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First Alert Carbon Monoxide Alarm, AA Battery
- One mute button mutes unwanted alarms and tests alarm function
- Front-open compartment allows easy battery change without dismounting alarm
- Accurate electrochemical sensor for detecting carbon monoxide
- Low battery signal mute quiets signal for up to 8 hours
- End of life signal provides audible confirmation alarm needs to be replaced
- 2 AA battery and user manual are included
