FLIR T840, T865 & T865 DFOV


High Performance Infrared Cameras for Professionals

Now featuring Dual Field Of View (DFOV) Lens Options!



Category: SKU: 8205-0201


Designed for Thermography Professionals, the FLIR T840 and T865 are ideal for conducting surveys both indoors and outdoors.

Comfortably seek out indications of impending issue development or failure all day long.

Once challenging bright light outdoor inspections are made easy thanks to the integrated eyepiece viewfinder and a bright 4-inch color LCD display.

A 180° rotating lens and ergonomic design help you quickly diagnose failing components in hard-to-reach or “see” areas.

Available with 6°, 14°, 24°, 42°, FLEX View DFOV and MACRO lens options or any combination thereof ensure accurate temperature measurement of small targets from long or short distances.

Fast, flexible, accurate – in any work environment


Scan large areas from a safe distance with 464 x 348 resolution, and reduce the strain of full-day inspections with the 180° rotating optical block


Get industry-leading image clarity from FLIR Vision Processing™, MSX®, and UltraMax® to help you make the right call – fast


Get the most out of your workday with rapid reporting features that help you organize findings in the field



IR Resolution  464 x 348 (161,472 pixels) for the T840 and 640 x 480 (307,200 pixels) for the T865
Laser Pointer  Yes
Programmable Buttons  2
Spectral Range  7.5 – 14.0 µm
Text   Predefined list or touchscreen keyboard
Time Lapse  10 sec to 24 hrs
Voice   60 sec. recording added to still images or video via built-in mic (has speaker) or via Bluetooth
Weight & Dimensions (without lens)   1.3 kg (2.9 lbs), 140 x 201 x 84 mm (5.5 x 7.9 x 3.3 in)


Communication Interfaces  USB 2.0, Bluetooth, Wi-Fi
Storage Media  Removable SD card
Video Out  DisplayPort over USB Type-C


Operating Temperature Range  -15°C to 50°C (5°F to 122°F)
Storage Temperature Range  -40°C to 70°C (-40°F to 158°F)
Shock & Vibration & Encapsulation  25 g / IEC 60068-2-27, 2 g / IEC 60068-2-6 / IP 54; EN/UL/CSA/PSE 60950-1


Color palettes  Iron, Gray, Rainbow, Arctic, Lava, Rainbow HC
Detector Type and Pitch  Uncooled microbolometer, 17 µm
Digital Camera  5 MP, with built-in LED photo/video lamp
Digital Zoom  1x to 6x continuous zoom (T840)  1x to 8x continuous zoom (T865)
f-number  f/1.5
Focus  Continuous with laser distance meter (LDM), one-shot LDM, one-shot contrast, manual
Global Positioning System [GPS]  Automatic image tagging
Image Frequency  30 Hz
Image Sketch  From Touchscreen, on infrared image only
Lens Identification is Automatic
Minimum Focus Distance  lens approximately 1.0 m
Non-Radiometric IR or Visual Video  H.264 to memory card
Non-radiometric IR video streaming  H.264 or MPEG-4 over Wi-Fi MJPEG over UVC or Wi-Fi
Picture-in-Picture  Resizable and movable
Radiometric IR video recording  Real-time radiometric recording (.csq)
Radiometric IR video streaming  Yes, over UVC or Wi-Fi
Viewfinder  Yes
UltraMax  Quadruples pixel count; activated in menu and processed in FLIR Tools
UltraMax Resolution  645,888 effective pixels


Accuracy  ±2°C (±3.6°F) or ±2% of reading for the T840 and ±1°C (±1.8°F) or ±1% for the T865
Area measurement information  Yes; calculates area inside measurement box in m² or ft²
Laser Distance Meter  Yes; dedicated button
Measurement Presets  No measurement, center spot, hot spot, cold spot, User Preset 1, User Preset 2
Object Temperature Range  -20°C to 120°C (-4°F to 248°F); 0°C to 650°C (32°F to 1202°F); 300°C to 1500°C (572°F to 2732°F) for the T840.  Up to 2000°C (3632°F) for the T865
Spot Meter  3 ea. in live mode for T840; 10 each, 5 in live mode for T865
Thermal Sensitivity/NETD  <30 mK at 30°C (42° lens)


Display  4″, 640 x 480 pixel touchscreen LCD plus the auto-rotation screen alignment


Battery operating time  Approx. 4 hours at 25°C (77°F) ambient temperature and typical use
Battery Type  Li-ion battery, charged in camera or on separate charger


Packaging  Infrared camera with lens, small viewfinder eyecup, 2 batteries, battery charger, hard shell transport case, lanyards, front lens cap, power supply, printed documentation, 8 GB SD card, cables (USB 2.0 A to USB Type-C, USB Type-C to HDMI, USB Type-C to USB Type-C)


Image File Format  Standard JPEG with measurement data included
Image Storage Mode  Infrared, visual, MSX®, Picture-in-Picture

Infrared Training and Thermography Certification

Learn more, earn more.     800-221-0163

Classes scheduled regularly in most states including AK, AZ, NV, WA, CA, TX, IL, WI, TN, FL, GA, NC, SC, VA, AL, NJ, PA, UT, NY, NH, OH, IN, and IL.   Classes scheduled less frequently yet still available in OR, ID, MT, WY, ND, SD, NE, OK, MO, MI, MS, ME, NH, VT, RI, MA, CT, DE, NM, and HI


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