Fire Protection
Voice-alarm and public-address systems that deliver intelligible, zoned instructions so occupants know what to do and where to go during an incident.
Compliance Layer
SANS 10139 alignment SANS 14520 alignment SAQCC proof signals Inspection-ready documentation Commercial & industrial only Standards reference →What we do
We design, install and maintain voice-alarm (VA) and public-address (PA) systems that turn an alarm condition into clear spoken instructions. The work covers acoustic assessment, amplifier and loudspeaker design, zoning, and integration with fire detection so that the right message reaches the right area at the right time.
The problem
On large or complex sites, tone-only alarms are often inaudible over background noise and give occupants no direction. The result is hesitation, crowding at the wrong exits, and slow evacuation. A voice-evacuation system replaces ambiguity with specific, intelligible instructions, but only if it is designed for the acoustics of the space and proven to be understood.
Our approach
Loudspeaker layout and amplifier sizing based on the room's acoustics and background noise, designed to meet the speech-intelligibility targets in SANS 60849 and verified on commissioning.
Independently addressable zones so each area receives the correct alert, evacuate or all-clear message, supporting phased evacuation strategies where required.
The voice-alarm system is driven by the detection cause-and-effect matrix, so a confirmed event automatically triggers the correct sequence of messages without manual intervention.
Pre-recorded evacuation and alert messages for consistency, plus a controlled live-paging facility for marshals and emergency responders to give real-time instructions.
Continuously monitored loudspeaker circuits and standby power so a single cable or amplifier fault is reported and does not silence a whole zone.
Intelligibility measurements, zone plans and a cause-and-effect matrix handed over as a defensible record for insurers, consultants and authorities.
Case study
Warehousing & Logistics
A high-bay distribution centre had patchy detection coverage and a bell-only alarm that was inaudible across the racking, risking slow evacuation.
Representative scenario — not a named client or measured project result. Replace with approved project evidence before using as a real case study.
FAQ
A public-address system distributes general announcements. A voice-evacuation system is a life-safety system: its messages, zoning, monitoring and power supply are engineered and tested to deliver intelligible evacuation instructions during a fire. We design PA and VA so they work together where a single platform serves both functions.
Intelligibility is measured on site at commissioning rather than assumed from the design. We document the results against the speech-intelligibility targets in SANS 60849 and include them in the handover pack.
Often, yes. We assess the existing detection panel and cause-and-effect logic to confirm it can drive a voice-alarm system, then design the loudspeaker and amplifier layout for your spaces. Where the panel cannot support it, we set out the upgrade options.
What happens next?
Tell us the site, systems and any compliance deadline. No obligation.
We survey the installation, zones and current compliance status against the relevant SANS standards.
You receive a clear scope of work, standards mapping and transparent pricing.
We install or service the system and hand over signed compliance records for your file.
