first alert 1039727 alarm, digital display, 85 db, alarm: audible, electrochemical sensor

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

• EZ view backlit digital display allows easy viewing of danger levels, current and peak CO levels in your home
• EZ access battery door, front-open compartment allows easy battery change without dismounting alarm
• Mute button silences unnecessary alarms, it also tests alarm functions with same button
• Low battery signal mute, quiets low battery signal for up to 8 hrs
• Electrochemical sensor, most accurate technology available for detecting carbon monoxide compared to other common sensing technologies
• End of life timer, alarm chirps when it is time to replace it
• 7 years limited warranty, carbon monoxide alarms should be replaced every 5 years for maximum protection
• Emits T3 pattern