Winner
Updated November 2026
Data from the official Kidde and X-Sense sites.
2026 verdict
The Kidde Smart Smoke & CO Detector with Ring wins this smoke alarm comparison mainly on its Ring integration, reporting for free into the Ring app, plus a Steam Check feature the X-Sense SC07-MR Smart Smoke & CO Alarm does not have.
The X-Sense SC07-MR Smart Smoke & CO Alarm makes up ground with an on-device LCD screen the Kidde alarm lacks entirely. Both units combine smoke and carbon monoxide sensing in one alarm, both interconnect wirelessly with other units of the same brand, and neither supports Apple HomeKit, Google Home, Samsung SmartThings or Matter. Choose the Kidde Smart Smoke & CO Detector with Ring if you want Alexa announcements through the Ring skill, Steam Check and free Ring app reporting; choose the X-Sense SC07-MR Smart Smoke & CO Alarm if an on-device screen matters more to you than those integrations.
Works with
Connectivity
- Wi-Fi 2.4 GHz
vs
Works with
Connectivity
- Wi-Fi 2.4 GHz
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| Feature | Kidde Smart Smoke & CO Detector with Ring | X-Sense SC07-MR Smart Smoke & CO Alarm | Winner |
|---|---|---|---|
| Rating | 4.3 | 4.6 | X-Sense SC07-MR Smart Smoke & CO Alarm |
| Screen | NO | YES | X-Sense SC07-MR Smart Smoke & CO Alarm |
| Steam Check | YES | NO | Kidde Smart Smoke & CO Detector with Ring |
| Connectivity | 2.4 GHz WiFi, Other | 2.4 GHz WiFi, Other | Tie |
| Integrations | Home Assistant | Home Assistant | Tie |
| Sensors | Smoke, CO | Smoke, CO | Tie |
| Alerts | Fire Alerts, CO Alerts, Low Battery Alerts | Fire Alerts, CO Alerts, Low Battery Alerts | Tie |
| Built-in Siren | YES | YES | Tie |
| Pathlight | NO | NO | Tie |
Winner
$69.97
- + Steam Check: YES
- - Rating: 4.3 vs 4.6
- - Screen: NO vs YES
- + Rating: 4.6
- + Screen: YES
- - Steam Check: NO vs YES
Frequently Asked Questions
Which is better overall: the Kidde Smart Smoke & CO Detector with Ring or the X-Sense SC07-MR Smart Smoke & CO Alarm?
The Kidde Smart Smoke & CO Detector with Ring comes out ahead, mainly on the strength of its free reporting into the Ring app, whose Alexa skill can announce its alerts, and its Steam Check feature.
What is the biggest difference between them?
The Kidde Smart Smoke & CO Detector with Ring reports for free into the Ring app, whose Alexa skill can announce its alerts, while the X-Sense SC07-MR Smart Smoke & CO Alarm has no such route to Alexa but includes an on-device LCD screen the Kidde alarm does not have.
Does either one reduce false alarms from cooking?
Yes, the Kidde Smart Smoke & CO Detector with Ring includes Steam Check to cut cooking-related nuisance alarms; the X-Sense SC07-MR Smart Smoke & CO Alarm does not list this feature.
Does either alarm have a screen?
The X-Sense SC07-MR Smart Smoke & CO Alarm has a built-in LCD screen, while the Kidde Smart Smoke & CO Detector with Ring has no screen.
Who should buy the Kidde Smart Smoke & CO Detector with Ring?
Buyers who want free Ring app reporting with alerts Alexa can announce through the Ring skill, and Steam Check to reduce cooking false alarms should choose the Kidde Smart Smoke & CO Detector with Ring.
Who should buy the X-Sense SC07-MR Smart Smoke & CO Alarm?
Buyers who want to check alarm status on an on-device screen, and do not need Ring integration, should choose the X-Sense SC07-MR Smart Smoke & CO Alarm instead.
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