42”

Telescopic sighting night vision. Its principle is similar to that of a surveillance probe with night vision function. It uses infrared light to illuminate and the photosensitive lens captures the picture, picture is black and white. It is not thermal imaging! Full black irradiation distance: 5080 meters. City environment distance under light: 100-200 meters. Endurance… Read more DIY Infrared night vision device with 4.2” screen for night surveillance patrol