[600MRG] (Fwd) Smoke Alarms
John Langridge
jlangridge at sbcglobal.net
Tue Oct 21 12:25:31 CDT 2014
can we get a detailed clarification on what "not terminated properly" means?
John
________________________________
From: Kenneth G. Gordon <kgordon2006 at frontier.com>
To: 600MRG at w7ekb.com
Sent: Tuesday, October 21, 2014 12:14 PM
Subject: [600MRG] (Fwd) Smoke Alarms
Here is the most recent correspondence I have received on the issue of SAI
(Smoke Alarm Interference).
Perhaps this will help?
Ken W7EKB
------- Forwarded message follows -------
To: <kgordon2006 at frontier.com>
Subject: Smoke Alarms
Date sent: Tue, 21 Oct 2014 11:39:01 -0500
Ken,
Not sure if it applies to your situation, but I had my security system (wired) smoke
detectors replaced. First, all smoke detectors have a finite lifetime. On the detectors
marketed today, the life cycle is even programmed into the battery type units (they give off
an audible alarm that you initially take as a low battery warning). On the security system
units, I was having false trips due to their age which was why I was having them replaced.
So age might make the detectors more susceptible to RFI.
Secondly, when my new units were installed they were not terminated properly which was
allowing the RFI. Once we terminated the line properly, the RFI ceased. I have three
detectors on the same line to the security system which would be the normal installation
configuration. So I am suggesting that the termination of the smoke detector(s)
connection circuit be checked if applicable.
------- End of forwarded message -------
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