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Posted by ransley on April 28, 2008, 8:36 pm
> I have a 20 year old security system that includes 3 smoke alarms, one is
> the ion type the other two are optical sensors.
>
> They all blink at regular intervals, seemingly indicating that all is well=
.
> Or is it?
>
> I suspect that the blinking lights only indicate that the circuits are
> working properly. But, does that mean they will actually sound off in the
> presence of fire/smoke??
>
> How can I be sure that I can rely on them when there is a fire or smoke?
> Just what does the blinking LED mean??
>
> While googling, I noticed that some people recommend new smoke detectors
> every ten years or so. Is there any rational need for this, or is it just =
an
> urban myth? Many of my electronic components have lasted more than 20 year=
s.
> Why should smoke detectors conk out after ten years?
>
> --
> Walterwww.rationality.net
> -
Its a myth to replace them by time, my security co wanted me to
replace them from a false alarm , when a spider or dust set a false
alarm, you gotta know techs make a kickback on selling stuff. Mine can
be tested with a magnet, but make smoke and see what happens. A
cigarette, a candle, a metal can with something small burning might do
it.
Companies make their most money on new instals, and they all are
liars, on commission. A good system will last till an electrical part
failure or a sensor is crudded up with grease, do your own tests
first, my co wanted near 200 $ US a sensor, I said Good By for today,
I will check it out. That happened several times in the last 10 years
with Honeywell and my 3 false alarms.
So do your own test, its like your New car auto dealer selling you
1000$ worth of uneeded maintenance, which I have seen [ many times] ,
and they tried to pull on me.
Mine is hard wire, Honeywell, monitored, twice techs were out for
dust or spiders setting off false alarms and wanted 1000$ for new
sensors for what still works today. Gee I guess I gotta do a 08 check
over soon, Thanks for reminding me pal. But dont get suckered, test em
your self. Learn your set up. So you dont get suckered.
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