FLIR K33 Thermal Imaging Camera Review

Jul 07
Flir K33 thermal imager for firefighters

The FLIR K33 is another thermal imaging camera designed for Fire Fighters and first responders. This camera is the next step up from the K2 Thermal imaging camera. You can read our review here. The main additional features of this camera are FLIR’s flexible scene enhancement which provides cleaner and clearer structural and textural details. This camera also has a larger 4-inch display. The K33 also has a higher resolution than the K2; other features remain the same. The above added features also almost double the price of the K2 which may make this camera out of range for fire departments that do not have large numbers of fires per year. As always, the K33 is backed by FLIR’s 2-5-10 warranty. For those looking for a step up from the K2, a larger screen, and enhanced resolution the K33 could be perfect provided the increased cost is acceptable. Currently there are no reviews as this is a newer camera.


  • IR Resolution 240 x 180 pixels
  • Thermal Sensitivity/NETD < 40 mK @ 30°C (86°F)
  • Contrast Optimization Digital image enhancement using FSXTM
  • Field of View (FOV) 51° × 38°
  • Image Frequency 60 Hz
  • Spectral Range 7.5–13 µm
  • Start-up Time < 17 sec. (IR-image, no GUI)
  • Start-up Time from Sleep Mode < 4 sec.
  • Image Storage No
  • Video Storage No
  • In-Camera Video Recording No
  • ​Display 4” LCD, 320 × 240 pixels, backlit
  • ​Image Modes TI Basic
  • ​Auto-Range Yes, mode dependent
  • ​Object Temperature Range –20°C to 150°C (-4°F to 302°F)0°C to 650°C (32°F to 1202°F)
  • ​Battery Li Ion, 4 hours operating time
  • Operating Temperature Range –20°C to 85°C (–4°F to 185°F)150°C (302°F): 15 min.260°C (500°F): 5 min.
  • ​Directives Designed to meet NFPA 1801:2013 specification:Vibration, Impact acceleration resistance, Corrosion, Viewing surface abrasion, Heat resistance, Heat and flame, Product label durability
  • ​EMCEN 61000-6-2:2005 (Immunity)EN 61000-6-3:2011 (Emission)FCC 47 CFR Part 15B (Emission)
  • ​Magnetic Fields EN 61000-4-8, 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)
  • ​Drop 2.0 m / 6.6 ft., on concrete floor (IEC 60068-2-31)
  • Safety (Power Supply) CE/EN/UL/CSA/PSE 60950-1
  • Camera Weight, Incl. Battery < 1.1 kg / 2.4 lb
  • Prime Eligible


  • Built specially for fire fighters and heavy everyday use
  • Large screen for easy viewing
  • Built to withstand the daily wear and tear of fire calls
  • FLIR’s award winning warranty


  • Much more expensive than the K2
  • No image or video recording ability