[Cialug] OT: Alarm systems

[Nathan C. Smith]

Bingo! They must be AC-type.  

That also explains the missing time after I touched my tongue to the wires.

So no wire to the panel, bummer.

-Nate



> -----Original Message-----
> From: cialug-bounces at cialug.org 
> [mailto:cialug-bounces at cialug.org] On Behalf Of John Roach
> Sent: Thursday, February 05, 2009 9:51 AM
> To: 'Central Iowa Linux Users Group'
> Subject: RE: [Cialug] OT: Alarm systems 
> 
> Depends,
> 
> If they are AC type detectors, they are not made to wire to a 
> panel. They
> usually have one signal wire that that opens a relay on 
> additional detectors
> to trigger the sounder on the additional alarms. I have not 
> run across many
> installs that are actually wired with the signal line.
> 
> If you take it of the mount, you should have your white and 
> black connected
> along with the ground. If there is a reed wire that is hooked 
> up, it is
> normally your signal line. If it is deadheaded in the box, it 
> has not been
> run.
> 
> 
> If they are DC, there will be a 4 or 6 wire in to the smoke 
> detector, 2
> carry power, they other two are used to connect to the NC or 
> NO connection
> depending on the type of detector. Most heat detectors are 
> just wired with 2
> wires. They are either a NC or NO connection to the panel.
> 
> John Roach
> 
> We make technology work for you.
> -----Original Message-----
> From: cialug-bounces at cialug.org 
> [mailto:cialug-bounces at cialug.org] On Behalf
> Of Nathan C. Smith
> Sent: Wednesday, February 04, 2009 12:13 PM
> To: 'Central Iowa Linux Users Group'
> Subject: [Cialug] OT: Alarm systems 
> 
> 
> Anyone familiar with household alarm systems?  (I know at 
> least one person
> is)
> 
> In houses that are wired or pre-wired for Alarms, the smoke 
> detectors are
> often wired too.  Are they wired just for power or are they wired with
> signal cable to so that they can connect to the alarm system 
> as well?  Mine
> seem to be wired for power but I haven't taken a multimeter 
> too them yet.
> 
> Further, would a signal cable be an on-off type of thing or 
> would there
> actually some kind of coded digital or analog signal on the 
> smoke detectors?
> I suppose it could depend on the brand and price of the smoke 
> detectors?
> 
> -Nate
> 
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