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6-Pack First Alert Hardwired Smoke Detector Alarm w/ Backup Battery

$45.50
$58.32
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Amazon.com has 6-Pack First Alert Hardwired Smoke Detector Alarm w/ Backup Battery (9120B6CP) on sale for $45.49. Shipping is free. Thanks bikepoet
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  • Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast-flaming fires and alerts you with an 85-decibel alarm
  • Includes a 10-year Warranty.
  • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
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Edited May 30, 2019 at 04:27 PM by
Since smoke detectors should be replaced every 10 years, and batteries cost money too, I was waiting for a good deal on the 6 pack (less than $8 per detector) to replace my house's hardwired smoke detectors. I use a Leeo device for internet connectivity, and I have a separate CO alarm, so these will be exact replacements for what I have now. This is the almost lowest price according to the camels. Normal price as of late was around $55.

Amazon:

https://www.amazon.com/First-Aler...000KKHWLU/

Walmart:

https://www.walmart.com/ip/BRK-91...k/21797418
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Created 05-02-2019 at 12:28 PM by bikepoet
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I replaced my whole lot 3 years ago when one gave me a rude wakeup call at 1 AM and I realized they were ~ 10 years old anyway. It seems without getting CRAZY expensive you can choose between ion/photo OR photo/CO. Looking online it seems that CO detectors should be placed about 5 feet from floor level optimally, but smoke detectors are usually on the ceiling or at least rather high,.
8 Helpful?
No carbon monoxide. Need carbon monoxide/smoke combo if you know of a deal, thanks.
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#3
No carbon monoxide. Need carbon monoxide/smoke combo if you know of a deal, thanks.
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Quote from Mummel
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No carbon monoxide. Need carbon monoxide/smoke combo if you know of a deal, thanks.
Seconded
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#5
ionization
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#6
Quote from Mummel
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No carbon monoxide. Need carbon monoxide/smoke combo if you know of a deal, thanks.
Quote from Arcanlaw
:
Seconded
I replaced my whole lot 3 years ago when one gave me a rude wakeup call at 1 AM and I realized they were ~ 10 years old anyway. It seems without getting CRAZY expensive you can choose between ion/photo OR photo/CO. Looking online it seems that CO detectors should be placed about 5 feet from floor level optimally, but smoke detectors are usually on the ceiling or at least rather high,.
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#7
Just moved into a new house and all the smoke detectors are 15 years old and I have 11 of them. This is perfect - thanks OP.
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#8
Quote from UserID00
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ionization
A 6-pack of the dual ion/photo are 3x the price.

Just realized my detectors are dated 2001. Thanks for posting this deal as it made me realize I need to replace the entire house's detectors.
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Last edited by Jayman007 May 2, 2019 at 02:31 PM.
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#9
Quote from UserID00
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ionization
Good to get that up here. People should know, you should have at least one of each kind, ionization and photoelectric. Ideally, combo units so your coverage is all over the residence.
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Quote from danielem1
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Good to get that up here. People should know, you should have at least one of each kind, ionization and photoelectric. Ideally, combo units so your coverage is all over the residence.
It's plain as day in the product description that these contain an ionization sensor. What that means to most people is unknown.

Here is more details as to what the 2 types of smoke detectors use for sensors.
https://www.nfpa.org/Public-Educa...toelectric
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#11
Quote from Jayman007
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It's plain as day in the product description that these contain an ionization sensor. What that means to most people is unknown.

Here is more details as to what the 2 types of smoke detectors use for sensors.
https://www.nfpa.org/Public-Educa...toelectric [nfpa.org]
Then there's this article advising against ionization:
http://www.propertyevaluation.net...ences.html

I didn't know there were two types until I came upon this thread. My house only has 3 smoke/CO units, one in the hallway of each floor. I replaced them when I moved in, and now I see that I used photoelectric units (the z-wave ones). I'm looking to install hardwired units in some of the individual rooms. I might still go for these based on the price alone, and since I already have photoelectric ones.
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#12
These were $4.99 each on Black Friday. Easy to install. Plenty of feedback on that thread as well on these specific units.
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#13
they may be hardwired, but they still need a battery. So you still need to replace it annually.

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#14
This is a very good deal. Costco is 59.99 for same.
However, I read the articles and changed all of mine to Photoelectric.
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#15
Thanks to all on this thread for possibly saving my life. But dang it if you didn't just give me a lot to spend and installation work. I mean, I love my kids... so how could I possibly live another week with my old OLD OLD ionization alarms. Thanks again. ;-)
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