First Alert Carbon Monoxide Detector brings reliable, round-the-clock protection against this invisible hazard. Equipped with an advanced electrochemical sensor, it accurately senses even low levels of carbon monoxide and immediately sounds an 85 dB alarm when concentrations become unsafe. Fully battery-powered and portable, this detector ensures continuous monitoring—even during power outages—while its clean, low-profile design blends unobtrusively into any room.

Installation is quick and tool-free: simply insert the included 9 V battery, mount the unit using the supplied hardware, and you’re set. A single Test/Silence button lets you verify proper operation and temporarily silence nuisance alerts. With a long-life internal sensor that remains effective for up to five years, this unit delivers dependable performance and peace of mind day after day.

Key Features

• Electrochemical sensor technology for precise CO detection
• Loud 85 dB alarm to alert you when carbon monoxide levels rise
• Battery-powered design works even during power outages
• Single Test/Silence button for easy operation and maintenance
• Long-life internal sensor lasts up to 5 years
• Includes 9 V battery and mounting hardware