The first ALERT® CO605 carbon monoxide plug in alarm with battery backup features an electrochemical CO sensor to alert you to carbon monoxide. This carbon monoxide detector plugs into any standard electrical socket to monitor CO levels in your home. The simple, user-friendly design features battery backup to allow for continuous monitoring, even in the event of a power outage.

FIRST ALERT Carbon Monoxide Alarm, Carbon Monoxide Detection Method, 120 VAC, Audible, Visual Alarm, LED Light Visual Indicator, 85 dB Sound Level, Electrochemical CO Sensor, 0.09 A, 60 Hz, Plug-In Connection, 40 to 100 deg F, 3.4 in Width, 1.38 in Height, 5 in Depth

• Dual power provides continuous monitoring - 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
• End of life warning - 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 CO detector
• Simple and easy-to-use - 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