120 volt - AC - Plug-In - Digital Display | Kidde Nighthawk Carbon Monoxide Alarm / Detector with Battery Backup (9V Battery Included)
- Digital display shows level of carbon monoxide the unit is sensing (updates reading every 15 seconds)
- Peak level button displays the peak CO level recorded by the alarm since it was last reset or unplugged
- 9-volt battery backup provides continuous protection even during power outages
- Tamper-resist feature goes into constant alarm mode if unit has been unplugged or has come loose from the outlet
- 7-year end-of-life warning alerts user to replace CO alarm (40 percent longer than other CO alarms)
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