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XPander optical detectors are recommended for use as general-purpose smoke detectors for early warning of fire in most installations. The detector is calibrated so that XPander is highly reliable in detecting fires but has enhanced immunity to false alarms. The optical design operates on the well-established light scatter principle, allowing it to respond to a wide spectrum of fires.
The stability of the detector in terms of high reliability and low false alarm rate is further increased using algorithms to decide when the detector should change to the alarm state. This removes the likelihood of a detector producing an alarm from non-fire source smoke or smoking materials.