Re: 2,3,4 wire smoke detectors?

["Doug" <not@xxxxxxxx>]

Not that I'm aware of, they draw their power from the control panel, which
does have, or should have a battery back up.

Doug

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"BoyntonStu" <stu@xxxxxxxxxx> wrote in message
news:1184719031.928899.180250@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> 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 any 2 or 4 wire units have battery backup?
>