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Pros & Cons
Pros
First alert brk 3120b hardwired smoke detectors. Interconnected of these babies by myself was extremely easy. If you have a different vendor's wiring harness in your ceiling you could turn off the power, and install the new 3 wire harness, and plug in... Read More
Easy to install and all seem to be working properly. Batteries are in an easy slide out tray. Test the units every week (or month for some of us) by pressing the test button with a long pole.
Cons
According to the owner's manual, 3 chirps every five minutes means a malfunction. No one knows this as first alert doesn't say anything in owners manual.
These units 3120b should be recalled. These things have radioactive components, so they likely wind up in the trash where they’ll poison us all. What a piece of junk. Lasted about 6 months and a week.
Writing this review at 1:25am after being rudely awaken by another false alarm. Not a great thing to become desensitized to. I'm fairly certain these alarms are just messing with me at this point.
Highlights
Quality
So far i am satisfied with the purchase
I was refunded my purchase and did not have to return the product
I bought first alert because they are a quality product
Im tickled that i finally picked the right product
Price
The price was right on this one so i took a chance
Packaging/appearance
I needed to replace an old expired smoke detector from the mid80s
Competitiveness
These are consumer reports highest rated model
Overview
- How are reviewers describing this item?
first, false, two, easy and alert. - Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.
- Our engine has detected that Amazon has altered, modified or removed reviews from this listing. We approximate total reviews altered up to 30483.
- Our engine has analyzed and discovered that 78.7% of the reviews are reliable.
- This product had a total of 2,193 reviews as of our last analysis date on Aug 22 2022.
Helpful InsightsBETA
Posted by a reviewer on Amazon
But it wouldnt stop going off
Posted by a reviewer on Amazon
Got these as the new house had 3 that were original install when it was built in 1995
Posted by a reviewer on Amazon
The temp alarm mute button is a godsend for when cooking goes wrong and the smoke is known temporary problem
Posted by a reviewer on Amazon
On power up it took a minute out two with them beeping as they communicated with each other but this eventually stopped
Posted by a reviewer on Amazon
There was no mention of this in the instructions and i thought i’d done something wrong
Posted by a reviewer on Amazon
Pressing the reset button on the source unit silenced all the others
Posted by a reviewer on Amazon
I purchased the first alert 3120ff to replace 10 year old model 9120b which had only a single sensing capability
Posted by a reviewer on Amazon
The pigtail connections are the same as the 9120 but the installation ring is not
Review Count History
Price History
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