First Alert CO400 Battery-Operated Carbon Monoxide Alarm, 2-Pack
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- 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
- A loud 85-decibel alarm sounds when CO levels reach dangerous levels
- 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
- All First Alert CO alarms are rigorously tested to meet UL standards