Kidde Plug-In/Battery Operated Carbon Monoxide Detector $12 at Walmart $12 $25 Walmart has the Kidde 900-0263 AC-Plug-In with Battery Backup Carbon Monoxide Detector for $12 with free shipping with Walmart+ (30-day trial) or on $35+. Uses 2 AA batteries for battery backup (included). $12 retail: $25 Posted by Faraday11/07/2025 at 06:10 PM PT
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