First Alert Plug-In Carbon Monoxide Alarm With Battery Backup
$27.44
At Wal-Mart.com USA, LLC on 11-24-2008.
The First Alert plug-in carbon monoxide alarm with battery backup provides continuous protection, even during power outages. A single test and silence button tests if the unit is functioning, and silences unwanted alarms. The loud 85dB alarm sounds when carbon monoxide reaches dangerous levels and the model has a permanent sensor that never needs replacement.
