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About this product:
10-year limited warranty
Rated 4.7/5 (2,351 total ratings)
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Our research indicates that this offer is $16.83 lower (40% savings) than the next best available price from a reputable merchant with prices starting from $41.99
About this product:
10-year limited warranty
Rated 4.7/5 (2,351 total ratings)
About this store:
Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
Model: First Alert BRK SC7010B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup , White
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Hardwire are interconnected so if one goes off, it sets off all the others as well. Also modern electrical codes for new houses require interconnected hardwired smoke alarms in all bedrooms.
You should buy them when you need them. Typically these things will give false alarms when they expire. You'd basically be eating into the 10 year warranty if you buy and hold these things. First Alert can also choose to not honor that warranty if your devices were in storage the whole time.
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Quote
from hex4def6
:
What's the benefit of a hardwired smoke alarm vs the 10 year battery ones?
Hardwire are interconnected so if one goes off, it sets off all the others as well. Also modern electrical codes for new houses require interconnected hardwired smoke alarms in all bedrooms.
Hardwire are interconnected so if one goes off, it sets off all the others as well. Also modern electrical codes for new houses require interconnected hardwired smoke alarms in all bedrooms.
Some of the 10 year battery ones are wirelessly interconnected, so in those cases (esp in older homes) the battery one may be better
How does the expiration of these detectors work? Does it start once they're manufactured or when they're installed? Wondering if I should buy a few when they're on sale in anticipation of having to replace mine down the road or if it's better to just buy them fresh at the time I need them.
How does the expiration of these detectors work? Does it start once they're manufactured or when they're installed? Wondering if I should buy a few when they're on sale in anticipation of having to replace mine down the road or if it's better to just buy them fresh at the time I need them.
You should buy them when you need them. Typically these things will give false alarms when they expire. You'd basically be eating into the 10 year warranty if you buy and hold these things. First Alert can also choose to not honor that warranty if your devices were in storage the whole time.
How does the expiration of these detectors work? Does it start once they're manufactured or when they're installed? Wondering if I should buy a few when they're on sale in anticipation of having to replace mine down the road or if it's better to just buy them fresh at the time I need them.
Purchase date, or manufacturing date if no receipt
Hardwire are interconnected so if one goes off, it sets off all the others as well. Also modern electrical codes for new houses require interconnected hardwired smoke alarms in all bedrooms.
Kidde units gave false alarms all the time. Only way to silence is brute-force disconnecting them one-by-one until the culprit is determined. Looks like these have the same issue: https://www.amazon.com/gp/product...merReviews
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Quote
from tanman99
:
How does the expiration of these detectors work? Does it start once they're manufactured or when they're installed? Wondering if I should buy a few when they're on sale in anticipation of having to replace mine down the road or if it's better to just buy them fresh at the time I need them.
Quote
from SensibleSummer934
:
You should buy them when you need them. Typically these things will give false alarms when they expire. You'd basically be eating into the 10 year warranty if you buy and hold these things. First Alert can also choose to not honor that warranty if your devices were in storage the whole time.
Manufacture.
The 10 year life is a rule of thumb but I find generally good for ionizing detectors - the ones that use a radioactive source (which is most detectors, but also the "older" tech). Photoelectric sensors use light to detect interference (e.g. smoke particles but could be anything including water vapor and bugs). The reason ionizing detectors go bad is that the radioactive source decays to the point where it isn't as effective. For photo detectors, I guess they could go bad but it's more likely that they just get full of dust (or bugs, spiders like to make homes in them).
For as infrequent as you need to do it, spending $200 or whatever (dep. on the number of units you have) every 10 years or so is cheap insurance. - when you suspect one is bad, just change them all out.
Kidde units gave false alarms all the time. Only way to silence is brute-force disconnecting them one-by-one until the culprit is determined. Looks like these have the same issue: https://www.amazon.com/gp/product...merReviews
I want my Americium-241 back!
You can still buy dual units - both photo and ionization -but they are more expensive obviously. Last I looked you could actually buy units with all 3 (photo, ion and CO) but those were SUPER expensive.
How does the expiration of these detectors work? Does it start once they're manufactured or when they're installed? Wondering if I should buy a few when they're on sale in anticipation of having to replace mine down the road or if it's better to just buy them fresh at the time I need them.
I just purchased some firstalert detectors. It clearly states in the manual that they are good 10 years from *install date*
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Our community has rated this post as helpful. If you agree, why not thank old_
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I want my Americium-241 back!
Our community has rated this post as helpful. If you agree, why not thank Dr. J
The 10 year life is a rule of thumb but I find generally good for ionizing detectors - the ones that use a radioactive source (which is most detectors, but also the "older" tech). Photoelectric sensors use light to detect interference (e.g. smoke particles but could be anything including water vapor and bugs). The reason ionizing detectors go bad is that the radioactive source decays to the point where it isn't as effective. For photo detectors, I guess they could go bad but it's more likely that they just get full of dust (or bugs, spiders like to make homes in them).
For as infrequent as you need to do it, spending $200 or whatever (dep. on the number of units you have) every 10 years or so is cheap insurance. - when you suspect one is bad, just change them all out.
I want my Americium-241 back!
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