NFPA 72. Are there certain occupancies that are required to have their alarm system "monitored" from an outside agency?
In terms of NFPA 101, the requirements are found in the subsection _.3.4 of the occupancy chapters.
Handy reference for the various systems requiring supervision: https://www.nfpa.org/~/media/Files/forms%20and%20premiums/nfpa72lsc.pdf
In terms of the International Family of Codes the requirement for monitoring depends. Pursuant to Section 903 (Automatic Sprinkler Systems), Subsection 903.4.1 (Monitoring) offsite monitoring of Alarm, Trouble and Supervisory signals by an approved supervising station or where approved by the fire code official at a constantly attended location where an audible signal is sounded is required with some exceptions. In every case I have dealt with here offsite monitoring was provided as most facilities do not have a constantly attended security office or building facilities office.
As to fire alarm systems, Section 907 (Fire Alarm and Detection Systems), Subsection 907.6.6 (Monitoring) calls for monitoring by an approved supervising station for fire alarm systems required by Chapter 9 of the International Fire or International Building Code with some exceptions.
Look at Chapter 9, Section 903 and Section 907 of either the International Building or Fire Codes for clarification.
Also it never hurts to ask your local Authority Having Jurisdiction as municipalities amend model codes and standards to suit the needs of their respective communities.
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