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Re: 2,3,4 wire smoke detectors?

Subject: Re: 2,3,4 wire smoke detectors?
From: BoyntonStu <stu@xxxxxxxxxx>
Date: Tue, 17 Jul 2007 10:49:50 -0700
Newsgroups: alt.security.alarms
References: <1184630861.960917.43610@xxxxxxxxxxxxxxxxxxxxxxxxxxx> <1184639245.057598.325390@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>

On Jul 16, 10:27 pm, Jim <alarmi...@xxxxxxx> wrote:
> On Jul 16, 7:07 pm, BoyntonStu <s...@xxxxxxxxxx> wrote:
>
> > My smoke detectors have 3 wires coming out of them.
>
> > Black, white, and yellow.
>
> > Black and white fr 110VAC and the yellow for interconnectivity.
>
> > All I see discussed is 2 and 4 wire.
>
> > Would someone please unconfuse me?
>
> 2 and 4 wire smoke detectors as referred to in this group, are low
> voltage devices used in alarm installations. The one's you are talking
> about are 110vac units.

Do 2 and 4 wire units have battery backup?

References:
- 2,3,4 wire smoke detectors?
  - From: BoyntonStu
- Re: 2,3,4 wire smoke detectors?
  - From: Jim

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