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Re: [RFI] First Alert Wireless Smoke/CO Detectors

To: rfi@contesting.com
Subject: Re: [RFI] First Alert Wireless Smoke/CO Detectors
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Tue, 4 Dec 2018 19:35:28 -0800
List-post: <mailto:rfi@contesting.com>
I have no experience with this company, but security/alarm products and systems are notorious for being susceptible to RF.  If the units are connected to wires or power, they are almost certain to be bad news. If they run on batteries with NO wires connecting them to anything, there's a chance that they're OK.

The fundamental issue here is that they need wire to form an antenna to radiate or receive RF.

73, Jim K9YC

On 12/4/2018 7:09 PM, Ray Mikula wrote:
Does anyone have any experience with the Wireless First Alert Smoke/CO
detectors in regards to RFI?  This is the setup where you have multiple
smoke detectors and if one unit alarms a wireless signal is send via a mesh
network to trigger the alarm on all units.  My smoke alarms are a good bit
older than 10 years and it is time to replace.  The concept of one alarm
triggering all makes good sense to me unless they generate a bunch of nasty
RFI.



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