Frequently Asked Questions
Fire alarm systems receive primary power from commercial electricity and secondary power from batteries or a generator. Per NFPA 72, backup power must provide a minimum of 24 hours of standby and 5 minutes of alarm operation.
Fire alarm system design begins with a code analysis using IBC, NFPA 101, and local requirements, then coordinates with architectural and MEP drawings. Design deliverables include device spacing calculations, riser diagrams, voltage drop calculations, and device legends, with AHJ review and PE stamping where required.
Strobes must flash between 1 and 2 Hz and be visible in all public and common areas, typically mounted between 80 and 96 inches. Audible devices must exceed ambient noise by at least 15 dB or reach a minimum of 75 dB at pillow level in sleeping areas, per NFPA 72 and ADA 2010 standards.
Voice evacuation systems use speakers to deliver pre-recorded or live emergency messages directing occupants to exit safely. They are required in certain occupancies, such as high-rise buildings and assembly areas exceeding 1,000 occupants per IBC and NFPA 101.
NFPA 72 requires monthly visual inspections, quarterly testing of certain initiating devices, and annual full-system functional testing. All results must be documented and available for review by the Authority Having Jurisdiction (AHJ).
In most commercial settings, yes. NFPA 72 requires fire alarm systems to be connected to a UL-listed central monitoring station for 24/7 response, unless specific exceptions apply for small occupancies with local-only alarms.
The fire alarm control panel sends a signal to the central monitoring station, where operators identify the alarm type and location, then dispatch fire services and notify designated contacts according to a site-specific response plan.
FSS Technologies delivers fire alarm design, installation, and ongoing support backed by code expertise and UL-listed monitoring integration. Your systems are built and maintained to meet NFPA 72 and local AHJ requirements from day one.
The required types depend on the hazards present in the space. Common options include Class ABC dry chemicals (multi-purpose), wet chemicals (commercial kitchens), CO₂ (electrical equipment), and Class D dry chemicals (combustible metals).
NFPA 10 determines fire extinguisher quantity based on your space’s hazard classification, square footage, and maximum travel distance. Buildings with mixed hazards, multiple floors, or high-risk areas may require additional units.