Local Communications Failure Annunciation
What’s the Best Way to Meet NFPA’s Requirements?
October 25, 2018
By Aaron McGhee, Product Manager, DMP Control Panels
Cellular alarm communicators aren’t made with keypads, nor are they designed with annunciators. But if there’s a communications failure for any reason on a fire system, the National Fire Protection Association requires the cellular communicators to sound a local annunciation. What’s the best way to comply? Here are your options.
When you’re updating an existing
#1) The IAMAUD Audible Annunciator Module by Space Age Electronics.
Once this device is wired up to the DMP communicator, the system’s output will trigger the annunciator every time there’s a communication failure. It’s available directly from Space Age Electronics or any security products distributor, like ADI. Priced at roughly $65 each, it’s also compatible with CDMA
#2) Tie the CellCom’s Output to the Ring Terminal of the CellCom’s Terminal Strip
Instead of purchasing and installing the annunciator module, there’s another option requiring no programming and very little labor. Your only requirement is using DMP’s communicators with the Rev 4 Level E hardware, which would’ve been available after May 2016. This option takes advantage of the telco phone line that’s already connected from the host panel to the communicator.
To achieve annunciation, take a piece of wire and tie the output to the ring terminal of the CellCom’s terminal strip. Whenever there’s a communication failure, it will short that ring terminal to ground, which will drop the phone line voltage on the host panel. As a result, the host panel goes into a communication failure and annunciates at its keypads.
The next time you’re updating existing panels, we know you’ll need a solution to meet NFPA’s annunciation requirements. Depending on the particulars of the upgrade, one of these two will do exactly that.
If you’d like to learn more, please contact DMP Inside Sales at 877-757-4367 or at InsideSales@dmp.com.