[Accurate] The carbon monoxide detectors use an advanced electrochemical sensors and precise software controls, which can instantly and accurately detect CO, giving you the earliest possible warning of CO threat.
[7-year 24/7 protection with replaceable battery] This CO detector powered by 2 replaceable 1.5 V AA batteries and a 7-year sensor life which provides 24/7 protection even during power outages.
[Humanized Design] If the carbon monoxide alarm come into the status of CO alarm warning, the alarm will start in a lower alarm volume (85dB). It will avoid people to be scared suddenly by a loudness alarm sound.
