Hardwired Carbon Monoxide Alarm with Battery Back-up

This First Alert Hardwired carbon monoxide alarm with battery back-up meets codes where CO alarms are required for new construction. This carbon monoxide alarm detects dangerous CO gas and allows you peace of mind with its battery backup.

Hardwired Carbon Monoxide Alarm with Battery Back-up Features:

● Quick plug-in power connector.
● 120-volt AC inter-connectable.
● Microprocessor controlled for fewer nuisance alarms.
● Single test/silence button.
● Battery drawer lock.
● Mounting bracket lock for tamper resistance.
● Low battery warning "chirp".
● Missing battery tab.
● Swing open battery drawer.

average customer rating based on 19 reviews

- 06/14/2013
Reviewer: Melvin Belafsky
Easy to order. Received several updates from delivery service. Received item in good order. Replaced old unit in a matter of seconds. Everything in fine working order

simple CO - 03/04/2013
Reviewer: MARK HARTMAN
this is a reasonably priced ac/battery carbon monoxide alarm

- 01/04/2013
Reviewer: Hilda  Andengaard
I bought this to replace the one that I had been using for eight years. It is the same model and was the easiest way to replace the broken one.

- 11/05/2012
Reviewer: Eric Blaeser
Did not work dead on arrival. Purchased competitive product locally and worked fine. Very disappointed.

eAccess Response:
Dear Customer - We are very sorry to hear of the issue you had with this alarm. We are happy to replace this for you. Please advise us if you would like us to process an RMA for this item. -Thank you

Great product - 11/04/2012
Reviewer: Thomas Giangrande
Great alarm at a good price. Easy online ordering.

Excellent product - 06/07/2012
Reviewer: Thomas Wessel
Easy installation and flawless function.

FAS-51886 - 05/11/2012
Reviewer: Tom Tinker
Got here just in time. Awesome!!

- 02/10/2012
Reviewer: Tom Tinker
I kept looking for FedEx to deliver the Co alarm, but it came in the USPS.

Good product, easy switch-out/install - 02/02/2012
Reviewer: Julie Boswell
Product was very easy to install very easy to switch out previous Hardwired CO Alarm wiring and install new product. Nice to have a CO Alarm that uses regular battery for back-up instead of special product battery.

CO5120BN - 12/26/2011
Reviewer: Thomas Zmyslinski
Easy to install.

• First Alert CO5120BN Carbon Monoxide Alarm Manual