[RFI] First Alert Wireless Smoke/CO Detectors

Jim Brown jim at audiosystemsgroup.com
Tue Dec 4 22:35:28 EST 2018

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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