First Alert SC5 Smart Smoke and Carbon Monoxide Alarm
- Battery powered, smoke and CO in one unit
- 3V CR123A lithium batteries built in
- Google Nest Protect compatible, app alerts to your phone
- Low battery notification in place of late night chirps
- Voice alerts give the type and location of danger
- Interconnects so all compatible alarms sound together
- 5.75 x 5.75 x 1.6 inches, 16 oz
Updated 14 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A straightforward way to add connected smoke and CO protection without running wires. With no household power behind it, everything rests on the batteries, so the low battery alerts matter.
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ASIN: B0DS2W3794Model: SC5Category: Combination Smoke & Carbon Monoxide Detectors
Overview
Hallways, bedrooms and rentals with no alarm wiring are where this battery powered First Alert alarm earns its place, covering smoke and carbon monoxide in one housing. Lithium cells power it, and the First Alert app pushes alerts to a phone when it sounds.
Wire-free placement plus phone alerts is the reason to buy: it can go in rooms an electrician never wired and still link with compatible alarms. Low battery warnings arrive as notifications instead of chirps at night. Nothing in the listing says how long the batteries last or whether they can be swapped.
Who it's for
Apartments, older homes and add-on rooms without alarm wiring suit this alarm. Where a hardwired circuit already exists, a hardwired model leaves batteries to a backup role.
Pros and cons
- Runs on batteries, no wiring needed
- Smoke and CO sensing in one housing
- Phone alerts through the First Alert app
- Compatible with Google Nest Protect
- Battery life not listed
- No household power to fall back on
- Phone alerts depend on the app
Performance notes
Precision Detection Technology governs how early it reacts and how often it ignores nuisance triggers. With lithium cells as the only power, the low battery notification is the safeguard against a silent unit. Interconnect and app alerts carry the warning beyond the room the alarm is in.
Specifications
| Brand | First Alert |
|---|---|
| Model | SC5 |
| Dimensions & fit | |
| Item Weight | 1 pound |
| Item Dimensions D X W X H | 5.7 × 1.6 × 5.7 inches |
| Power & efficiency | |
| Power Source | Battery |
| Construction & materials | |
| Color | White |
| Included components | |
| Unit Count | 1 |
| Other details | |
| Alarm | Audible |
| Number Of Items | 1 |
| Product Style | Battery |
| Builtin Media | 3V CR123A Lithium Batteries |
| Mfr Part Number | SMCO600NV |
| Item Type Name | Combination Alarm |
| Item Highlight | SMCO600NV |
Frequently asked questions
Is the First Alert SMCO600NV a hardwired alarm?
No. It is the battery powered version, running on 3V CR123A lithium batteries, and it does not connect to household wiring.
Does the First Alert SC5 battery alarm chirp when the batteries are low?
It sends a low battery notification, which First Alert says eliminates late night chirps.
Can the First Alert SMCO600NV link with Nest Protect alarms?
Yes. It is listed as compatible with Google's Nest Protect, and when one compatible alarm sounds, all of them sound.
What is the date printed on the First Alert SMCO600NV?
It is the manufacture date, which identifies when the alarm was produced.