Boston Master Box, Municipal Radio Box & 2-Hour UL Listed Fire Alarm Runner Service
In the City of Boston, Cambridge, and dozens of Greater Boston municipalities, commercial, institutional, and multi-family buildings connected to a Municipal Fire Alarm Master Box (or mandated by the AHJ to maintain a UL Central Station Certificate) are legally required under NFPA 72 Section 26.3.8.3 and local Fire Prevention regulations to hold an active contract with a UL Listed Fire Alarm Service Company capable of dispatching a qualified runner to the premises within 2 hours, 24/7/365. Electrical Dynamics, Inc. is an official UL Listed Fire Alarm Runner Service provider.
What Is a UL Listed Fire Alarm Certificate & Why Do Boston / MA AHJs Require It?
Unlike a residential or light-commercial dialer contract that merely notifies a call center, a UL Listed Fire Alarm Service Certificate is an audited compliance document issued through Underwriters Laboratories verifying that your facility’s fire alarm system is installed, tested, maintained, and backed by 24/7 physical technician dispatch in strict accordance with NFPA 72. The Boston Fire Department (BFD Fire Alarm Office at 59 Fenway), Cambridge Fire Prevention, and commercial property insurers (FM Global, Chubb, Travelers) routinely require an active UL Certificate for Certificate of Occupancy issuance and annual policy renewal.
- Guaranteed 2-Hour On-Site Runner Response: When an alarm, supervisory, or trouble condition occurs, EDI dispatches a licensed MA fire alarm technician to arrive on-site within 2 hours to reset the municipal master box, clear faults, or restore protection.
- Eliminates Costly Municipal Fire Watch Fines: Under 527 CMR 1.00, an unaddressed fire alarm outage exceeding 4–8 hours forces the building owner to post a paid municipal detail or evacuate. Our 24/7 runner service resolves ground faults, bad initiating devices, and NAC troubles immediately.
- Official UL Certificate Issuance & Annual Audit Management: EDI maintains all NFPA 72 Section 7.8.2 inspection records, device sensitivity logs, and standby battery load calculations required by UL field auditors and municipal fire inspectors.
Hardwired Gamewell Telegraph Master Boxes vs. AES IntelliNet Wireless Radio Boxes
Across Massachusetts, municipalities operate either traditional 100-milliampere Series Telegraph Loop Master Boxes (Gamewell local-energy / shunt-type boxes) or modern AES-IntelliNet / Keltron long-range wireless mesh radio transceivers connected directly to the municipal fire dispatch center.
- Municipal Master Box Disconnect & Re-Connect Protocol: Authorized coordination with municipal Fire Alarm Superintendents prior to quarterly/annual testing to prevent false apparatus dispatches.
- Gamewell Mechanical Movement & Trip-Coil Servicing: Winding, trip-coil current calibration, shunt switch verification, and weatherproof housing maintenance.
- AES 7788F / 7707 Wireless Mesh Radio Transceiver Installation: Antenna gain profiling, VSWR testing, 24-hour/60-hour standby battery compliance, and dual-path central station supervision.
NFPA 72 & Massachusetts Municipal Master Box Runner SLA Matrix
| Signal Classification | NFPA 72 / BFD Requirement | EDI 24/7 UL Runner Action | Maximum Response SLA |
|---|---|---|---|
| Fire Alarm Activation | Immediate municipal dispatch & master box reset after BFD clearance | On-site technician resets FACP & municipal master box, replaces fused links/pull rods | ≤ 2 Hours On-Site (24/7/365) |
| Supervisory Signal | Tamper switch, low building temp, or fire pump off-normal | On-site troubleshooting of OS&Y/PIV tamper, dry-pipe low air, or pump controller | ≤ 2 Hours On-Site |
| System Trouble Condition | Ground fault, open NAC/SLC loop, AC power loss, or battery failure | Isolates field wiring fault or replaces failed power supply/battery within NFPA window | ≤ 2–4 Hours (Prevents Fire Watch) |
| Scheduled Quarterly / Annual Test | 527 CMR 1.00 & NFPA 72 Table 14.4.3.2 | Coordinated municipal box cutout, 100% device testing & official Record of Completion | Scheduled Facility Window |
Submit Specifications — Boston Master Box, Municipal Radio Box & 2-Hour UL Listed Fire Alarm Runner Service
Direct routing to Electrical Dynamics Estimating (info@electricaldynamics.com), 24/7 Service & Fire Alarm (service@electricaldynamics.com), or EDI Network Systems (telecom@electricaldynamics.com).
