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Frequently Asked Questions
- Yes, in most commercial settings.
- Per NFPA 72, systems must be connected to a UL-listed monitoring station for 24/7 response unless exceptions apply (e.g., small occupancies with local alarms).
- Strobes must flash between 1 Hz and 2 Hz and be visible in all public areas.
- Mounting height is typically 80–96 inches.
- Sound levels must exceed ambient noise by 15 dB or be at least 75 dB at the pillow in sleeping areas (NFPA 72/ADA 2010).
- A voice evacuation system uses speakers with pre-recorded or live messages.
- Required in certain occupancies (e.g., high-rises, assembly areas >1,000 people) per IBC/NFPA 101.
Per NFPA 72, testing is required:
- Monthly – visual checks on certain systems.
- Quarterly – for some initiating devices.
- Annually – full system functional testing.
- Recordkeeping is mandatory and must be available for AHJ review.
- Start with code analysis (IBC, NFPA 101, local codes).
- Coordinate with architectural and MEP drawings.
- Calculate device spacing (smoke detectors: 30 ft max spacing; strobes: based on room size/lumens).
- Include device legends, riser diagrams, and voltage drop calculations.
- Review by AHJ and PE stamp may be required.