Product photoFirst Alert SMCO100 Smoke & Carbon Monoxide Alarm
A combination smoke and carbon-monoxide alarm format that consolidates two common residential detection functions.

A plug-in carbon monoxide alarm format with battery backup for continued local alarming during a power outage.
Shopping links may be affiliate links. If you buy after clicking, we may earn a commission at no additional cost to you.
Supplemental carbon-monoxide detection where a plug-in alarm with battery backup is appropriate for the occupancy and installation location.
Alarm type, listing, placement, quantity, power source and replacement schedule can be code-specific. Confirm current requirements for the building before installation.
Kidde Plug-In Carbon Monoxide Detector with AA Battery Backup is a practical building-owner essential because life-safety problems are the wrong place to discover that basic equipment is missing, expired or unavailable. A plug-in carbon monoxide alarm format with battery backup for continued local alarming during a power outage. In multifamily and rental property, smoke, carbon-monoxide and fire-safety requirements are often controlled by state or local building and fire codes, and the exact device type, placement, power source, interconnection and replacement schedule can vary. Even when this exact model is not mandated, owners benefit from maintaining compliant equipment and replacement stock so failed devices can be addressed quickly. Supplemental carbon-monoxide detection where a plug-in alarm with battery backup is appropriate for the occupancy and installation location. The important limitation is that a retail listing does not establish legal compliance. Alarm type, listing, placement, quantity, power source and replacement schedule can be code-specific. Confirm current requirements for the building before installation. Check the code and inspection requirements that apply to the property, follow the manufacturer’s installation instructions, document replacement dates where useful, and use licensed or qualified professionals whenever the work or local law requires them.
We do not claim independent laboratory testing of every product. Building Owner Tools Catalog selections are based on manufacturer-published specifications, practical fit for common building use cases and category coverage. Always verify current specifications with the manufacturer or retailer.