Flir c2 compact thermal imaging system flir flir c2 p the flir c2 is the world s first full featured pocket sized thermal camera designed especially for building applications keep it on you so you re ready anytime to find and show hidden heat patterns that point out energy waste structural defects plumbing clogs hvac issues and other problems p p the slim light profile fits comfortably in any work pocket so you can always keep your c2 at your side and never miss an opportunity to u