Customer Reviews For The First Alert Hardwired Ionization Smoke and CO Alarm with Battery Backup

328 Reviews

4.9 Overall rating

Luis P
January 27, 2023
Verified Purchase

Unit 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, 2022
Verified Purchase
No 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, 2022
Verified Purchase
Easy 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, 2022
Verified Purchase
Smoke CO alarm replace

These all arrived in a timely manner and worked perfectly when we installed by ourselves.

Sterling C
September 22, 2022
Verified Purchase
Peaceful 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, 2022
Verified Purchase
smoke/carbon monoxide alarm with battery backup- SC9120B

Very good so far right out of the box

michael t
September 7, 2022
Verified Purchase
smoke alarm/carbon monoxide dector

Very happy with first alert products for the past seven yrs.

James P
August 26, 2022
Verified Purchase

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, 2022
Verified Purchase
mfg 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, 2022
Verified Purchase
Replacement Smoke /CO-2 Detectors

Terrific product. Very effective to assure your safety.

Richard D
July 15, 2022
Verified Purchase
Fast & easy order

We were very pleased with the ease of ordering & the fast shipping. 😊

Robin G
June 22, 2022
Verified Purchase

have used tis brand for many years and will continue, very reliable .

Sandra D
May 18, 2022
Verified Purchase
Smoke Alarm

Received quickly. Easy to install. Works well

Robert D
May 6, 2022
Verified Purchase
Smoke alarms

Replaced the old ones

glenns k
April 26, 2022
Verified Purchase

very happy with product,fast delivery, simple change out

Elizabeth R
April 19, 2022
Verified Purchase
Great experience

Got what I needed quickly and easily.

Arminda P
April 13, 2022
Verified Purchase
Smoke and MO ALARM

Dependable, efficient, replaceable battery.

James O
February 28, 2022
Verified Purchase
Repeat Customer

Great prices, Name Brand, excellent packaging. Fast shipping.

Wayne G
February 14, 2022
Verified Purchase
First Alert Hardwired Combination Smoke/Carbon Monoxide Alarm with Battery Backup - SC9120B

Install instructions are good. One unit had missing battery.

Jeeva V
February 11, 2022
Verified Purchase
First 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.

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