FSMCO600NVCL1 Battery Smart Smoke & Carbon Monoxide Alarm
SKU: FSMCO600NVCL1
Presale available now! Smart Alarm coming May 2025.
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 and replaces 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

Product Overview
Upgrade to Smart Smoke & CO Detection
Seamlessly integrate the SC5 Battery-Operated Smart Smoke and CO alarm into your home’s safety ecosystem if you need to add detection or if it is time to replace. Interconnect when installing so when one alarm sounds, all compatible alarms sound throughout the home to help provide an early warning.
Get Smart Safety Features
This smart 2-in-1 battery-operated alarm offers advanced features and the latest smoke alarm technology. The alarm will sound voice alerts with Heads-Up warning in the event of a fire or CO emergency. Alerts will tell you the type and location of danger in the home to help you escape. The alarm will also send mobile alerts through the First Alert app to keep you informed whether home or away.
Reduce Alarm Chirps
The SC5 Battery Smart Smoke and CO detector is easy to install and maintain to help ensure your home and family are protected. Test alarms are working properly using the app or the alarm's single test/silence button. The SC5 alarm also provides in-app and audible notices when the alarm needs to be replaced or when the batteries are running low to help eliminate late-night chirps.
Features
FSMCO600NVCL1 Battery Smart Smoke & Carbon Monoxide Alarm

Works With & Replaces Nest Protect
Seamlessly integrate with existing Google Nest Protect Alarms* in your home to expand your safety ecosystem or if it's time to replace.
*Compatibility with Google Nest Protect requires the Google Home app and a Google Account.

Interconnect With Compatible Alarms
Create a smart and connected fire and CO safety system in your home. When one sounds, they all sound
Compatible with First Alert and Google Nest Protect Alarms

Install the Latest Smoke Alarm Technology
Equipped with Precision Detection advanced sensing technology that meets updated industry standards to provide an early warning and reduce cooking nuisance alarms.
Model | SMCO600NV |
---|---|
Type | Smart Smoke & Carbon Monoxide Alarm |
Sensor Type | Electrochemical, Photoelectric |
Sensor Information | Smoke particles of varying number and size are produced in all fires. For maximum protection, use both ionization and photoelectric sensing technologies. Ionization alarms are generally more sensitive to fast flaming fires and photoelectric alarms are generally more sensitive to smoldering fires. |
Power Source | Battery Operated |
Battery Type | CR123A, Lithium |
Battery Size | 3V, CR123A |
Number of Batteries | 6 |
Battery Replaceable | Yes |
Wireless Interconnectivity | Yes |
Alert Type | Voice |
Sound Level | 85dB at 10 feet |
Replaces Model | Google's Nest Protect Smoke & CO Alarm |
Product Height | 1.6 in |
Product Length | 5.75 in |
Product Width | 5.75 in |
Product Weight | 1 lb |
Features | End-of-Life Warning, Precision Detection, Voice Alerts, WiFi Connection, Wireless Interconnectivity |
UPC Number | 194160013724 |
Warranty | 10 Years Limited |
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Get Started With Our App
The First Alert app connects what matters most and puts you in control. Powered by Resideo’s family of brands, the app offers complete management of your home’s security, safety, comfort and water leak detection in one convenient location.
Connect your smart smoke & CO alarm with the app to check the alarm's status, test alarm's funcition and receive mobile alerts if smoke and CO are detected.