Cellular Communication For Fire Alarm Signals

Cellular Communication For Fire Alarm Signals

This post is brought to you from one of our 2021 Sponsors. Telguard helps independent security dealers guard what’s most dear to them—their reputation, their customers and their bottom line. They do this by offering the industry’s most versatile platform, first-class...
Monitoring Invalid Alarms

Monitoring Invalid Alarms

This post is brought to you from one of our 2021 Sponsors. All American Monitoring has been family owned since 1973. They know the alarm business well, and the work it takes to build a business. Collaboration is the cornerstone of the company philosophy, because when...
What is “Runner Service”?

What is “Runner Service”?

Runner service is a service required for Proprietary Supervising Station and Central Supervising Station Fire Alarm Systems where an individual is dispatched to the protected premises when signals are received at the supervising station. The runner is dispatched by...
Communications Methods for Fire Alarm

Communications Methods for Fire Alarm

NFPA 72 currently recognized four methods of communication from the protected premises to the supervising station for fire alarm systems: Performance-Based Technology, Digital Alarm Communicator Systems, Two-Way Radio Frequency (RF) Multiplex, and One-Way Private...
Beam and Joists

Beam and Joists

NFPA 72 defines “ceilings” in Chapter 3. A “level” ceiling has a slope of less than or equal to 1 in 8. A “smooth” ceiling is uninterrupted by continuous projections extending more than 4 inches below the ceiling. When a ceiling surface has solid projection more than...
Positive Alarm Sequence and Presignal Systems

Positive Alarm Sequence and Presignal Systems

Positive alarm sequence and presignal systems delay occupant notification to allow for time for investigation of a fire. While both systems delay occupant notification, the function of the features and where they are permitted are different. Presignal systems sound an...