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Application Note #18           | Products | Application Notes |

Supplemental Fire Alarm System uses Powerline Carrier Modules and requires no new wiring.


Supplemental  
Fire Alarm System  
provides sound devices  
in each family living  
unit using CEPCO's  
Powerline Carrier that  
require no new wiring.  

Install a  
Miniature Transmitter  
for activation by the  
Primary Fire Alarm  
System, and install  
a Buzzer Module  
in each family unit.  

Use interconnected
Smoke Detectors to create
an ADA and HUD approved
Supplemental Fire
Alarm System

Although an apartment or condominium building has a fire alarm system that sounds bells in the hallway and common areas, it is often difficult for residents to hear these bells behind closed doors, through insulated walls and over radio, television, air conditioner, or other noises. Even increasing the sound level of the hallway bells far above the requirements of NFPA (National Fire Protection Association) 72A often fails to meet the sound level recommendation for the family living units. The best way to insure that the fire alarm is heard is to install alarm-sounding devices in all the units.

In existing buildings, installing sounding devices within the family living units can be very expensive, disruptive and unattractive if it involves the running of new wires to the added sounding devices. These disadvantages, plus the fact that the sound level of the building alarm within the family living units is only a recommendation of NFPA 72A, usually results in no action to supplement the building alarm system and a dangerous condition continues to exist without correction. This is especially dangerous if an occupant has a hearing impairment.

CEPCO's Powerline Carrier Technology allows the installation of sounding devices within the family living units without the expense and inconvenience of adding new wiring, by utilizing the existing power wiring to communicate to plug-in sounding devices.

When the building fire alarm system goes into alarm, the powerline carrier transmitter unit (Miniature Transmitter, Model TX-BUG2) is activated, thereby placing a signal on the existing ac power wiring that command the plug-in sounder (Buzzer Module, Model RX-BZM) in each of the family units to turn on. The Buzzer Module sounds a 90db sound level at 10 feet from the module, which is a far louder alarm than the 15db above average ambient which is recommended for inside the family living units by NFPA 72A.

Smoke Detector Interconnect Module, Model TR-SAI

Using the Model TR-SAI   to interconnect Smoke Detectors, you can create an ADA and HUD approved Supplemental Fire Alarm System by plugging-in the Model TX-BZM , Buzzer Modules (set to the same code as the Model TR-SAI's) at any electrical outlets where an alarm is required (Hallways, Stairways, Bathrooms, Common areas, etc.). The Buzzer will sound (90db "beeping") whenever any of the Smoke Detectors are activated by smoke, since this alarm signal is present on the electrical wiring throughout the building. You may add on additional Strobes, Horns, or other Fire Appliances as required, using the Model RX-RAM , Model RX-RCM , or Model RX-CCO . The Supplemental Fire Alarm System can be triggered by hand using a Model TX-PBT , Pushbutton Transmitter.

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