First Alert - Smoke and Carbon Monoxide Detector Hardwired - White
Customers are saying
Customers commend the product for its straightforward installation process and reliable overall performance. While users appreciate the clean design and convenient connectivity options, some note that the device lacks certain advanced features and can be overly sensitive to steam. Additionally, a few customers expressed a desire for a built-in night light and improved false alert filtering to enhance the overall experience.
Features
SC5 Hardwire Smart Smoke & Carbon Monoxide Alarm
The fire safety you trust is now connected and compatible. Add smart fire safety alerts to your home with the First Alert SC5 Hardwire 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
Battery backup provides continuous protection during power outages
Specifications
- Detector TypeSmoke, Carbon monoxideSensor TypePhotoelectric, ElectrochemicalWireless ConnectivityWi-FiPower SourceHard wired, Battery-poweredNumber of Devices Included1
Reviews
Rating 4.1 out of 5 stars with 170 reviews
- Installation Ease (79)
- Overall Performance (27)
- Connectivity (20)
- Compatibility (11)
- Design (5)
- Features (11)
- False Alert Filtering (9)
- Night Light (5)
- Sensitivity (3)
Customer Images
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
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First Alert Hardwired Smart Smoke Alarm

Get alerted the minute a dangerous hazard threatens your home with the 2-in-1 smoke and carbon monoxide detector. Engineered to tell the difference between dangerous smoke and burning food, so you’ll always know when there’s a real emergency. It’s also backed by SimpliSafe’s award-winning security system and 24/7 professional monitoring—any time there’s trouble, emergency assistance will be quickly sent to your front door.* Setup is easy too with the included hardware. Plus, thoughtful notifications will give you daily updates on your detectors’ status, so you know it’s working properly. *Emergency dispatch is available with select monitoring plans.

Nest Protect reliably detects and alerts you to the presence of smoke or carbon monoxide in your home. The alarm speaks to you in a calm, clear, human voice, telling you the location of the danger. It also provides smartphone alerts and battery status updates to help protect your home. This hardwired version is suitable for homes with existing hardwired smoke or CO detectors.
| Pros for First Alert - Smoke and Carbon Monoxide Detector Hardwired - White | |||
|---|---|---|---|
| Installation Ease, Overall Performance, Connectivity, Compatibility, Design | Installation Ease, Connectivity, Overall Performance, Compatibility, Battery Life | Ease of use | There were no pros for this product— |
| Cons for First Alert - Smoke and Carbon Monoxide Detector Hardwired - White | |||
| Features, Night Light, False Alert Filtering, Sensitivity | Features, Night Light, Alarm Accuracy, Size | There were no cons for this product— | There were no cons for this product— |


































































