The Testo 860i is an advanced wireless thermal imaging camera designed for effortless smartphone integration via the testo Smart App. Offering exceptional flexibility, it can be used wirelessly or attached directly to a smartphone for easy one-handed operation.
With high infrared resolution (256 x 192 pixels), the Testo 860i captures ultra-sharp thermal images, making it ideal for HVAC, maintenance, and building diagnostics. The innovative DeltaHeat and DeltaCool functions enable quick and precise Delta T measurements, crucial for assessing heating and cooling systems. Additionally, its humidity mode function assists in evaluating mold risks in indoor environments.
For even more comprehensive measurements, the Testo 860i seamlessly connects with the Testo 770-3 clamp meter and Testo 605i thermohygrometer, allowing professionals to integrate electrical, temperature, and humidity data directly into their thermal analysis.
The Testo Smart App enhances usability, allowing real-time image display, analysis, and seamless on-site documentation. Built for tough conditions, the testo 860i features IP54 protection, 1.5m drop resistance, and a long-lasting rechargeable lithium battery, ensuring reliability in the field. A must-have tool for professionals who require fast, accurate, and smart thermal imaging solutions.
Key Features:
Simple and fast determination of Delta T in the thermal image using application-specific DeltaHeat and DeltaCool measurement functions
Razor-sharp thermal images thanks to high infrared resolution (256 x 192 pixels)
Everything is simple with the Testo Smart App: easy operation and effortless documentation with on-site emailing
Flexible handling through wireless use or one-handed operation directly attached to a smartphone
High suitability for everyday use and robustness with IP54 and fall protection up to 1.5 m
requires iOS 17 or newer; requires Android 14 or newer; requires mobile end device with Bluetooth 4.0
Infrared image output
Field of view
48° x 36°
Focus
Fixed focus
Minimum focus distance
0.3 m
Image refresh rate
9 Hz
Infrared resolution
256 x 192 pixels
Thermal sensitivity
50 mk
Infrared image output
Spectral range
8 to 14 µm
Image output visual
Minimum focus distance
0.4 m
Image size
640 x 480 pixels
Image presentation
Colours
iron, rainbow, rainbow HC, cold-hot, blue-red, grey, inverted grey, sepia, Testo, iron HAT, humidity palette
Digital zoom
yes
Display option
IR image / real image
(in the testo Smart App)
Measurement
Accuracy
±3 °C or ±3 % of m.v. (at ambient temperature of -10... +40 °C and scene temperature of 0... +150 °C or +100... +350 °C)
Emissivity
0.01 to 1
Measuring range
-20 to +350 °C
Reflected temperature
manual; (via testo Smart App)
Measuring function
Analysis function
Hot/cold spots, Delta T, up to 10 selectable individual measuring points, area measurement (min./max. on area)
Electrical mode - manual
Input of current, voltage or power
Humidity mode - manual
yes
Humidity measurement with humidity measuring instrument
Automatic transfer of the optional testo 605i or testo 625 thermohygrometer readings via Bluetooth to the testo Smart App
Electrical measurement with clamp meter
Automatic reading transfer of the optional testo 770-3 clamp meter via Bluetooth to the testo Smart App
Application-specific measurement functions
DeltaHeat; DeltaCool; Humidity mode
(in the testo Smart App)
Imager equipment
Full screen mode
yes
WLAN Connectivity
Communication with the testo Smart App; WIFI: IEEE 802.11b/g/n*
Bluetooth
Peer-to-peer advertising for fast connection set-up*
Remote-controlled operation
Up to 10 m from the mobile device (via WLAN)
* An overview of the radio authorisations in the different countries can be found in the download section of the testo 860i product page in the "Quick Start Guide testo 860i" document.
Imager storage
File format image
.bmt; .jpg; .csv
Storage device
On a mobile device
Power supply
Battery type
Integrated Li-ion rechargeable battery
Charging options
USB-C
Charging time
Approx. 90 min (15-min charge of an empty battery equals 30 min of operating time)
Ambient Condition
Air humidity
5 to 95 %RH, non-condensing
Vibration
IEC 60068-2-6
Impact resistance test
1.5 m
Storage temperature
-20 to +70 °C
Operating temperature
-10 to +50 °C
Physical specification
Tripod mounting
1/4" - 20UNC
Mobile device attachment
Clip span: min. 120 mm, max. 170 mm and device depth up to max. 12 mm
Why choose Instrotech for your electrical test equipment?
With over 40 years’ experience supporting UK electricians, technicians and engineers, Instrotech is your trusted partner for quality tools and expert service. When you purchase from us, you benefit from:
Free UK shipping on all orders
Access to our knowledgeable technical support team
Available calibration services to maintain safety compliance
A 90-day money-back guarantee for complete peace of mind
We’re committed to helping you work safely and efficiently with industry-leading products and ongoing support.
