Protect your family as they sleep with the always vigilant First Alert CO400 Battery Operated Carbon Monoxide Alarm. 1000 people are poisoned and 250 die every year from CO poisoning, but with this device's electrochemical carbon monoxide sensor your household will always be safe. The First Alert CO400 Battery Powered Carbon Monoxide Alarm features a silence/test button, low battery warning, end-of-life timer, and a powerful 85-decibel siren with mute button. Includes 2 AA batteries and is backed by a 5-year limited warranty. Meets UL standards.
With a complete line of home safety devices, First Alert is America?s most-recognized and most-trusted safety brand. Detectors, fire extinguishers, safety boxes, and other preparedness products give home and business owners alike increased peace of mind. First Alert is actively involved in the communities it protects, too, with longstanding outreach initiatives supporting fire service and other organizations dedicated to fire prevention, carbon monoxide detection, and safety.Shop All First Alert