The Spyglass SG50-F triple infrared (IR) and ultraviolet (UV) open-path flame detectors (photo) offer fast and high-performance optical flame detection over extensive distances, and superior false-alarm immunity when operating in challenging environments. All Spyglass flame detectors are available with optional built-in color or near-IR video, which allows users to see fires remotely and make critical safety decisions from a distance. Color video is proficient at seeing gasoline and jet fuel fires, while the near-IR video option identifies fires caused by hydrogen and methanol, which may not be visible to the naked eye. — Teledyne Gas and Flame Detection, Cypress, Tex.