Customer Reviews For The USI Digital Display Plug-In 2-in-1 CO and Natural Gas Smart Alarm

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28 Reviews

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28 customers recommend this product

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Timothy U

March 10, 2023

Verified Purchase

Dual gas alarm

As advertised. Arrived quickly. Hopefully it works if there is ever co2 or natural gas in house

Kathy S

October 24, 2022

Verified Purchase

So far it works well!! No problems at all!!

Barry S

July 16, 2022

Verified Purchase

CO and Natural Gas Detector

Items performed as advertised

Derek N

February 14, 2022

Verified Purchase

Great peace of mind

Installed near our living room where the gas fireplace is. You just never know when things could happen, it's good to know that this unit is there to alert us.

Elizabeth B

December 29, 2021

Verified Purchase

Simplicity is the word!

It couldn't be easier to be protected from the deadly airborne killers, carbon monoxide and natural gas. Simply plug it into a wall socket, set an expiration date on your iPhone and your good to go. Just forget about it!

Ronald G

November 21, 2021

Verified Purchase

Great Product

I find the product to be exactly what i needed in the house. I have a generator & this product fits perfectly. Fast delivery & easy to install. Certainly creates peace of mind in the entire house, knowing it is working to keep the family saye. Thank You.

William B

November 19, 2021

Verified Purchase

Universal Security Instruments Plug-In 2-in-1 Carbon Monoxide and Natural Gas Smart Alarm

It is hard to test a Carbon Monoxide and Natural Gas monitor, but the Unit quality appears to be high and the packaging was very minimal.

Ronald G

November 4, 2021

Verified Purchase

Great Product

Received the product quickly. Very easy to install & provides the security I need within the house. Really like the 2 in 1 feature with the battery backup, adds the safety & peace of mind for the family. Thanks.

Jennifer W

October 18, 2021

Verified Purchase

CO and CH4

Hasn't been needed yet but install went well.

Raghava C

October 11, 2021

Verified Purchase

Nice product

It was easy to set up and it is working fine.

Bill M

October 8, 2021

Verified Purchase

owner

I have used these for years, and replaced existing units that expired.Plus the multi detection feature is additional protection

Evanthia C

September 8, 2021

Verified Purchase

great product

works as indicated and very easy to use and understand.

Steven Roberts

May 10, 2020

Verified Purchase

Nice unit

Item was well packed and seems good quality.

David Marco

May 6, 2020

Verified Purchase

Product worked well...delivery was quick, installation went well. Easy online ordering.

Deborah Laurain

February 6, 2020

Verified Purchase

Carbon monoxide alarm

This product is excellent. I have had this in my home for many years and I trust it will keep my family safe. I like that it detects 2 dangerous factors gas and carbon monoxide!

David Langston

January 16, 2020

Verified Purchase

Works well as per documentation, no false alarms

It works correctly. There have been no false alarms, but apparently I have no CO or CH4 in my furnace/laundry room either, so I can't evaluate those functions. Tested the alarm test at a peak level of 116 dBA with a sound meter. That should wake me up if it ever really alarms.

Robert Gilliam

November 28, 2019

Verified Purchase

Easy Installation

Since most outlets are 2 or less from the floor, I installed a duplex outlet about 12 above a light switch on the wall. Easy using an old work junction box. This solved the correct height debate by placing it halfway up the wall. Plugged in the detector and Voila!

Ronald Carver

September 17, 2019

Verified Purchase

CO and Nat Gas Wall Device

Excellent product at a great price.

Jeffrey Muehring

April 10, 2019

Verified Purchase

For the price, It's better than any detector sold in a retail store.

Thomas Petray

September 8, 2018

Verified Purchase

Carbon Monoxide/Natural Gas Alarm Working well

Kept getting some various alarm sounds and different numeral codes, but it stopped after the third reset and appears to be working quite well now.

WHAT LEVELS (PPM) OF CARBON MONOXIDE CAUSE AN ALARM?

Carbon monoxide alarms are designed to alarm before the average healthy adult feels symptoms. Since you cannot see or smell CO, never assume it's not present. Underwriters Laboratories Inc. Standard UL2034 requires residential CO alarms to sound when exposure times and exposure levels of CO in the chart below. CO alarm levels are measured in parts per million (ppm) of CO over time (in minutes). The UL2034 Required Alarm Points are:

If the Alarm is exposed to 400 ppm of CO, it must alarm between 4 and 15 minutes.
If the Alarm is exposed to 150 ppm of CO, it must alarm between 10 and 50 minutes.
If the Alarm is exposed to 70 ppm of CO, it must alarm between 60 and 240 minutes.

WHERE DO NATURAL GAS LEAKS HAPPEN?

Having a home natural gas detector or alarm is crucial to ensure your safety, as leaks can originate from various parts of your plumbing. Interior gas lines, which transport gas throughout your house to appliances, can develop leaks due to corrosion, improper installation, or wear and tear. The appliances themselves, like furnaces, water heaters, and ovens, can also be culprits, leaking from faulty valves, hoses, or connections, especially if not maintained properly or if the appliances are old. Even underground pipes bringing gas to your house from the main line can leak due to accidental digging or events like earthquakes.

HOW OFTEN SHOULD I REPLACE MY HOME NATURAL GAS DETECTOR?

To ensure your home natural gas detector keeps you safe, replace it every seven years, even if there are no warning signs. Check the expiration date on the detector itself, but plan for replacement every seven years regardless. A natural gas detector will beep frequently (every 30 seconds to a minute) or display an "EOL" (End-of-Life) alert when nearing the end of its lifespan, but don't wait for these warnings before replacing.

WHY ARE MY NATURAL GAS DETECTORS BEEPING?

A beeping natural gas alarm can indicate either a dangerous gas leak or a less serious issue. Evacuate your home immediately and call 911 from outside if the beeping is continuous, as this signifies a potential leak. However, a natural gas leak detector alarm may use short, regular beeps (every minute or so) to signal low battery or the end of the detector's life.

IS CARBON MONOXIDE HEAVIER THAN AIR?

Carbon monoxide is not heavier than air. A carbon monoxide alarm should be installed in a location where the alarm will stay clean, and out of the way of children or pets. Refer to the user's manual for specific installation requirements.

WHERE SHOULD I INSTALL MY CARBON MONOXIDE ALARMS?

It is very important to install a carbon monoxide alarm outside each separate sleeping area, and for maximum protection, install one in every bedroom. Many states now require installation of a carbon monoxide alarm inside each bedroom. For added protection, placement of an additional carbon monoxide alarm at least 15-20 feet away from the furnace or fuel burning heat sources is recommended. Install carbon monoxide alarms a minimum of 10 feet from sources of humidity like bathrooms and showers. In multiple-story dwellings, install one carbon monoxide alarm on every level. If you have a basement, install a carbon monoxide alarm at the top of the basement stairs, and in each separate sleeping area.

WHAT AREAS SHOULD I AVOID INSTALLATION OF A CARBON MONOXIDE ALARM?

Do not install carbon monoxide alarms in garages, kitchens, furnace rooms, or in any extremely dusty, dirty, humid, or greasy areas. Do not install alarms in direct sunlight, or areas subjected to temperature extremes. These areas include unconditioned crawl spaces, unfinished attics, un-insulated or poorly insulated ceilings, and porches. Carbon monoxide alarms should not be installed in outlets covered by curtains, heavy furniture or other obstructions. Do not install in turbulent air-near ceiling fans, heat vents, air conditioners, fresh air returns, or open windows. Blowing air may prevent carbon monoxide from reaching the CO sensors.

WHY DO I NEED A NATURAL GAS DETECTOR?

When natural gas leaks into a confined space, it can build up to an explosive concentration. If there's an ignition source like a spark from an appliance or a lit cigarette, an explosion can occur.

The Universal Security Instruments Electric MCND401 Plug-In Carbon Monoxide and Natural Gas Smart Alarm provides dual protection against two deadly threats: carbon monoxide and natural gas. This innovative 2-in-1 device simplifies installation while safeguarding your home and family. The compact plug-in design conveniently fits into any standard outlet, requiring no professional installation. This makes the alarm ideal for homes, apartments, or mobile homes.

Digital Display: This alarm features a digital display that shows real-time carbon monoxide (CO) levels in parts per million (PPM). This allows you to monitor CO concentration and take immediate action if levels exceed safety thresholds.

Microprocessor Intelligence: The 2-in-1 alarm utilizes microprocessor software to analyze readings and minimize false alarms. This ensures reliable detection while reducing unnecessary disruptions.

Peak CO Level Memory: This detector can record peak CO levels, aiding in identifying potential CO sources or trends.

Natural Gas Detection: The unit can detect the presence of natural gas, providing early warning of potential hazards.

Visual Gas Indicator: The alarm's display will indicate "GAS" when a natural gas leak is detected.

End-of-Service Life Warning: This 2-in-1 carbon monoxide and natural gas detector provides an alert when it reaches the end of its lifespan (approximately 7 years from activation). A 9-volt alkaline battery (included) continues protection in the event of a power outage.

This USI Carbon Monoxide and Natural Gas Detector is ETL Listed to UL Standard 2034 & UL1484, California State Fire Marshal approved and Federal Housing Authority (FHA) approved to exceed industry standards. For maximum protection, install an alarm inside every bedroom, outside every sleeping area and on all levels of the dwelling. The Universal Security Instruments Electric MCND401 Plug-In Carbon Monoxide and Natural Gas Smart Alarm comes with a 5 year limited warranty.

Recommended replacement for the following obsolete models:
- CD-9690