
Option 1 · First Alert
First Alert SMCO410 Smoke Detector & CO Alarm
Last updated October 2026
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A summary of selected recorded differences between these smoke & co detectors. Check the full specification table below for details and conditions.
These observations are derived from recorded catalog data and have not all been independently verified. Confirm details with the manufacturer before purchasing.
Compare capabilities, compatibility and setup requirements.

Option 1 · First Alert
Last updated October 2026
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Option 2 · X-Sense
Last updated October 2026
View full device profileWhat the catalog tells us
These counts describe the available data, not a quality score. More features do not automatically make a better device.
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Compare the stated test conditions. Catalog battery figures alone do not predict runtime in your home.
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Mark the specifications you care about. Open manufacturer sources for verification scope; fields without citations remain catalog data. Expand notes for other qualifications.
Showing 37 of 37 rows. “Not recorded” does not mean “No”.
Works with Ring Base Station for notifications while away (Ring Alarm with Smoke and CO Listener required)
End-of-life warning
IEEE 802.11b/g/n
The large LCD indicates how much carbon monoxide the alarm is detecting, ranging from 30 to 999 ppm.
Precision Detection reduces cooking nuisance alarms
Alexa's smart home API has no smoke or CO alarm type: the only supported route is the Matter Smoke CO Alarm device type, which this alarm does not speak
X-Sense confirms its smoke and CO alarms do not work with Alexa: only the AS05 and AS08 security kits are Alexa compatible, and Alexa's API has no smoke or CO alarm type anyway
Community X-Sense integration for Home Assistant (HACS), which lists this model and reads it from the X-Sense cloud account
Pairs with a SmartThings hub as a standard Z-Wave device
Precision Detection advanced sensing technology
| Specification | First Alert SMCO410 Smoke Detector & CO Alarm | X-Sense Wi-Fi Carbon Monoxide Alarm |
|---|---|---|
| Alerts | ||
| No | No | |
| Yes | Yes | |
YesCatalog noteWorks with Ring Base Station for notifications while away (Ring Alarm with Smoke and CO Listener required) | No | |
YesCatalog noteEnd-of-life warning | Yes | |
| No | No | |
| Connectivity | ||
| No | YesCatalog noteIEEE 802.11b/g/n | |
| No | No | |
| No | No | |
| No | No | |
| No | No | |
| Yes | No | |
| No | No | |
| Display | ||
| No | Yes | |
| Not applicable / unspecified | LCDCatalog noteThe large LCD indicates how much carbon monoxide the alarm is detecting, ranging from 30 to 999 ppm. | |
| Features | ||
| No | No | |
| No | Yes | |
| Yes | Yes | |
| No | No | |
YesCatalog notePrecision Detection reduces cooking nuisance alarms | No | |
| No | No | |
| Integrations | ||
NoCatalog noteAlexa's smart home API has no smoke or CO alarm type: the only supported route is the Matter Smoke CO Alarm device type, which this alarm does not speak | NoCatalog noteX-Sense confirms its smoke and CO alarms do not work with Alexa: only the AS05 and AS08 security kits are Alexa compatible, and Alexa's API has no smoke or CO alarm type anyway | |
| No | No | |
| No | No | |
| Yes | YesCatalog noteCommunity X-Sense integration for Home Assistant (HACS), which lists this model and reads it from the X-Sense cloud account | |
| No | No | |
YesCatalog notePairs with a SmartThings hub as a standard Z-Wave device | No | |
| Power | ||
| 10 years | 1 year | |
| Sealed lithium | CR123A | |
| No | No | |
| Sensors | ||
| No | No | |
| No | No | |
| Yes | Yes | |
| No | No | |
| No | No | |
| No | No | |
YesCatalog notePrecision Detection advanced sensing technology | No | |
| No | No | |
The table matches specifications by section and field. It preserves notes, separates missing data from explicit “No” values, and keeps qualifications attached to their values. No overall winner is assigned from feature counts.
Read our comparison methodology