Customer Reviews For The First Alert Battery Operated Carbon Monoxide Alarm with Digital Display - CO410

Overall Rating

62 Reviews
62 customers recommend this product
August 18, 2022
Verified Purchase
product description accurate

read the directions, ran a test, and found the alarm was an easy install

David S
May 19, 2021
Verified Purchase
Nice features and easy to install

We needed a battery operated unit and wanted one with a LCD display. This unit is nice as it shows current battery level and if you want to see peak the display is easy to read. Great value and well built

David S
May 19, 2021
Verified Purchase
Nice features and easy to install

We needed a battery operated unit and wanted one with a LCD display. This unit is nice as it shows current battery level and if you want to see peak the diapay

Joe B
March 22, 2021
Verified Purchase
Excellent Service

The CO detectors arrived very promptly and in good condition. The First Alert Store is a much easier source of CO and smoke detectors than I was able to locate on-line.

Rebecca Clark
March 12, 2021
Verified Purchase
Carbon Monoxide Alarm

Our old alarm had reached its expiration. We ordered a new alarm at the First Alert online store. We received the replacement alarm in a few days, and installed it with no problems what so ever. Like the backlit battery life display.

LeRoy Frahm
February 9, 2021
Verified Purchase
Love this Unit

The display is great and I think the AA batteries fit more secure than a 9 volt model. This is my third one I purchased!

LeRoy Frahm
December 24, 2020
Verified Purchase
Really great product

Really great product at a great price!

LeRoy Frahm
November 17, 2020
Verified Purchase
Great product

Love the display to show battery level, Co level - current and peak. Removes all guess work. Battery compartment has easy access in the front. I like this model over my other First Alert unit models.

Bill Keaton
October 19, 2020
Verified Purchase

It wasMy local hardware store did not carry it that is why I ordered online. It replaced my old one and I amhappy it mounted with the same screws on the same centers as the old one.

ilona Leki
October 5, 2020
Verified Purchase
happy to have it

Customer service was efficient and helpful. The alarm was delivered VERY fast and works perfectly. I've dealt with you guys before and this experience was the same--excellent!

John Collins
September 17, 2020
Verified Purchase

Consumer Reports rates this CO alarm as the best stand alone battery operated one. Yes, there are more highly rated CO alarms, but they must be connected to a house electrical circuit. Also, it is less expensive than many of the others. Since the experts recommend that each bedroom and hallway have a CO alarm, most homes need at least 4 or more of these. So the savings on this alarm are actually increased by at lest 4 fold.

William Cody
August 31, 2020
Verified Purchase
Simple install !

Simple to put up. Diections essy to follow. Like AA battery rather than nine volt

Steven Feldman
June 6, 2020
Verified Purchase
Better CO detector

I bought this to replace an older First Alert CO detector that had reached end of life. It fit on the same mounting screws as the old one and the LED screen is a nice upgrade. It lets you know when the battery is low before it starts chirping at 1am.

David Kay
June 1, 2020
Verified Purchase
Excellent Replacement for CO400

This was a perfect replacement for a CO400 that reached its end of life. The mounting holes lined up perfectly, and the unit was easy to start and test. I like the display.

Lawrence Budnick Jr
May 7, 2020
Verified Purchase
L. J. Budnick, Jr

Worked right out of the box. It even came with batteries. Great!

Chris S.
April 27, 2020
Verified Purchase
Works & Looks good

The detector was shipped on time and it worked great out of the box. I like the fact that it uses less expensive AA batteries which can be easily accessed and replaced in front of the unit. I hope it lasts me as long as the older model I replaced.

April 3, 2020
Verified Purchase

Appears to be working as advertised.

Brian Murphy
March 24, 2020
Verified Purchase
Long lasting.

Purchased 4 of these with mfgr date in early 2011. Installed upon receipt. First of them just gave End Of Life signal, almost exactly 9 years later. No problem with any of them over that time. Easy to use and install, that's why I'm replacing old ones with the same thing.

December 31, 2019
Verified Purchase


Ted Lemanowicz
December 16, 2019
Verified Purchase
new alarm

This my 3 rd purchase and very happy the alarm has never gone off!!!

How often do you need to change the batteries?
Actual battery service life depends on the particular design of your smoke or carbon monoxide alarm and the environment in which it is installed. All kinds of alarm batteries specified in the user's manual are acceptable replacement batteries. Regardless of the manufacturer's suggested battery life, you MUST replace the batteries immediately once the unit starts "chirping" (the "low battery warning"). It is recommended that you change the batteries in your alarms when you change your clocks for daylight saving time. Also consider replacing your current alarms with 10-Year Life Alarms that never require a costly battery replacement for the ten year life of the alarm. This 10-Year series is available in smoke, carbon monoxide and combination alarms.

How do I get my carbon monoxide alarm to stop chirping?
If your carbon monoxide alarm keeps chirping, the battery may be low or weak. On First Alert carbon monoxide detectors, check to see if the battery light is yellow or green. If the alarm is chirping and the light is yellow, it means the battery is low. The way to get a carbon monoxide alarm to stop chirping is to replace the battery.
Where should I install carbon monoxide alarms? What is proper carbon monoxide alarm placement?
It is very important to install carbon monoxide alarms near or in each separate sleeping area. Many states now require that a carbon monoxide alarm is placed in 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. Also, install carbon monoxide alarms at least 10 feet from sources of humidity like bathrooms and showers. In two story houses, install one carbon monoxide alarm on each level of the home. If you have a basement, carbon monoxide alarm placement is recommended at the top of the basement stairs.
Is there anywhere I shouldn't install carbon monoxide alarms?
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 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 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.
How many carbon monoxide alarms should I have in my home?
So how many carbon monoxide alarms should you have in your home? The National Fire Protection Association (NFPA) recommends that you should have a carbon monoxide alarm centrally located outside of each separate sleeping area in the immediate vicinity of the bedroom. For added protection, you should have additional carbon monoxide alarms in each separate bedroom and on every level of your house, including the basement. Some states now require that you have a carbon monoxide alarm in each bedroom of the house. If you install only one carbon monoxide alarm in your home, place it near or in your bedroom.
What is the proper way to do a carbon monoxide alarm test?
The following procedure is the proper way to do a carbon monoxide alarm test - Press and hold the Test Button on the front of the alarm until the alarm sounds. Be sure you hold the button down long enough; it can take up to 20 seconds for the alarm to respond to the test.
Is it a false alarm when my carbon monoxide alarm sounds and there doesn't seem to be a problem?
A carbon monoxide alarm false alarm should not occur if your alarm is in working order. Remember, carbon monoxide is an odorless, colorless gas. If your carbon monoxide alarm went off, it detected potentially harmful amounts of carbon monoxide. After the professionals have evaluated the situation, make sure no one has any symptoms of carbon monoxide poisoning.

Here are a few situations that may cause a carbon monoxide alarm "false alarm:"
  • The carbon monoxide alarm needs to be relocated. Carbon monoxide alarms should be located 15-20 feet away from all fossil fuel burning sources like furnaces and stoves. Alarms should be located 10 feet away from sources of humidity like showers.
  • Fossil fuel burning appliances may not be burning fuel completely. Check pilot lights/flames for blue color. Appearance of yellow or orange flames indicates incomplete combustion-a source of carbon monoxide.
Will carbon monoxide alarms detect explosive gas leaks?
No, a single function carbon monoxide alarm reacts to carbon monoxide only. To detect explosive gas, you need an explosive gas detector. Different kinds of explosive gas can be detected and it is recommended that any home that utilizes natural or propane gas have at least one explosive gas leak detector.
I'm ready to change my alarm battery - what replacement batteries can I use?
Check your User's Manual or the nameplate on the back of the alarm. Different smoke detectors & CO alarms use different kinds of batteries - 9V, AA, AAA - it all depends on the particular model you have. Use quality batteries like lithium batteries - having plenty of power is worth any extra cost. Never use rechargeable batteries because they may not always provide a consistent charge.

Battery Operated Carbon Monoxide Alarm with Backlit Digital Display

Be alerted to dangerous carbon monoxide leaks with the First Alert CO410 Battery-Operated Carbon Monoxide Alarm with Backlit Digital Display. This carbon monoxide detector uses an electrochemical carbon monoxide sensor. An easy-to-read backlit digital display allows a quick view of current and peak CO levels. This unit is powered by two replaceable AA batteries, offering peace of mind even during power outages.

Advanced Electrochemical CO Sensor

The First Alert CO410 Battery-Operated Carbon Monoxide Alarm uses an advanced electrochemical CO sensor to detect elevated carbon monoxide levels. When CO is detected, the carbon monoxide detector sounds an alarm to warn you of the threat. Carbon monoxide can't be seen, smelled, or tasted in the air, and it is the leading cause of accidental poisoning deaths in America. Placing carbon monoxide detectors on every floor of the home and in each sleeping room is an important way to protect your family from danger.

Easy-to-Read Digital Display

Thanks to the unit's backlit LED display, it's easy to see the current CO concentrations in parts per million, as well as recent peak levels, and the threshold for dangerous levels. The easy-to-read display illuminates when a button is pressed or an alarm is triggered. A remote control can be used to quiet unwanted alarms (remote control sold separately).

Comprehensive Warning Features

When carbon monoxide levels rise, the carbon monoxide detector sounds an 85-decibel siren that is designed to wake even the soundest of sleepers. A low-battery alarm alerts you when battery power is running low, and an end-of-life timer lets you know when the device should be replaced. A low battery signal mute quiets the low battery signal for up to eight hours. Each CO detector lasts approximately five years.

Simple and Easy to Use

The First Alert CO410 Carbon Monoxide Alarm is easy to set up. Simply insert the two included AA batteries, and the CO detector will start to monitor your space for carbon monoxide. An EZ access battery door allows you to quickly install or remove batteries without having to dismount the alarm. A single button silences the alarm and tests the CO detector.

First Alert Carbon Monoxide Alarm CO410

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