Shelly Plus Smoke Alarm vs X-Sense Wi-Fi Smoke Alarm comparison

Data from Amazon and official Shelly and X-Sense sites.

2026 verdict

For a connected smoke alarm, the Shelly Plus Smoke Alarm wins this pairing with a higher owner rating and far broader smart home integration than the X-Sense. Both are smoke-only WiFi units, but the Shelly plugs into Google Home, Alexa, SmartThings and Home Assistant with automations, while the X-Sense Wi-Fi Smoke Alarm stays inside its own app with no platform links. The X-Sense fights back on longevity: its CR123A cell is rated for a 10-year life against the Shelly's 5, and it backs that with a longer 5-year warranty. Choose the Shelly Plus Smoke Alarm if you want automation-ready smoke detection for a multi-platform smart home; choose the X-Sense Wi-Fi Smoke Alarm if a longer battery rating and warranty matter more than integrations.

Winner

Shelly

Shelly Plus Smoke Alarm

25% OFF

€39.95

€53.43

Buy on Amazon Germany

X-Sense

X-Sense Wi-Fi Smoke Alarm

Price unavailable right now

Buy on Amazon Italy

Feature	Shelly Plus Smoke Alarm	X-Sense Wi-Fi Smoke Alarm	Winner
Rating	4.4	4.2	Shelly Plus Smoke Alarm
Warranty	3 years	5 years	X-Sense Wi-Fi Smoke Alarm
Battery Life	5 years	10 years	X-Sense Wi-Fi Smoke Alarm
Connectivity	2.4 GHz WiFi, Bluetooth	2.4 GHz WiFi	Shelly Plus Smoke Alarm
Integrations	Google Home, Alexa, Samsung SmartThings, Home Assistant	None	Shelly Plus Smoke Alarm
Screen	NO	NO	Tie
Sensors	Smoke	Smoke	Tie
Alerts	Fire Alerts, Low Battery Alerts	Fire Alerts, Low Battery Alerts	Tie
Built-in Siren	YES	YES	Tie
Built-in Light	YES	YES	Tie
Tests Itself	NO	NO	Tie
Pathlight	NO	NO	Tie

Winner

Shelly

Shelly Plus Smoke Alarm

25% OFF

€39.95

€53.43

Buy on Amazon Germany

+ Rating: 4.4
+ Connectivity: 2.4 GHz WiFi, Bluetooth
+ Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant
- Warranty: 3 years vs 5 years
- Battery Life: 5 years vs 10 years

X-Sense

X-Sense Wi-Fi Smoke Alarm

Price unavailable right now

Buy on Amazon Italy

+ Warranty: 5 years
+ Battery Life: 10 years
- Rating: 4.2 vs 4.4
- Connectivity: 2.4 GHz WiFi vs 2.4 GHz WiFi, Bluetooth

Frequently Asked Questions

Which smoke alarm is better, the Shelly Plus Smoke Alarm or the X-Sense Wi-Fi Smoke Alarm?

The Shelly Plus Smoke Alarm is the better overall pick, with a higher owner rating and broad support for Google Home, Alexa, SmartThings and Home Assistant. The X-Sense Wi-Fi Smoke Alarm counters with a 10-year battery rating and a longer 5-year warranty, but no smart home integration.

What is the biggest difference between them?

Smart home reach. The Shelly Plus Smoke Alarm integrates with Google Home, Alexa, SmartThings and Home Assistant and supports automations, while the X-Sense Wi-Fi Smoke Alarm connects only to its own app with no platform links.

Do either of these detect carbon monoxide?

No. Both the Shelly Plus Smoke Alarm and the X-Sense Wi-Fi Smoke Alarm are smoke-only devices, so each needs a separate CO detector if you want carbon monoxide coverage as well.

How do battery life and warranty compare?

The X-Sense Wi-Fi Smoke Alarm leads on both: its CR123A cell is rated for 10 years and it carries a 5-year warranty, versus the Shelly Plus Smoke Alarm's roughly 5-year battery rating and 3-year warranty.

Who should buy the Shelly Plus Smoke Alarm?

Buy the Shelly Plus Smoke Alarm if you want automation-friendly WiFi smoke detection that ties into Google Home, Alexa, SmartThings and Home Assistant, especially in a Home Assistant or MQTT setup.

Who should buy the X-Sense Wi-Fi Smoke Alarm?

Buy the X-Sense Wi-Fi Smoke Alarm if you value the longest battery rating and warranty and simple hub-free WiFi phone alerts, and you do not need smart home platform integration.

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