The two-macro level classification of fire detection and alarm system areAnalogue & digitalConventional & addressableBasic & advancedManual & automatic

The two macro-level classifications of fire detection and alarm systems are:

1. Conventional and Addressable Systems:

   • Conventional Systems: In these systems, the building is divided into a number of different areas, or 'zones'. So, in the event of a fire, the conventional system could only give a general idea of the area of the alarm, but not the exact location.

   • Addressable Systems: These systems are more advanced. Each detector is given a set address, and the fire alarm panel can then determine exactly which detector or call point has initiated the alarm.

2. Manual and Automatic Systems:

   • Manual Systems: These systems require human intervention to detect a fire and activate the system. This is typically done through pull stations or break glass stations.

   • Automatic Systems: These systems automatically detect a fire without the need for human intervention. This is typically done through smoke detectors, heat detectors, or flame detectors.