There are two forms of mounted temperature detectors: linear detectors, which keep track of the temperature in the course of an area, and place detectors, which monitor the temperature in a single particular site. The PAD200-DUCTR is intended and crafted to fulfill all community necessities, together with the NFPA restrictions https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/