The First Alert CO400 Carbon Monoxide Alarm utilizes an electrochemical carbon monoxide sensor to monitor your space for a carbon monoxide threat. The battery-powered design doesn't require an electrician; simply insert the included 9-volt battery, and the carbon monoxide detector is ready to go. The advanced electrochemical CO sensor detects carbon monoxide leaks from multiple sources, such as faulty fuel-burning appliances, blocked chimneys, and generators running inside or too close to homes. Because CO evenly distributes itself, it's important to have a CO detector on every level and in every bedroom of your home.

• Keep your family safe with this easy to use, battery operated carbon monoxide alarm; battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
• Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room
• When CO levels become elevated A loud 85-decibel alarm sounds
• To ensure complete protection make sure to place one on each level of your home and in each bedroom
• 5-year limited warranty; equipped with end-of-life signal chirp, so you know when it’s time to replace the unit for safety
• Designed to be simple to use, the CO detector has just one button that silences or tests the unit, as well as an end-of-life timer that lets you know when it's time to replace the device
• All First Alert CO alarms are rigorously tested to meet UL standards

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Shipping Note: Shipping to Alaska, Hawaii, PO Boxes, and APO addresses is not available for this item

Warranty: 5 Year Manufacturer Warranty