The IRIS series detectors, while maintaining the ease of use of a conventional detector, provide a series of technical solutions that until now were only available on the most sophisticated analog addressable systems. Thanks to the latest generation microprocessor-based technologies they contain, the detectors implement a series of algorithms that guarantee high immunity to false alarms combined with unparalleled reliability. Each detector contains a non-volatile memory in which it is possible to read the smoke and temperature trends measured in the period prior to the last alarm detected.