Smoke & CO Detectors · Head to head

Shelly Plus Smoke Alarm vs X-Sense Wi-Fi Carbon Monoxide Alarm

Full Smart Smoke & CO Detectors comparison in 2026

Data from Amazon and official Shelly and X-Sense sites.
2026 verdict
X-Sense Wi-Fi Carbon Monoxide Alarm has the better all-around case than Shelly Plus Smoke Alarm in 2026, starting with price, rating, and warranty. Its clearest strengths are price, rating, and warranty, and it still looks stronger on screen. Shelly Plus Smoke Alarm is the better fit only for buyers who prioritize connectivity and integrations above everything else here. That makes X-Sense Wi-Fi Carbon Monoxide Alarm the clearer recommendation in 2026.
vs
FeatureShelly Plus Smoke AlarmX-Sense Wi-Fi Carbon Monoxide AlarmWinner
Price€39.95€28.73X-Sense Wi-Fi Carbon Monoxide Alarm
Rating4.44.6X-Sense Wi-Fi Carbon Monoxide Alarm
Warranty3 years5 yearsX-Sense Wi-Fi Carbon Monoxide Alarm
Connectivity2.4 GHz WiFi, Bluetooth2.4 GHz WiFiShelly Plus Smoke Alarm
IntegrationsGoogle Home, Alexa, Samsung SmartThings, Home AssistantNoneShelly Plus Smoke Alarm
ScreenNOYESX-Sense Wi-Fi Carbon Monoxide Alarm
SensorsSmokeCOTie
AlertsFire Alerts, Low Battery AlertsCO Alerts, Low Battery AlertsTie
Built-in SirenYESYESTie
Built-in LightYESYESTie
Tests ItselfNONOTie
PathlightNONOTie

Frequently Asked Questions

Which is better overall: Shelly Plus Smoke Alarm or X-Sense Wi-Fi Carbon Monoxide Alarm?

X-Sense Wi-Fi Carbon Monoxide Alarm has the stronger overall profile in this comparison, especially for price, rating, and warranty.

What is the biggest difference between Shelly Plus Smoke Alarm and X-Sense Wi-Fi Carbon Monoxide Alarm?

Price is one of the clearest differences: Shelly Plus Smoke Alarm lists €39.95, while X-Sense Wi-Fi Carbon Monoxide Alarm lists €28.73.

Which one looks better on price?

Shelly Plus Smoke Alarm is listed at €39.95, while X-Sense Wi-Fi Carbon Monoxide Alarm is listed at €28.73. X-Sense Wi-Fi Carbon Monoxide Alarm (better spec).

Who should buy Shelly Plus Smoke Alarm?

Choose Shelly Plus Smoke Alarm if your priority is connectivity and integrations and that matters more than price.

Who should buy X-Sense Wi-Fi Carbon Monoxide Alarm?

Choose X-Sense Wi-Fi Carbon Monoxide Alarm if your priority is price and rating and that matters more than connectivity.

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