Customer Reviews For The USI Plug-In 2-in-1 CO and Natural Gas Smart Alarm with Battery Backup

Works great, easy to install, lasts for years.

I had a Universal Security Carbon Monoxide and Natural Gas Alarm for 7 years when it reached the end of its lifespan. I purchased a new replacement and had difficulty getting it to work properly. I reached out to the customer service department who promptly sent a replacement. The new one works great! The company stands behind their products and treat the customer with respect.

This plug in carbon monoxide, natural gas detector assures me peace of mind.

The product arrived exactly as ordered and on time. It was very easy to plug it in to the wall and testing it was also very easy. It was reasonably priced and adds allot of safety to my home.

I purchased two 2 in 1 Carbon Monoxide and Natural Gas Smart Alarms. One of the CO/Gas detectors became defective after about three weeks, the CO sensor kept going off. There was clearly no CO in the area, and since I had two of the detectors, I swapped locations and the bad sensor still went off. I need a replacement for that one. Otherwise I was happy with the purchase and the ease of install.

Response:

Hello, Nahan. We're sorry to hear this. Please reach out to us here and we'll get this resolved for you.

The dual alarm is the best out there!

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.

Works well and easy to use.

Works as advertised and shipped quickly

Very good

I like that this device detects both CO and natural gas now that our home has changed from oil to gas heat. The back up battery is also a comfort.

I like that this device detects both CO and natural gas now that our home has changed from oil to gas heat. The back up battery is also a comfort.

- Very compact - Easy to order - Easy to install, just plug it in - Great price I have four units in my home and will return to Universal when I need replacements.

Quick and easy safety.

Easy to install--pull the battery tab and plug it in.

A combination safety device which was a cinch to install and test. I simply trust that it does not alarm as it is designed to do. Thank you.

Excellent