Insight Technology thermal imaging equipment provides exceptional see-in-the-dark capability as well as the ability to "see" thermal signatures in any light condition! Heavy rain, fog and other obscurants dramatically degrade photonic vision, but Insight thermal devices provide usable thermal imagery under almost every natural and man-made obscurant - day or night. Thermal imaging devices detect temperature differences by emitting infrared (IR) energy (heat) at differing rates and displays them as a picture of the viewed scene. Insight Technology takes pride in its state of the art thermal imaging equipment, which come in a variety of forms, including monoculars and weapon sights. Insight Tech thermal sights are an essential tool for many tactical and law enforcement operations.