | 350 °C |
Image resolution | 256 x 192 pixels |
Item number | 55795141 |
Manufacturer | Testo |
Category | Thermal imaging cameras |
Manufacturer No. | 0563 0860 |
Release date | 11.3.2025 |
Thermal imaging camera type | Mobile phone thermal imaging camera |
Temperature measuring range min. | -20 °C |
Temperature measuring range max. | 350 °C |
Measurement accuracy | 3 °C |
Thermal sensitivity (NETD) | 50 mK |
Horizontal field of view | 48° |
Vertical field of view | 36° |
Refresh rate | 9 Hz |
Image sensor resolution | 49152 Pixel |
Image resolution | 256 x 192 pixels |
Interfaces / communication module | Bluetooth, Wi-Fi |
USB connector type | USB-C |
Functionalities | Thermography |
Protection type (IP code) | IP54 |
Power supply | Rechargeable battery operated |
Battery type | Li-ion |
Battery life | 4 h |
Battery size | Device specific |
Country of origin | Vietnam |
CO₂ emissions | 49,74 kg |
Climate contribution | EUR 1,25 |
Length | 3.80 cm |
Width | 4.50 cm |
Height | 16.50 cm |
Weight | 751 g |
Product Safety |
Length | 24.70 cm |
Width | 14.10 cm |
Height | 9 cm |
Weight | 742 g |
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