Notification Appliance Synchronization: To forestall confusion for the duration of an crisis, NFPA 72 stipulates that notification appliances in precisely the same spot needs to be synchronized to make a consistent and intelligible warn signal. A fire alarm panel is usually at the rear of a door, providing the doorway https://www.firesense.co.uk/type/conventional-fire-system/conventional-fire-alarm-control-panels/