Protect your loved ones with the First Alert CO400
Carbon Monoxide Alarm, a top-tier battery-operated safety
device designed to ensure peace of mind in your home. This compact
yet powerful alarm is engineered to deliver continuous monitoring
of carbon monoxide (CO) levels, providing uninterrupted safety even
during power failures. Thanks to its advanced electrochemical
sensor technology, the CO400 guarantees accurate detection of
harmful CO gases from any position within a room, making it...
Show more Protect your loved ones with the First Alert CO400 Carbon Monoxide Alarm, a top-tier battery-operated safety device designed to ensure peace of mind in your home. This compact yet powerful alarm is engineered to deliver continuous monitoring of carbon monoxide (CO) levels, providing uninterrupted safety even during power failures. Thanks to its advanced electrochemical sensor technology, the CO400 guarantees accurate detection of harmful CO gases from any position within a room, making it a versatile addition to your household security.
Featuring an attention-grabbing, loud 85-decibel alarm, this unit is built to alert you instantly when CO levels reach dangerous thresholds, ensuring you can take prompt action to protect your family. Installation is quick and hassle-free, requiring no extensive wiring — simply place the alarm on any wall or surface as you see fit. The device comes with a 5-year limited warranty and is equipped with an end-of-life signal chirp, notifying you when it's time to replace it for optimal safety.
As a proud part of First Alert's legacy—marking its reputation as the most trusted brand in home safety since the introduction of the first residential smoke alarm in 1958—the CO400 meets stringent UL standards. Knowing that you’ve invested in an industry-tested product can significantly enhance your sense of security. Whether it's your living room, bedroom, or hallway, placing alarms on each level of your home is essential for complete coverage.
Don't leave safety to chance; arm your household against the silent threat of carbon monoxide with the First Alert CO400. This affordable CO detector is more than just a gadget—it's a vital part of your home safety strategy, ensuring that even when you're asleep, protection remains vigilant.
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