First Alert SC5 Battery (US): what it works with
First Alert · model SC5 Battery Smart Smoke and Carbon Monoxide Alarm (SMCO600NV) · For the US and Canada
- Matter Unconfirmed
- Apple Home Unconfirmed
- Google Home Yes
- Amazon Alexa Unconfirmed
- SmartThings Unconfirmed
- Home Assistant Unconfirmed
Six replaceable CR123A lithium batteries run the First Alert SC5 battery alarm (SMCO600NV), which detects smoke and carbon monoxide. It connects over Wi-Fi, appears in the Google Home app next to Google Nest Protect alarms and links to them wirelessly. First Alert doesn't mention Apple Home, Alexa, SmartThings or Matter.
Checked against 2 sources on
Ecosystem compatibility
| Platform | Works? | Details |
|---|---|---|
| Matter | Unconfirmed | Neither First Alert nor Google mention Matter for the SC5. |
| Apple Home | Unconfirmed | First Alert's page doesn't mention Apple Home. |
| Google Home | Yes | The SC5 works in the Google Home app next to Google Nest Protect alarms. Google says it can check, silence and remotely test the alarm there and get alerts. Google Home needs a Google Account.[1],[2] |
| Amazon Alexa | Unconfirmed | Neither First Alert's page nor Google's store page mention Alexa. |
| SmartThings | Unconfirmed | No SmartThings support found. |
| Home Assistant | Unconfirmed | No Home Assistant integration found. |
“Via Matter” means you add it with that platform's Matter controller instead of a brand skill or app. “Unconfirmed” means we couldn't find an official source either way. How we verify.
Specs that matter for setup
- Radio
- Wi-Fi[1]
- Hub required
- Unconfirmed[1]
- Local control
- Unconfirmed
- Detects
- Smoke, Carbon monoxide (CO)[1]
- Radio: First Alert lists Wi-Fi as a feature and doesn't mention Bluetooth.
- Hub: Neither First Alert nor Google mentions a hub; the alarm connects over Wi-Fi and uses the Resideo Connect app. Not stated either way.
- Local control: First Alert doesn't say whether the alarm works without the cloud.
- Detects: Photoelectric smoke and electrochemical CO sensors. First Alert says it conforms to UL 217 10th Edition; the page doesn't name a CO standard.
- Power: First Alert lists six replaceable CR123A lithium batteries for SMCO600NV; Google's store page says batteries are in the box of the battery version. A hardwired SC5 also exists with its own record.
- Alarms link wirelessly: First Alert lists wireless interconnect: when one alarm sounds, all compatible alarms sound, naming First Alert and Google Nest Protect alarms.
Before you buy
- Google Home use needs a Google Account.
- A hardwired SC5 exists; this record covers only the battery model SMCO600NV.
Quick answers
- Does the First Alert SC5 Battery (US) work with Apple Home?
- Not confirmed. We couldn't find an official source either way. First Alert's page doesn't mention Apple Home.
- Does the First Alert SC5 Battery (US) work with Google Home?
- Yes. The First Alert SC5 Battery (US) works with Google Home directly. The SC5 works in the Google Home app next to Google Nest Protect alarms. Google says it can check, silence and remotely test the alarm there and get alerts. Google Home needs a Google Account. More smoke and CO alarms for Google Home
- Does the First Alert SC5 Battery (US) work with Amazon Alexa?
- Not confirmed. We couldn't find an official source either way. Neither First Alert's page nor Google's store page mention Alexa.
- Does the First Alert SC5 Battery (US) work with SmartThings?
- Not confirmed. We couldn't find an official source either way. No SmartThings support found.
- Does the First Alert SC5 Battery (US) work with Home Assistant?
- Not confirmed. We couldn't find an official source either way. No Home Assistant integration found.
Sources
- SC5 Battery Smart Smoke and Carbon Monoxide Alarm — First Alert manufacturer · accessed Oct 23, 2026
- First Alert SC5 Smart Smoke & Carbon Monoxide Alarm — Google Store ecosystem · accessed Oct 23, 2026
Official product page: www.firstalert.com