Google Nest Protect (Battery) vs X-Sense WiFi Smoke & CO Detector

The Google Nest Protect (Battery) is the more capable pick: both units sense smoke and carbon monoxide, but the Nest adds a full sensor suite, self-testing, a pathlight, Steam Check, Google Home and Home Assistant support, and a higher owner rating. The X-Sense WiFi Smoke & CO Detector wins on price, a 5-year warranty and its built-in LCD screen.

Yes. The Google Nest Protect (Battery) and the X-Sense WiFi Smoke & CO Detector both pair a smoke sensor with a carbon monoxide sensor in one unit, so either can replace a separate CO detector. The difference is in the extras around that core, not the two-hazard coverage.

Smarts versus simplicity. The Google Nest Protect (Battery) brings self-test, a pathlight, Steam Check and Google Home and Home Assistant integration, while the X-Sense WiFi Smoke & CO Detector keeps things basic with an easy-to-read LCD, a longer warranty and no smart home platform links.

Only the X-Sense WiFi Smoke & CO Detector has a screen, an LCD that shows status at a glance, and it also carries the longer 5-year warranty. The Google Nest Protect (Battery) has no display and a 2-year warranty, leaning instead on app alerts and voice warnings.

Buy the Google Nest Protect (Battery) if you want combined smoke and CO detection wrapped in smart features, spoken early warnings, self-testing and a pathlight, plus Google Home and Home Assistant control, and you are willing to pay more for that depth.

Buy the X-Sense WiFi Smoke & CO Detector if you want the same smoke-and-CO coverage for less, value a clear LCD readout and a 5-year warranty, and do not need self-testing or smart home platform integration.