Customer Reviews For The First Alert SC9120B Hardwired Combination Smoke/Carbon Monoxide Alarm
Luis P
January 27, 2023Unit tested as described in the instructions. Unit fitted nicely on the same place of the old unit without having to do any additional alteration and installation was quite easily by following all the steps in the installation instructions.
Paco C.
November 1, 2022No fuss no muss
Replaced existing hard wire detector. The old detector was at the end of life and was triggering at random times. Since replacement all is well.
Isabel M T
October 26, 2022Easy To Install
Installed 2 of them, one in the upstairs hallway and one in the main living area hallway for safety measures.
Mary H
October 6, 2022Smoke CO alarm replace
These all arrived in a timely manner and worked perfectly when we installed by ourselves.
Sterling C
September 22, 2022Peaceful Existence
The speed with which my order was filled quite surprised me. The gentlelady who took my call was, indeed, very gentle. The item arrived I plugged it in, putting an end to the nuisance of the chirp. Peace has returned.
Andre M
September 21, 2022smoke/carbon monoxide alarm with battery backup- SC9120B
Very good so far right out of the box
michael t
September 7, 2022smoke alarm/carbon monoxide dector
Very happy with first alert products for the past seven yrs.
James P
August 26, 2022Safety
I purchased First Alert smoke and monoxide alarms for my home. It's a great feeling knowing the safety that was installed ,not only for saving lives,but home protection as well.
Joseph P
August 15, 2022mfg date is awesome
Quick delivery, awesome prices and the mfg date is within a month or 2 of ordering date, better than getting it at the hardware or big box stores where the mfg date is 4-5 years old
Frederick A. R
July 19, 2022Replacement Smoke /CO-2 Detectors
Terrific product. Very effective to assure your safety.
Richard D
July 15, 2022Fast & easy order
We were very pleased with the ease of ordering & the fast shipping. 😊
Robin G
June 22, 2022great
have used tis brand for many years and will continue, very reliable .
Sandra D
May 18, 2022Smoke Alarm
Received quickly. Easy to install. Works well
Robert D
May 6, 2022Smoke alarms
Replaced the old ones
glenns k
April 26, 2022very happy with product,fast delivery, simple change out
Elizabeth R
April 19, 2022Great experience
Got what I needed quickly and easily.
Arminda P
April 13, 2022Smoke and MO ALARM
Dependable, efficient, replaceable battery.
James O
February 28, 2022Repeat Customer
Great prices, Name Brand, excellent packaging. Fast shipping.
Wayne G
February 14, 2022First Alert Hardwired Combination Smoke/Carbon Monoxide Alarm with Battery Backup - SC9120B
Install instructions are good. One unit had missing battery.
Jeeva V
February 11, 2022First Alert Hardwired Combination Smoke/Carbon Monoxide Alarm with Battery Backup - SC9120B
I bought 7 SC9120B Smoke/Carbon Monoxide alarm in Jan 2022 and installed them. All are working fine. No more chirping sound.