Infrared thermal imaging is the "eye of the night" and an important visual extension of human beings. Infrared thermal imaging is not affected by visible light and can penetrate darkness, glare, smoke and thick smoke, so it has a very wide application space. For example, Tianyan T2 mobile phone camera has the function of 870 meters long night vision, which is a field survival equipment that can "see through the night" and can be used for tracking/searching/hiking/camping safety. Outdoor novice, eye t2 is enough.