Objective:

The Public Address (PA) System is designed to deliver clear and targeted communication within specific zones or areas of a building, particularly during emergencies. Speakers are strategically positioned to ensure effective communication throughout the facility.

System Components:

1. Speakers with Beacon: Equipped with visual and audible alert features.
2. Voice Announcement Speakers: Designed for clear and intelligible voice communication.

Master Control:

• Direct Announcements: Allows operators to make real-time announcements.
• Automatic Messages: Enables pre-recorded messages to be broadcasted to selected locations, floors, or areas as needed.

Voice Alarm:

• Fire Alarm Activation: Upon detecting a fire, the system automatically broadcasts a message indicating the fire’s location, facilitating a swift response from occupants and rescue teams.

Audio Specifications:

• Output Level: Speakers must produce audio levels between 65 dB and 100 dB.
• Clarity: Must ensure clear and understandable announcements.

Fault Monitoring and Supervision:

• Speaker Monitoring: Each speaker unit is electrically supervised to detect faults such as open or short circuits.
• Cable Requirements: Use fire-resistant cables with supervised cores for reliability.

Connectivity Monitoring:

• Control Panel Monitoring: The control panel continuously checks the connectivity of each speaker unit.
• Alert System: Provides audio-visual warnings if any speaker unit encounters defects or connectivity issues.

Power Backup:

• Secondary Battery: The system includes a backup battery to ensure uninterrupted operation during power outages.

Note:

• The assembly point speaker must be weather proof to withstand diverse environmental conditions. A horn-type speaker is recommended, with a minimum power rating of 12 watts and an audio output ranging from 90 to 100 dB. In car parking areas, ensure adequate coverage for effective communication throughout the space.
• The PA system should be capable of driving all connected speakers simultaneously at full load, with an additional 20% capacity reserved for future expansion.
• The power backup must provide a minimum of 30 minutes of operation at full load to ensure uninterrupted performance.

What are the locations Public Address speaker unit shall be installed ? 

1. Each floor level
2. Each notification zone
3. Elevator lobbies
4. Area(s) of refuge
5. Each floor level inside an enclosed exit stair (s)
6. Assembly point