When both automatic fire suppression and fire alarm systems are installed, the focus should be on timely notification of personnel within the area as well as fire extinguishing personnel about the identified fire and its extinguishing. Depending on the type of facility, the following subsystems can be used during fire to provide immediate instruction to people and to evacuate properly from fire area.

1. Protected loudspeaker systems

2. Fire - call points

3. Fire-contact terminals

4. Evacuation signs

Protective loudspeaker systems differ from ordinary loudspeaker systems according to degree of security, and physical-chemical environment tolerance. As with all fire protection systems, the wires and materials used in protected loudspeaker systems are heat and fire resistant. Moreover, the loudspeakers themselves have the ability to operate in fire-resistant and extreme conditions.