First Alert SC5 Battery (US) vs Nest Protect 2nd gen Wired (US)
Smoke and CO alarms · For the US and Canada
- Both work with Google Home.
- Neither is confirmed to work with Apple Home, Amazon Alexa, SmartThings and Home Assistant.
- They also differ on: radio, hub required and power.
Side by side
| Fact | First Alert SC5 Battery (US) | Nest Protect 2nd gen Wired (US) |
|---|---|---|
| Matter | Unconfirmed | Unconfirmed |
| Apple Home | Unconfirmed | Unconfirmed |
| Google Home | Yes[1],[2] | Yes[3],[4] |
| Amazon Alexa | Unconfirmed | Unconfirmed |
| SmartThings | Unconfirmed | Unconfirmed |
| Home Assistant | Unconfirmed | No[6] |
| Radio | Wi-Fi[1] | Wi-Fi, Bluetooth[1] |
| Hub required | Unconfirmed[1] | No[1] |
| Local control | Unconfirmed | Unconfirmed |
| Detects | Smoke, Carbon monoxide (CO)[1] | Smoke, Carbon monoxide (CO)[1] |
| Power | 6 × CR123A lithium[1],[2] | Hardwired 120 V, 3 AA backup[1],[2] |
| Alarms link wirelessly | Yes[1],[2] | Yes[1] |
A bar on the left marks the rows where they differ. Numbers in brackets lead to the source on each device's own page, which also has the notes and what to check before you buy. Checked against official sources; the older of the two records was verified on . How we verify.
Quick answers
- First Alert SC5 Battery (US) or Nest Protect 2nd gen Wired (US): which works with Apple Home?
- Not confirmed for either: we couldn't find an official source either way.
- First Alert SC5 Battery (US) or Nest Protect 2nd gen Wired (US): which works with Google Home?
- Both work with Google Home directly. More smoke and CO alarms for Google Home
- First Alert SC5 Battery (US) or Nest Protect 2nd gen Wired (US): which works with Amazon Alexa?
- Not confirmed for either: we couldn't find an official source either way.
- First Alert SC5 Battery (US) or Nest Protect 2nd gen Wired (US): which works with SmartThings?
- Not confirmed for either: we couldn't find an official source either way.
- First Alert SC5 Battery (US) or Nest Protect 2nd gen Wired (US): which works with Home Assistant?
- Neither is confirmed to work with Home Assistant. The First Alert SC5 Battery (US) isn't confirmed either way; the Nest Protect 2nd gen Wired (US) doesn't work with Home Assistant.
Full details and sources: First Alert SC5 Battery (US) · Nest Protect 2nd gen Wired (US)