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Customer Reviews
Smoke Alarm - 4/19/2021
Reviewer: George L
It works.
Universal Security Instruments Ionization 120-Volt AC/DC Wired-In Smoke and Fire Alarm with Battery Backup (USI-1204HA)
Smoke Detector - 4/17/2021
Reviewer: Doug R
We ordered 5 detectors as replacements. They arrived quickly, and we are very happy with them.
Universal Security Instruments Ionization 120-Volt AC/DC Wired-In Smoke and Fire Alarm with Battery Backup (USI-1204HA)
Better protection - 4/16/2021
Reviewer: Melissa S
I needed to replace the cheap smoke detectors in my house and did a lot of research before purchasing these. I'm happy to have the protection of BOTH sensors smoke and fire and the ease and savings of a ten year battery. I've installed three so far and they seem to be in perfect working order!
Universal Security Instruments Sensing Plus Multi Criteria Living Area Smoke & Fire Alarm With 10 Year Tamper Proof Sealed Battery (AMIL3051SC)
Awesome product - 4/12/2021
Reviewer: Brent H
Easy to install overall good product.
Universal Security Instruments Ionization 120-Volt AC/DC Wired-In Smoke and Fire Alarm with Battery Backup (USI-1204HA)
2-in-1 CO and Natural Gas Smart Alarm with Battery Backup - 4/12/2021
Reviewer: Jimmy
I purchased the USI Plug-In, 2-in-1 CO and Natural Gas Smart Alarm with Battery Backup MCN400B for my son's new residence. I have a couple of them in my home. We both have natural gas appliances throughout heating, hot water, etc. and that always means the possibility of carbon monoxide if anything goes wrong. Or the possibility of a natural gas leak. Carbon monoxide CO is an odorless, colorless gas formed by incomplete combustion and displaces oxygen leading to poisoning and death.
But with this Universal Security Instruments CO and Natural Gas Smart Alarm, I know that my family is protected from both of these dangers by this highly reputable and trustworthy company. That's why we have these and other Universal Security Instruments products. This CO and Natural Gas Smart Alarm is indeed an absolutely marvelous safety device and now that my son has his own residence, I want him to be afforded the same protection that the rest of my family has always had. This USI Plug-In, 2-in-1 CO and Natural Gas Smart Alarm with Battery Backup is the very best anywhere.
I think of it like this : have you ever had water leak in your home? Most people have at one time of another. Well, you could just as easily have a natural gas leak or a carbon monoxide leak in your home. At least with a water leak, the worst thing that can happen is your house gets flooded. But with a natural gas leak or a carbon monoxide leak, you might die in your sleep. That's why when my family is sleeping, I want the USI Plug-In, 2-in-1 CO and Natural Gas Smart Alarm with Battery Backup to be watching out for us. While my family sleeps, this alarm is always on guard.
Universal Security Instruments Plug-In 2-in-1 Carbon Monoxide and Natural Gas Smart Alarm with Battery Backup (MCN400B)
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