Re: 2,3,4 wire smoke detectors?

["Crash Gordon" <webmaster@xxxxxxxxxxxxxxxxxxxxx>]

it would be weird if they did





"BoyntonStu" <stu@xxxxxxxxxx> wrote in message
news:1184757483.854957.243800@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?
|