Testo 865s - Thermal imaging camera
High-Quality Thermal Resolution – Infrared resolution of 160 x 120 pixels (enhanced to 320 x 240 pixels with SuperResolution).
Accurate Temperature Detection – Thermal sensitivity of 0.1°C ensures even the slightest temperature differences are visible.
Automatic Hot & Cold Spot Recognition – Instantly identifies critical temperature anomalies for faster diagnostics.
User-Friendly & Durable – Intuitive one-handed operation with a rugged, IP54-rated design for tough environments.
Professional Reporting Software – Free analytical software for in-depth image evaluation and documentation.
The Testo 865s Thermal Imaging Camera is the perfect entry-level thermal imaging solution for professionals who demand precision and reliability. Designed for electricians, HVAC technicians, and building inspectors, this thermal imager captures detailed infrared images with 160 x 120 pixel resolution (upgradable to 320 x 240 pixels with SuperResolution technology), ensuring accurate temperature measurement from -20°C to 280°C.
With thermal sensitivity of 0.1°C, the testo 865s detects even the smallest temperature variations, making it ideal for pinpointing insulation gaps, overheating components, pipework leaks, and structural defects. Automatic hot/cold spot recognition simplifies diagnostics, highlighting temperature anomalies instantly.
Built for fast and efficient work, the testo 865s features intuitive one-handed operation with a simple, ergonomic design. The IFOV warning system ensures accurate measurements, while the ScaleAssist function automatically optimizes the thermal image scale, preventing interpretation errors. Thermal images can be stored on the large 2.8GB internal memory and transferred to a PC via USB for in-depth analysis using Testo’s free IRSoft software.
Durability is key for professionals working in demanding environments, and the testo 865s is built to last. With an IP54-rated splash-proof and dustproof casing, it withstands the rigors of daily use. The rechargeable battery provides up to 4 hours of continuous operation, ensuring you can complete inspections without interruptions.
Whether you're performing building inspections, electrical diagnostics, or HVAC system analysis, the testo 865s delivers high-quality thermal imaging at an unbeatable price-performance ratio.
Supplied with
- testo 865s thermal imager
- Case
- USB cable
- Mains unit
- Lithium-ion rechargeable battery
- IRSoft professional software (free download)
- Commissioning instructions
- Short instructions
- Calibration protocol
Testo 865s - Thermal imaging camera
Infrared image output
Infrared resolution: 160 x 120 pixels
Thermal sensitivity (NETD) : <0.1 °C (100 mK)
Field of view/min. focusing distance: 31° x 23° / < 0.5 m
Geometric resolution (IFOV): 3.4 mrad
testo SuperResolution (Pixel/IFOV): 320 x 240 pixels / 2.1 mrad
Image refresh rate: 9 Hz
Focus: Fixed focus
Spectral range: 7.5 to14 µm
Image presentation
Image display: 8.9 cm (3.5") TFT, QVGA (320 x 240 pixels)
Display options: IR image
Colour palettes: iron, rainbow HC, cold-hot, grey
Data interfaces: USB 2.0 Micro B
Measurement
Measuring range: -20 to +280 °C
Accuracy: ±2 °C, ±2 % of measurement value (larger value applies)
Emissivity / reflected temperature compensation: 0.01 to 1 / manual
Measurement functions
Analysis functions: Mean point measurement, hot/cold-spot recognition, Delta T
testo ScaleAssist: Yes
IFOV warner: YesImager equipment
Lens: 31° x 23°
Video streaming: via USB
Storage as JPG: Yes
Fullscreen mode: Yes
Image storage File format: .bmt and .jpg; export options in .bmp, .jpg, .png, .csv, .xls
Memory: Internal memory (2.8 GB)
Power supply
Battery type: Li-ion battery can be changed on-site
Operating time: 4 hours
Charging options: In instrument/in charging station (optional)
Mains operation: Yes
Ambient conditions
Operating temperature range: -15 to +50 °C
Storage temperature range: -30 to +60 °C
Air humidity: 20 to 80 %RH, not condensing
Housing protection class (IEC 60529) : IP54
Vibration (IEC 60068-2-6) : 2G
Physical features
Weight: 510 g
Dimensions: (LxWxH) 219 x 96 x 95 mm
Housing: PC – ABS
PC software System requirements: Windows 11, Windows 10, Windows 8.1
