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The First Alert CO605 Carbon Monoxide Plug-In Alarm features an electrochemical CO sensor to alert you to dangerous carbon monoxide. This personal carbon monoxide detector plugs into any standard electrical socket to monitor CO levels in your home, office, or other space. The simple, user-friendly design features battery backup to allow for continuous monitoring, even in the event of a power outage.
Dual Power Provides Continuous Monitoring
The carbon monoxide detector can be placed almost anywhere; all it requires is a standard electrical outlet. In the event of a power failure, backup batteries power the CO detector so it can continue monitoring your space for dangerous levels of carbon monoxide.
Electrochemical CO Sensor
The First Alert Carbon Monoxide Plug-In Alarm uses an electrochemical sensor to alert you to elevated carbon monoxide levels. Designed to alert the soundest of sleepers, a loud 85-decibel alarm warns you when carbon monoxide is detected.
Simple and Easy to Use
The carbon monoxide monitor is easy to set up: simply plug it into a standard electrical outlet to monitor your space for carbon monoxide. There are no complicated displays or settings to navigate; a single button silences the alarm and tests the CO detector.
Where To Place Carbon Monoxide Alarms: One on every level of the home and one in each sleeping area.
First Alert Carbon Monoxide Alarm CO605
Average Rating Based on 131 reviews: (4.9)
Peace of mind. - 02/08/2019
Reviewer: Richard Trent
It is great to know if power fails we remain protected from carbon dioxide.
Reviewer: Elder Ron Matkin
Reviewer: Kathleen Olson
Always first class service
Carbon Monoxide w/Battery Backup - 03/19/2018
Reviewer: Margaret M Wytrwal
Exactly what I had hoped for. Great pricing and quick delivery
Reviewer: Kathleen Olson
They're very handy in the real estate field, when we've an inspection we can quickly install the Plug-in.
Pleasantly pleased. - 01/30/2018
Reviewer: PAMELA CITRIN
We were surprised how small the alarm was and that the back up battery that was included in the packaging.
Home safety - 09/05/2017
Reviewer: Saverio Noto
Very safe with my new carbon monoxide alarm. Thank you
Easy to use - 05/01/2016
Reviewer: Jay Williams
Easy to use
It came fast & works - 12/13/2015
Reviewer: James Yannes
Received the item in good time.
No Mono Here. - 07/04/2015
Reviewer: John Kalabokes
This is the 2nd set of 2 Carbon Monoxide Alarms I have purchased from First Alert and I expect this pair to be just as reliable as the previous set. I had the previous set for 10 years so I thought it was time to replace them with newer technology. The neat thing about this pair is the ease of installation. you just plug them in and you're done. be sure to test the units once a month to be sure they are working. there's no other way to tell unless you actually have a carbon monoxide leak and thank God they're working.
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