First alert onelink co511b carbon monoxide detector

Reviews by Topic

Our analysis shows how reviewers feel about different topics. Please note these are not full reviews.

Fire Safety

First Alert OneLink CO511B

So far, so good.

This CO monitor replaced an aging OneLink smoke/CO combo unit. Placed in a hall unwittingly close to a bathroom, the old unit was prone to steam-induced false alarms. Obviously, a CO alarm isn't. Existing smoke detectors in adjoining bedrooms pick up the slack in detection. The new unit connected pr...

First Alert SCO7CN

Best Smoke Detector of 2022 - GearLab

For a top-notch battery-powered smoke detector, check out the First Alert SCO7CN. Our overall favorite model, this alarm is simple to install and emits both a spoken call to evacuate as well as a traditional alarm. It detects both smoke and carbon monoxide and tells you the maximum amount of carbon ...

Smoke Alarm

First Alert OneLink CO511B

Ring 24/7 Customers Beware!

If you use a Ring smoke/CO listener: this unit only has the capability, according to First Alert customer care, to vocally state "carbon monoxide" followed by the corresponding interconnected room location. So, if your smoke detector goes off in the kitchen and your CO unit is in your living room by...

First Alert SCO7CN

Best Smoke Detector of 2022 - GearLab

For a top-notch battery-powered smoke detector, check out the First Alert SCO7CN. Our overall favorite model, this alarm is simple to install and emits both a spoken call to evacuate as well as a traditional alarm. It detects both smoke and carbon monoxide and tells you the maximum amount of carbon ...

Security System

First Alert OneLink CO511B

First Alert SCO7CN

Great product, easy to install and takes 2AA batteries

Pros: Takes 2 AA alkaline batteries (included). Smoke and CO sensing. Mute button. Loud alarm and clear voice notifications (Unless you are on drugs this thing will wake you up). Notifications tell you type and location of the danger. Unit is good for 7 years after the printed date on its back. Unit...

Carbon Monoxide Detector

First Alert OneLink CO511B

Ring 24/7 Customers Beware!

If you use a Ring smoke/CO listener: this unit only has the capability, according to First Alert customer care, to vocally state "carbon monoxide" followed by the corresponding interconnected room location. So, if your smoke detector goes off in the kitchen and your CO unit is in your living room by...

First Alert SCO7CN

Great for RV!

We needed one unit for CO & Fire in our RV and this works perfectly. It is definitely loud and the Campground will know there is a fire in our RV but it should do the job. It has a small profile and takes up very little space. It is programmable for a location (ex: fire in the basement, fire in the ...

Why is my First Alert carbon monoxide detector beeping?

1 Beep Every Minute: Low Battery. It is time to replace the batteries in your carbon monoxide detector. 5 Beeps Every Minute: End of Life. This type of chirp indicates it is time to replace your carbon monoxide alarm.

What do you do if your First Alert carbon monoxide alarm goes off?

This means that carbon monoxide has been detected in the area, you should move to fresh air and call 9-1-1.

How do I know if my First Alert carbon monoxide detector is working?

You can test this CO Alarm by pressing the Test button on the Alarm cover until alarm chirps. The alarm horn will sound: 4 beeps, a pause, then 4 beeps. The alarm sequence should last 5-6 seconds. If the unit does not alarm, make sure it has been activated correctly, and test again.

Why is my carbon monoxide detector beeping and flashing red?

Replace or Check the Battery Usually, the annoying beeping caused by a carbon monoxide detector is to alert you about a malfunctioning battery. If the old battery requires changing or it's slipped out of place, the unit will chirp. Try reinstalling the battery or replacing it, and then reset your device.