Electrochemical sensor technology detects CO gas
Easy installation, no wiring needed, detects during a power failure by operating on 2-AA batteries (included); Install on a wall of your home or place on a tabletop
Green LED indicates power to the carbon monoxide detector, while an 85-decibel alarm & a red LED indicates the presence of carbon monoxide
Event Memory records the last time carbon monoxide was detected or when the unit was last tested