FLIR K55 Thermal Imaging Camera Review

Jul 07
Flir K55 thermal imager for firefighters

The FLIR K55 is one of the highest end thermal imaging cameras specifically designed for fire fighters that FLIR makes; it is also one of the most expensive in the K series. While some less expensive thermal imaging cameras that cater to fire fighters are merely normal cameras with either slight upgrades or enhancements to help them function better under harsh and high temperature environments the K55 was built from the ground up specially for fire fighters and the demands they put on their equipment daily. As always this camera has FLIR’s award winning 2-5-10 warranty. For those looking for one of the highest quality thermal imaging cameras in this niche and a large budget then the FLIR K55 may very well be the right choice for you.


  • 5 Stars on Amazon Currently
  • IR resolution 320 × 240 pixels
  • Thermal sensitivity < 30 mK @ +30°C (+86°F)
  • Contrast optimization Digital image enhancement using FSX
  • FOV 51° × 38° / fixed focus
  • 60 Hz Image Frequency
  • 2x digital zoom
  • Focal Plane Array (FPA) / Spectral range Uncooled microbolometer / 7.5–13 µm
  • Start-up time < 17 sec. (IR-image, no GUI)
  • Start-up time from sleep mode < 4 sec.
  • Image storage Up to 200 JPEG images on internal Flash Memory (co-dependent on the number of saved video clips)
  • ​In-camera video recording format Non radiometric MPEG-4 to internal Flash Memory
  • ​Display 4” LCD, 320 × 240 pixels, backlit
  • ​Image modes • IR image:TI Basic NFPA fire-fighting mode / Black-and-white fire-fighting mode / Fire modeSearch-and-rescue mode / Heat detection mode Thumbnail gallery
  • ​Object temperature range -4 °F to +302 °F, 0 °C to +650 °C
  • ​USB-mini Interface
  • Video storage 200 files in total, with a maximum duration of 5 minutes per video clip
  • ​Battery Li Ion, 4 hours operating time
  • ​Charging time 2 hours to 85% (3 hours and 25 minutes) capacity, charging status indicated by LED’s
  • ​ Operating Tempature Range +150°C (+302°F): 15 min
  • ​Certified according toNFPA 1801:2013 specification:• Vibration• Impact acceleration resistance• Corrosion• Viewing surface abrasion• Heat resistance• Heat and flame• Product label durability
  • ​Drop 2.0 m / 6.6 ft., on concrete floor (IEC 60068-2-31)
  • ​Magnetic fields EN 61 000-4-8, Test level 5 for continuous field (severe industrial environment)
  • ​Encapsulation IP 67 (IEC 60529)
  • ​Shock 25 g (IEC 60068-2-27)
  • ​Vibration 2 g (IEC 60068-2-6)


  • Built from the ground up for Fire Fighters
  • Very durable and rugged
  • Comes from a trusted leader in the industry
  • Outstanding warranty


  • Expensive - not all fire fighters may need a thermal camera this expensive
  • You can find a lot of the same features in lower priced models