What fire alarm monitoring involves
Fire alarm monitoring connects a building’s fire alarm control unit to a supervising station. When a smoke detector, pull station or sprinkler waterflow switch activates, the panel transmits a signal and the station retransmits fire alarm signals to the fire department communications center. NFPA 72, the National Fire Alarm and Signaling Code, covers supervising stations in Chapter 26.
The station receives three kinds of signals:
- Alarm. A fire condition, such as a detector activation or sprinkler waterflow.
- Supervisory. An abnormal condition in a fire protection system, such as a closed sprinkler control valve.
- Trouble. A fault in the alarm system itself, such as a power failure or a lost communication path.
NFPA 72 recognizes three types of supervising station:
- Central station. A comprehensive service, typically from a third party with no stake in the property, covering service contracts, signal handling, inspection, testing and maintenance, and runner service.
- Proprietary. Owned and operated by the property owner, with operators qualified under NFPA 72.
- Remote station. Typically operated by a city or county, and used only where the code authority approves it.
The panel reaches the station through a communicator: a digital alarm communicator transmitter (DACT) on telephone lines, or a cellular, radio or internet communicator.
Fire alarm monitoring requirements: codes and standards
Fire alarm monitoring requirements depend on the codes adopted locally, the occupancy and the authority having jurisdiction. The points below are reference points, not legal advice.
- Retransmission. NFPA 72 (26.2.1.2) requires fire alarm signals received by a supervising station to be retransmitted to the communications center immediately, which the annex explains as without unreasonable delay.
- Runner service. For central station service under NFPA 72, a runner or service technician must arrive within 2 hours of an alarm or supervisory signal that is not restored, and within 4 hours of an unrestored trouble signal. Signals not restored within 8 hours must be reported to the authority having jurisdiction.
- Certification. Current model building and fire codes call for a document showing that central station service is provided, and UL audits selected certified systems of listed companies each year. The local code authority decides which method of monitoring it accepts.
- Communication paths. NFPA 72 requires a single communication path to be supervised at intervals not exceeding 60 minutes, and each of multiple paths at intervals not exceeding 6 hours. A DACT is the one transmission method that needs two channels, while cellular, internet and radio communicators are accepted as single paths. As one state example, New Jersey’s Bulletin 11-2 requires 24 hours of standby power plus 5 minutes of alarm for the panel and communicator, and verified transmission when a new phone service begins.
- Sprinkler supervision. The International Fire Code (903.4) requires valves controlling the water supply for automatic sprinkler systems to be supervised by a listed fire alarm control unit. NFPA 13 (2022, 16.9.3.3.1) lists central station, proprietary or remote station signaling service as one way to supervise valves.
- Systems out of service. Fire codes set rules for when a required system is out of service. Section F901.7, as published by the City of Syracuse, requires immediate notice to the fire department and fire code official, an impairment coordinator, tags at the control unit, and notice to the alarm company and insurer before planned work and on restoration.
Preventive maintenance schedule for fire alarm monitoring
Most monitoring problems start as a quiet fault: a failed phone line, a weak battery or an outdated call list. Planned checks catch these early and keep the test history an inspector expects.
| Task | Recommended frequency | Basis |
|---|---|---|
| Confirm control unit is in normal condition, with trouble and power indicators checked | Weekly | Facility First program default, adjusted per site |
| Visually inspect fire alarm batteries for leaks and corrosion | Monthly | Facility First program default, adjusted per site |
| Inspect and test fire alarm batteries according to battery type | At the interval the NFPA 72 edition in force sets for that battery type, and at least annually | NFPA 72 |
| Visually inspect alarm transmission equipment | At the interval the NFPA 72 edition in force sets, and at least annually | NFPA 72 |
| Automatic communication path supervision signal received by the station | Every 60 minutes on a single path; every 6 hours on each of multiple paths | NFPA 72 |
| Inspect and test the entire fire alarm system | Annually | NFPA 72 |
| Match each test signal against the station’s event history | At every test | Facility First program default, adjusted per site |
| Review trouble and supervisory signal history for repeats | Monthly | Facility First program default, adjusted per site |
| Update emergency call list, keyholders and zone descriptions | Quarterly and after any staff or layout change | Facility First program default, adjusted per site |
| Confirm monitoring certificate, contract dates and line status with the carrier | Annually | Facility First program default, adjusted per site |
The authority having jurisdiction, the manufacturer and the property’s insurer can require more frequent service, and each location’s schedule is set in its program and recorded on every visit.
Signs fire alarm monitoring needs attention
- A communication or path trouble on the panel
- The station reports missed automatic test signals
- A telephone carrier notice about changing or retiring copper line service
- Repeated trouble or supervisory signals from the same zone
- Signals arriving at the station with the wrong zone or location description
- A remodel that added devices without updating the station’s zone list
Records to keep
- Monitoring contract, account number and certificate for each location
- Zone list and emergency call list held by the station
- Station event history for alarm, supervisory and trouble signals
- Inspection and test reports, kept beyond the NFPA 72 minimum so recurring faults can be tracked
- Impairment notices, tags and restoration notices
- Communicator change documentation, including the contractor’s verification of transmission and any acceptance by the fire code official
How Facility First runs fire alarm monitoring across a portfolio
- Account inventory. Each location’s panel, communicator, path, monitoring provider and contract dates are recorded.
- Trouble triage. Trouble and supervisory signals become service requests, triaged by risk and dispatched to a vetted local fire alarm provider licensed in that jurisdiction.
- Planned work. Before testing or repair, the provider places the account on test with the station and notifies the parties local code requires. The account is taken off test at close-out.
- Close-out. The technician photographs the panel in normal condition, and the station’s event history is checked against the report.
- Verification and invoice. Facility First verifies the work and invoices in one format, with records in PostControl.
Work within the client’s approval limits proceeds; larger items are quoted first. Where a failure leaves a location unsecured, McCray can post an officer until the work is complete. See Security by McCray. Annual testing is covered under fire alarm inspection.
What affects the cost of fire alarm monitoring
- Number of locations and accounts consolidated
- Type of supervising station the jurisdiction or insurer requires
- Communication path, such as telephone line, cellular, radio or internet, and whether two paths are needed
- Panel age and whether a new communicator is compatible
- Number of points and sprinkler supervisory signals monitored
- Contract term
- Permits, acceptance testing and contractor verification when a communicator changes
Fire alarm monitoring for retail stores, restaurants and offices
Retail stores. In shopping centers, tenant devices can report through the landlord’s system, so the lease decides who holds the account. After-hours signals need a current keyholder list, and tests are scheduled outside trading hours.
Restaurants. Where a kitchen hood suppression system is connected to the building fire alarm, testing is coordinated between the suppression and alarm providers so a test does not cause a dispatch.
Offices. In multi-tenant buildings the base building system and its monitoring usually belong to the landlord, and tenant work that adds or moves devices must be reported to the alarm contractor and the station.
Frequently asked questions
What is fire alarm monitoring?
It is a service in which a supervising station receives alarm, supervisory and trouble signals from a building’s fire alarm system and retransmits fire alarm signals to the fire department. Under NFPA 72 the station can be a central station, a proprietary station or a remote station.
Is fire alarm monitoring required for a business?
It depends on the building, its occupancy and the codes adopted locally. Where automatic sprinklers are installed, the International Fire Code requires the control valves to be supervised by a listed fire alarm control unit, and the fire code official decides how signals must be monitored.
What happens when the building's phone lines are replaced?
A communicator that relies on a telephone line can lose its path to the station, so transmission is retested after the change. Some jurisdictions, such as New Jersey, require verification through an approved fire alarm contractor, and sites can move to cellular, radio or internet communicators.
How often is a monitored fire alarm tested?
The full system is inspected and tested annually under NFPA 72. The communication path is also supervised automatically, at intervals not exceeding 60 minutes on a single path or 6 hours on each of multiple paths.
Sources
- National Fire Sprinkler Association: Understanding the Role of Supervising Station Alarm Systems and Sprinkler Monitoring
- National Fire Sprinkler Association: Fire Sprinkler Monitoring and Supervision, NFPA 13 and NFPA 72
- UL Solutions: Understanding Central Station Fire Alarm Systems and Ensuring Code Compliance
- New Jersey Department of Community Affairs: Bulletin 11-2, Fire Alarm Transmission and Managed Facilities Voice Networks
- Facilitiesnet: Inspection, Testing, Maintenance: How to Keep Fire Safety Systems Safe (NFPA 72 summary)
- City of Syracuse Fire Prevention Bureau: Fire Protection Systems Out of Service, Code Requirements