Carbon Monoxide Alarm, Plug In
The First Alert CO400 Carbon Monoxide Alarm utilizes an electrochemical carbon monoxide sensor that lasts for up to five years to detect carbon monoxide. The plug-in carbon monoxide detector requires minimal installation; all it requires is a standard electrical outlet. In the event of a power outage, battery backup powers the CO detector so it can continue monitoring your home for dangerous levels of carbon monoxide. A low-battery light and chirp will alert you when the carbon monoxide detector has reached the end of its life and is time to replace it with a new detector. Once the First Alert CO605 Carbon Monoxide Alarm with battery backup has been installed, remember to test your plug-in CO detector, with the easy access test button, regularly and change the batteries at least twice a year.