What type of sensor does this alarm have?

This alarm is equipped with an advanced electrochemical carbon monoxide sensor.

What type of power source does this alarm use?

This alarm is powered by two AA batteries.

How loud is the alarm?

The alarm emits an 85 decibel siren when carbon monoxide is detected.

Does this alarm have an end of life signal?

Yes, this alarm is equipped with an end of life signal chirp, so you know when it s time to replace the unit.

Does this alarm come with a warranty?

Yes, this alarm comes with a 5 year limited warranty.

First Alert CO400FF Battery Powered Carbon Monoxide Alarm Review

9.1

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Verdict overview

Easy installation 9.4

lasts a long time 8.6

worth the money 9.1

Precision 9.3

Simple to use 9.1

clearly written 9.4

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Pros

Reliable battery operation during power outages.
Easy installation and testing process.
Loud alarm ensures timely alerts.

Cons

Might need wall mounting.

Tech specs

color	White
pattern	Detector
batteries included	Yes
warranty description	5 Year Limited Warranty
description pile	9V battery
alarm	Audible
customer reviews	4.7 4.7 out of 5 stars 19,319 ratings 4.7 out of 5 stars
battery cell type	Alkaline
product dimensions	1D x 5W x 3H
batteries	2 AA batteries required. included
item weight	7.2 ounces
voltage	120 Volts
certification	UL2034
item package quantity	1
size	Pack of 1
material	Multi
power source	Battery Powered
style	Battery Powered
sensor type	Electrochemical
batteries required	Yes

Product Overview

I recently had the chance to try out the FIRST ALERT CO400FF Battery Powered Carbon Monoxide Alarm and was very pleased with the performance. This alarm is designed to detect carbon monoxide levels in your home and alert you of any dangerous levels. The design of this alarm is simple yet effective, making it easy to use and install.

The FIRST ALERT CO400FF Battery Powered Carbon Monoxide Alarm is powered by two AA batteries, which are included with purchase. This eliminates the need for hard wiring, making it a great choice for renters as well as homeowners. Additionally, the alarm has an advanced electrochemical sensor that accurately detects carbon monoxide levels no matter where it s placed in the room. The loud 85 decibel alarm will sound when CO levels reach dangerous levels, giving you plenty of time to get out of the house and call emergency services if necessary.

The FIRST ALERT CO400FF is also equipped with an end of life signal chirp that lets you know when it s time to replace the unit for safety purposes. Plus, all FIRST ALERT CO alarms are rigorously tested to meet UL standards so you can rest assured that this product is reliable and safe for your family.

When it comes to installation, I found the process to be extremely straightforward and simple. All you have to do is mount the alarm on the wall or ceiling using provided screws or adhesive strips and then connect the two AA batteries included in order to power it up. With this easy setup, I had my alarm up and running within minutes!

Overall, I am very impressed with how well this alarm works and how easy it was to install. It s a great option for anyone looking for an affordable yet reliable way of detecting carbon monoxide levels in their home. For added peace of mind, I would highly recommend placing one on each level of your home as well as in each bedroom so that everyone can be safe from potential danger caused by carbon monoxide poisoning.

Where to buy:

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Frequently asked questions

What type of sensor does this alarm have?
This alarm is equipped with an advanced electrochemical carbon monoxide sensor.
What type of power source does this alarm use?
This alarm is powered by two AA batteries.
How loud is the alarm?
The alarm emits an 85 decibel siren when carbon monoxide is detected.
Does this alarm have an end of life signal?
Yes, this alarm is equipped with an end of life signal chirp, so you know when it s time to replace the unit.
Does this alarm come with a warranty?
Yes, this alarm comes with a 5 year limited warranty.

The secret behind our reviews

By Best Choice team

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