First Alert 1039727 Alarm, Numeric Display, 85 dB, Alarm: Audible, Electrochemical Sensor

First Alert Alarm, Digital Display, 85 dB, Alarm: Audible, Electrochemical ✓ Warranty Covers 3 Years of Use ✓ Valet Mode Disables Alarm Temporarily ► Activate Your Security System

Be alerted to dangerous carbon monoxide leaks with the first alert CO410 battery-operated carbon monoxide alarm with backlit computerized display. This carbon monoxide detector uses an electrochemical carbon monoxide sensor. An easy-to-read backlit digital display allows a time-saving view of current and peak CO levels. This unit is powered by two replaceable AA batteries, offering peace of mind even during power outages.