First Alert Carbon Monoxide Detector Alarm|No Outlet Required with Digital Display and Peak Memory, Battery Operated, CO410 , White

Keep your family safe with this easy to use digital display, 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; Peak Level feature displays the highest concentration of carbon monoxide measured
A loud 85 decibel alarm sounds when Carbon Monoxide levels reach dangerous levels
To ensure complete protection make sure to place one on each level of your home and in each bedroom
7 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
First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)

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