NIFFPD Carbon Monoxide Detector, Carbon Monoxide Alarm for House and Bedroom Battery Powered

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 This CO detector powered by 3 replaceable 1.5 V AA batteries and a 7-year sensor life which provides protection even during power outages. 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. Whole home family protection - place 1 carbon monoxide detector on each level of your home & in your bedroom to protect from poisonous gases