Abstract: A detector 10 for an alarm system 100 is operable to monitor a monitored area for disturbances. The detector includes a first neural network which has been trained to discriminate false alarms which should not result in an alarm being triggered by the alarm system 100 in a normal mode of operation from disturbances for which an alarm should be triggered in the normal mode of operation. The detector 10 is configured to receive an input from a user instructing the detector 10 to enter a training mode. The input includes a categorization setting instructing the detector 10 to label subsequent disturbances recorded whilst the detector 10 is in the training mode as either disturbances indicative of a false alarm, or as disturbances for which the alarm should be triggered in the normal mode of operation.

Abstract: A detector 10 for an alarm system 100 is operable to monitor a monitored area for disturbances. The detector includes a first neural network which has been trained to discriminate false alarms which should not result in an alarm being triggered by the alarm system 100 in a normal mode of operation from disturbances for which an alarm should be triggered in the normal mode of operation. The detector 10 is configured to receive an input from a user instructing the detector 10 to enter a training mode. The input includes a categorization setting instructing the detector 10 to label subsequent disturbances recorded whilst the detector 10 is in the training mode as either disturbances indicative of a false alarm, or as disturbances for which the alarm should be triggered in the normal mode of operation.