Electrochemical sensor technology detects CO gas
Easy installation,
no wiring needed: operates on a 10-year lithium battery, so it never needs replacing, plus detects during power failure
Conveniently designed & portable: simple to install on a wall of your home or place on a tabletop
85-decibel alarm alerts to carbon monoxide
3 LEDs indicate: green = normal operation, red = carbon monoxide presence, & amber = replace the detector