The First Alert® SMCO210 Sealed 10-Year-Battery Combo Smoke and CO Alarm with Slim Profile Design uses our Precision Detection advanced sensing technology to meet the latest industry standards. This 2-in-1 alarm provides convenient protection against both fire and carbon monoxide (CO). The slim-profile combination alarm is half the depth of a standard alarm. It is sleek and compact to help the detector blend seamlessly with most home décor. And the 10-year lithium battery means no battery replacements for a decade – the end-of-life warning lets you know when it is time to replace the alarm. No more low-battery chirps and multiple battery replacements!
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Combines smoke and carbon monoxide detection for reliable, all-in-one safety in your home
Built-in lithium battery lasts a decade, eliminating replacements and low battery chirps
Advanced sensing reduces false alarms and quickly detects fast-burning synthetic materials
Compact and sleek, this alarm is half the depth of standard models for a less obtrusive look
Audible alert at 85 dB from 10 ft ensures you hear warnings promptly
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