FIRST ALERT 1039741 Carbon Monoxide Alarm, 85 dB, Alarm: Audible, Electrochemical Sensor [SKU: ORG7016686]

CO detector alerts you to carbon monoxide, Electrochemical CO sensor is most accurate technology available, Battery-operated design works almost anywhere, Loud 85 dB alarm sounds when CO levels are elevated, Single test/silence button for simple operation, When carbon monoxide levels rise, the carbon monoxide detector sounds an 85 dB siren that is designed to wake even the soundest of sleepers, A low-battery light and alarm alert you when battery power is running low, and an end-of-life timer lets you know when the device should be replaced, Each CO detector lasts approximately 5 years. [QTY/UOM: 2 / 1PK]