First Alert SC5 Battery Smart Smoke & Carbon Monoxide Alarm

Price: $124.99
(as of Oct 18, 2026 16:54:29 UTC – Details)


The fire safety you trust is now connected and compatible. Add smart fire safety alerts to your home with the First Alert SC5 Battery Smart Smoke and Carbon Monoxide (CO) Alarm. This 2-in-1 device elevates your home’s fire and CO safety whether home or away.
Compatible with Google’s Nest Protect Alarm
Sends alerts to your phone if smoke and CO are detected through the First Alert app
Interconnect so when one alarm sounds, all compatible alarms in the home sound
Notifies when the batteries are low, eliminating late night chirps
Voice alerts with Heads-Up warning tells you the type and location of danger in your home
Equipped with Precision Detection Technology to help reduce nuisance alarms and provide an early warning
The date shown on the product is the Manufacture Date, which identifies when the product was produced
Customers report that the smoke and carbon monoxide alarm produces false alarms multiple times and has subpar quality, making it dangerous and not worth the money. The device’s compatibility receives mixed feedback – while it integrates well with Google Home, it doesn’t work with the Nest app. Moreover, connectivity issues are reported, with customers noting it keeps losing Wi-Fi connection. Additionally, customers express disappointment about the lack of features, particularly the absence of a path light feature.