NFPA 72 — National Fire Alarm and Signaling Code
NFPA 72 establishes requirements for fire alarm systems including two-way in-building emergency communications. It mandates ERRCS installation when building signal testing shows inadequate radio coverage for first responders.
Key requirements
- 99% floor area coverage for critical areas
- 90% general building area coverage
- Annual testing and recertification required
- DAQ 3.0 or better audio quality
- Battery backup minimum 24 hours standby
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