Amazon has the First Alert CO400 Battery Powered Carbon Monoxide Alarm $12.29 + Free shipping w/Prime
- Battery-operated carbon monoxide alarm
- Uses electrochemical carbon monoxide sensor--the most accurate technology available
- Simple to use silence/test button, low battery warning, end-of-life timer
- 9V battery included
- 5-year limited warranty, carbon monoxide alarms should be replaced every 5 years for maximum protection
- Battery-operated carbon monoxide alarm
- Uses electrochemical carbon monoxide sensor--the most accurate technology available
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