|A home fire alarm system is usually part of a total security system providing burglary protection in addition to fire protection. Such a system supervises doors, windows, and spaces within the home for break-in and may provide monitoring services by dialing your telephone to report a fire or intrusion to a security office, where it will be reported to your local police or fire department.
Due to their relatively high cost, these systems are generally found only in larger homes. The system can cost $1000 or more to install, with 24-hour monitoring service adding $15 to $20 per month.
Components of the System
These systems consist of a central control panel to which smoke alarms and heat detectors are connected, along with bells or horns that are activated when the system triggers an alarm. Other sensors associated with the burglary functions connect to doors and windows or monitor rooms for motion or body heat. The control panel operates from house power but also usually contains an emergency battery which can operate the system for about 24 hours during a power outage.
The basic requirements for the number and locations of alarms are exactly the same as with the self-contained alarms discussed previously. The difference is that a fire alarm system gives you more flexibility to locate additional alarms and additional bells or horns (or flashing lights, should a person in the household be hearing impaired).
Fire alarm systems that provide remote monitoring services can also be used to provide medical alert services. Here a person with health problems who lives alone carries a radio transmitter that can trigger the system in case they need assistance. Signals received at the monitoring station are identified by type (fire, burglary, medical alert) so that the proper response can be made.