SFERA GROUP
We design, install, and integrate Public address and BGM systems with skilled experience and creativity, delivering reliable, customized security solutions.
Keeping people informed, secure and entertained
Public Address System (PA System) – a sound amplification solution used to broadcast voice messages, alarms, or music across buildings or outdoor areas for communication, safety, and emergency alerts.
Building on industry-leading technology, we always focus on the user experience, designing exceptionally user-friendly interfaces for seamless interaction and integration with third-party products. Our extensive portfolio enables us to provide you with one-stop solutions that cover the entire signal chain, including loudspeakers, microphones, electronics, and more. Choosing public address systems from our company means you're getting exceptional solutions that can accommodate applications of any size.
Key Benefits of Public Address systems
- Efficient Mass Communication
- Emergency Notification
- Improved Safety and Security
- Operational Efficiency
- Customizable Zoning
- Integration with Other Systems
- Public Engagement
- Cost-Effective Communication Tool
Public Address systems in Details
Public address systems are versatile solutions that combine voice broadcasting, fire and emergency alert functions, and also serve as a platform for background music or for delivering service and promotional announcements.
The system can be activated manually—by on-site personnel—or automatically, triggered by the fire or security alarm system. The purpose of the voice evacuation system is to promptly inform people of an emergency situation and guide them on evacuation routes. Effectively and timely addressing this task is sometimes even more critical than the operation of any other security subsystem. In the event of a fire or other emergency, alerting people in the danger zone must be carried out through voice announcements.
Facilities equipped with public address and evacuation systems are classified into five types, with the fifth type being the highest.
The equipment requirements for such high-class facilities are the most stringent. It is mandatory to provide voice evacuation alerts, divide the building into zones with a specific sequence for notifying occupants, enable feedback from alert zones to the fire control room or dispatcher station, and ensure coordinated control of all fire protection systems in the building. In addition, the system must include visual signaling devices.
Public address systems are integrated into the overall fire safety system. The audio pathway of the alert system is activated by signals received from fire detectors or other devices. Today, it is rare to find standalone voice alert systems. Typically, they are integrated with systems for background music, voice announcements, advertising, and/or dispatch communication.
A public address and voice evacuation system includes automatic devices that receive signals from fire detectors, as well as equipment responsible for the audio path: audio signal sources (tuners, cassette decks, CD players, digital devices), audio processing units, power amplifiers, and loudspeakers. The automation devices are configured based on the customer's specific requirements. The configuration of the audio path depends on the system’s intended functions—whether it’s solely for emergency alerts or also includes voice and background music broadcasting.
The system operates according to a simple algorithm: when emergency detectors are triggered, the alert system is activated. Upon activation of the input stage, the power supply units automatically turn on. If the main power is unavailable, backup batteries are engaged. Various audio sources are activated according to a pre-programmed algorithm. These may be digital or analog sources, depending on customer preferences. The evacuation message is broadcast in specific zones, following a preset sequence determined by fire safety regulations. Occupants receive clear instructions about evacuation routes and actions they need to take.
The presence of an emergency voice alarm system is a mandatory requirement in the fire safety system of any administrative or public building, according to current fire safety regulations.
Key benefits of PA systems
Efficient Mass Communication
Instantly deliver announcements, alerts, or instructions to large groups of people across different areas.
Emergency paging and Notification
Broadcast urgent messages (e.g., fire, evacuation, lockdown) quickly and clearly to ensure safety and compliance.
Improved Safety and Security
Enhances emergency response and coordination during critical incidents in schools, offices, factories, and public venues.
Operational Efficiency
Streamlines internal communication across departments, reducing delays and misunderstandings.
Common use cases for Public Address (PA) systems
- Quickly inform occupants during fire, natural disasters, or security threats.
- Deliver clear evacuation instructions zone by zone.
PA System Use Cases
- Office Buildings and Corporate Spaces
- Retail Stores Shoping Mall, Centres
- Airports & Transportation Hubs
- School and Universities
- Hospitals & Medical Facilities
– Used for general announcements, emergency alerts, employee paging, and coordination during evacuations or drills.
– To play background music, make promotional announcements, or broadcast emergency messages.
– For flight/train announcements, security alerts, and emergency instructions.
– For daily announcements, bell schedules, emergency lockdowns, and evacuation guidance.
– For paging doctors/nurses, communicating with staff, and ensuring quick response during emergencies.
Just contact our specialist
Contact us for consultation, scheduling a specialist visit, determining the installation location, type of equipment, and quantity, as well as preliminary cost estimation and project timeline.
Our specialists will select a system that fully meets your requirements with the best price-quality ratio (consultations and site visits are free). When creating and designing an Public Address system, many nuances must be considered that can affect the price.
We work with equipment from various manufacturers, so we can always find the most effective solution for your needs. The most commonly used brands we work with are Hikvision, Bosch, TOA, Jedia and others.
Commonly used equipment components
Let's us know, what you need
Public address systems are now an essential part of modern infrastructure, providing clear and effective communication across various environments. Whether used for emergency alerts, general announcements, or background music, these systems enhance safety, coordination, and the overall user experience in facilities such as schools, hospitals, transport hubs, and commercial buildings.
