Kidde AC Plug-In Carbon Monoxide Detector with Battery Backup, CO Alarm with LED

Electrochemical sensing technology - plug-in carbon monoxide alarm detects invisible carbon monoxide gas
Protects during a power failure: 2-AA batteries (included) provide backup in the event of a power outage
Easy to install & use: AC powered by your standard wall outlet
Place 1 carbon monoxide detector on each level of your home & in each bedroom to help protect from poisonous CO gas
End of life notification warns of replacement need after 10 years
Test & reset button ensures of proper operation
Two LED's: red for alarm mode and green for normal operation
UL Certified, 10-year limited warranty