You are aware that first alert is owned by kiddie now right?
they put out units under each name and with varying prices.
just like most THINK FIREX is junk WRONG its also owned by kiddie.
As for the resistor it was a big one in a thousand watt gaming power supply
and let me tell you between it buring up and the plastic around it from the
heat it created it was a nice smoky mess
--
AL'S COMPUTERS
"Jeff Liebermann" wrote in message
...
On Thu, 5 May 2016 01:57:07 -0400, "Andy" wrote:
Interesting facts wrong but its ok
Nice diplomacy, but they're either facts, or they're wrong. Can't
have both.
most good smoke detectors like first alert the only brand i use i have the
combo detector both ionization and photoelectric hard wired with battery
back up unit.
The combo units are best. The photoelectric detectors are faster but
ionization detectors are more sensitive. The combination also
decreases false alarms as a real fire will trigger both, but chemical
and condensation problems will only trigger one or the other.
But even my battery only ionization unit that is directly over the pc went
off once when a test power supply blew a resistor and the smoke set it off
before i could even get to the window to open it to vent the smoke out of
the room
Egads. How much smoke did this resistor generate? What physical size
resistor? When I get a resistor too hot, it usually makes a small
puff of smoke before it blows. Unless it were wrapped in an oily rag
or the resistor was unusually large, there's not enough material in a
small ( 1/4 watt) resistor to produce much smoke.
how fast they react ALL DEPENDS on 2 Things AGE OF UNIT all units should
be
replaced EVERY 10 YEARS. in fact in my state and city it's a code
requirement.
Yep. However, the problem was not delay time or sensitivity. It was
that many battery powered smoke alarms were just sitting there with
dead batteries. Replacing the battery once per year was considered a
major imposition to many homeowners. To solve that problem, the
manufacturers were required to install use a non-replaceable Lithium
battery, in trade for requiring the homeowner to buy all new battery
operated smoke detectors.
Second is brand of unit if you get the cheap 8 dollar one at the dollar
store yes it wont react as good as the brand name first alert that costs
you
20 or more dollars.
that is a proven fact.
Well, I prefer Kidde brand to First Alert. The main reason is that I
wanted a photoelectric detector with built in carbon monoxide
detection ability. I also wanted something that would not false on
kitchen cooking and my wood burning stove. I picked the Kidde Model
P3010K-CO ($40) for the house and shop:
http://www.kidde.com/home-safety/en/us/products/fire-safety/smoke-alarms/p3010k-co/
Ask me in about 8 years and I'll let you know how well they work. I
tested one with a galvanized pail full of newspapers. About 4 minutes
for the alarm to sound. So far, no falsing from normal cooking or the
woodburner. However, when I accidentally set fire to a yam in the
microwave, it set off the alarm in about 1 minute after I removed it
from the oven:
http://802.11junk.com/jeffl/pics/drivel/slides/burned-yam.html
In both cases, the house was full of smoke before the alarm finally
went off.
You might be interested in these stories. The first is from 2007 and
is very much out of date. Yet many people still have similar old
smoke alarms. Newer alarms are allegedly faster to respond:
"Deadly Delay"
http://www.wthr.com/global/Story.asp?s=6552929
Notice that the fastest response was 16 minutes. See Part 2 at:
http://www.wthr.com/global/Story.asp?s=6554435
Test results
Test #1
First Alert dual sensor 18:00
First Alert photoelectric 23:38
First Alert ionization 33:45
Kidde ionization 27:16
Kidde dual sensor 28:50
Kidde photoelectric 29:30
Test #2
First Alert photoelectric 16:21
First Alert dual sensor 16:38
First Alert ionization 42:10
Kidde photoelectric 33:30
Kidde dual sensor 34:30
Kidde ionization 38:39
In 2012, the station continued the smoke detector campaign and
testing:
http://whnt.com/2012/07/16/smoke-detector-fail-a-taking-action-investigation/
The final result AFTER smoke was present:
Ionization: 17:00 minutes
Photoelectric: 2:48 seconds
Much better, methinks.
But the 8 dollar one will go off if you boil water on the stove the better
unit wont
--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558