Option 1 · Kidde
Kidde Smart Smoke + Indoor Air Quality Alarm
Last updated October 2026
View full device profileThe Smart Device Compare comparison
Kidde Smart Smoke + Indoor Air Quality Alarm vs X-Sense Wi-Fi Carbon Monoxide Alarm
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Key differences between Kidde Smart Smoke + Indoor Air Quality Alarm and X-Sense Wi-Fi Carbon Monoxide Alarm
A summary of selected recorded differences between these smoke & co detectors. Check the full specification table below for details and conditions.
Feature differences among your selected devices
- Air Quality Alerts (alerts): Kidde Smart Smoke + Indoor Air Quality Alarm — Yes; X-Sense Wi-Fi Carbon Monoxide Alarm — No.
- Co Alerts (alerts): Kidde Smart Smoke + Indoor Air Quality Alarm — No; X-Sense Wi-Fi Carbon Monoxide Alarm — Yes.
- Fire Alerts (alerts): Kidde Smart Smoke + Indoor Air Quality Alarm — Yes; X-Sense Wi-Fi Carbon Monoxide Alarm — No.
- Screen (display): Kidde Smart Smoke + Indoor Air Quality Alarm — No; X-Sense Wi-Fi Carbon Monoxide Alarm — Yes.
Specifications to check side by side
- Battery Type (power): Kidde Smart Smoke + Indoor Air Quality Alarm — Backup battery; X-Sense Wi-Fi Carbon Monoxide Alarm — CR123A.
Information still to confirm
- 4 of 37 comparison fields lack a resolved value for at least one selected device. Missing information is not evidence that a feature is absent.
- Check the full table and manufacturer documentation before ruling out a device.
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 2 · X-Sense
X-Sense Wi-Fi Carbon Monoxide Alarm
Last updated October 2026
View full device profileWhat the catalog tells us
Understand the tradeoffs.
These counts describe the available data, not a quality score. More features do not automatically make a better device.
11differences with recorded values for every device
4rows with missing or unspecified information
Your priorities, side by side
Focus on what changes.
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”.
Alerts
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Yes
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- Yes
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Yes
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Yes
- X-Sense Wi-Fi Carbon Monoxide Alarm
- Yes
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
Connectivity
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Yes
- X-Sense Wi-Fi Carbon Monoxide Alarm
- Yes
Catalog note
IEEE 802.11b/g/n
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
Display
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- Yes
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Not applicable / unspecified
- X-Sense Wi-Fi Carbon Monoxide Alarm
- LCD
Catalog note
The large LCD indicates how much carbon monoxide the alarm is detecting, ranging from 30 to 999 ppm.
Features
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Not recorded
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Yes
Catalog note
LED status indicators, green for normal, amber for error, red for a hazard
- X-Sense Wi-Fi Carbon Monoxide Alarm
- Yes
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Yes
Catalog note
85 dB alarm with spoken hazard announcements
- X-Sense Wi-Fi Carbon Monoxide Alarm
- Yes
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Not recorded
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
Integrations
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
Catalog note
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 Wi-Fi Carbon Monoxide Alarm
- No
Catalog note
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
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Yes
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Yes
Catalog note
Community Kidde HomeSafe integration for Home Assistant (HACS), which lists this model
- X-Sense Wi-Fi Carbon Monoxide Alarm
- Yes
Catalog note
Community X-Sense integration for Home Assistant (HACS), which lists this model and reads it from the X-Sense cloud account
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
Power
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Not recorded
- X-Sense Wi-Fi Carbon Monoxide Alarm
- 1 year
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Backup battery
- X-Sense Wi-Fi Carbon Monoxide Alarm
- CR123A
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Yes
Catalog note
Hardwired with battery backup
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
Sensors
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Yes
Catalog note
Monitors total volatile organic compounds from cleaning products and paint
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- Yes
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Yes
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- Yes
Catalog note
Photoelectric sensor for smouldering fires
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
- Kidde Smart Smoke + Indoor Air Quality Alarm
- No
- X-Sense Wi-Fi Carbon Monoxide Alarm
- No
| Specification | Kidde Smart Smoke + Indoor Air Quality Alarm | X-Sense Wi-Fi Carbon Monoxide Alarm |
|---|---|---|
| Alerts | ||
| Yes | No | |
| No | Yes | |
| Yes | No | |
| Yes | Yes | |
| No | No | |
| Connectivity | ||
| Yes | YesCatalog noteIEEE 802.11b/g/n | |
| No | No | |
| No | No | |
| No | No | |
| No | No | |
| No | 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 | ||
| Not recorded | No | |
YesCatalog noteLED status indicators, green for normal, amber for error, red for a hazard | Yes | |
YesCatalog note85 dB alarm with spoken hazard announcements | Yes | |
| No | No | |
| No | No | |
| Not recorded | 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 | |
| Yes | No | |
YesCatalog noteCommunity Kidde HomeSafe integration for Home Assistant (HACS), which lists this model | YesCatalog noteCommunity X-Sense integration for Home Assistant (HACS), which lists this model and reads it from the X-Sense cloud account | |
| No | No | |
| No | No | |
| Power | ||
| Not recorded | 1 year | |
| Backup battery | CR123A | |
YesCatalog noteHardwired with battery backup | No | |
| Sensors | ||
YesCatalog noteMonitors total volatile organic compounds from cleaning products and paint | No | |
| No | No | |
| No | Yes | |
| Yes | No | |
| No | No | |
| No | No | |
YesCatalog notePhotoelectric sensor for smouldering fires | No | |
| No | No | |
Know what’s behind the comparison.
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