Shelly Flood Gen4 vs X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector

Updated September 2026

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

2026 verdict

Matter flood sensor versus a budget freeze puck?

Winner

Shelly Flood Gen4

$39.99

Buy on Amazon USA

The Shelly Flood Gen4 wins this water leak sensor matchup on the stronger owner reviews, broader connectivity and broader smart home integrations. Give the X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector a look if the more affordable price, a 5-year warranty and IP66 weather sealing matter more in your setup. Buy the Shelly Flood Gen4 if Matter, Apple HomeKit and a sensing cable are the brief; buy the X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector if you want a cheaper freeze alarm with IP66 sealing and a 5-year warranty.

Winner

Shelly

Shelly Flood Gen4

$39.99

Buy on Amazon USA

X-Sense

X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector

17% OFF

$14.99

$17.99

Buy on Amazon USA

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Feature	Shelly Flood Gen4	X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector	Winner
Price	$39.99	$14.99	X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector
Rating	4.2	3.7	Shelly Flood Gen4
Warranty	3 years	5 years	X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector
Weather Resistance	IP44	IP66	X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector
Connectivity	2.4 GHz WiFi, Bluetooth, Zigbee	2.4 GHz WiFi	Shelly Flood Gen4
Integrations	Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter	None	Shelly Flood Gen4
Alerts	Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts	Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery Alerts	X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector
On Device Alert Light	YES	NO	Shelly Flood Gen4
Battery Life	2 years	2 years	Tie
Sensors	Water Leak, Temperature	Water Leak, Temperature	Tie
On Device Alert Sound	YES	YES	Tie

Winner

Shelly

Shelly Flood Gen4

$39.99

Buy on Amazon USA

+ Rating: 4.2
+ Connectivity: 2.4 GHz WiFi, Bluetooth, Zigbee
+ Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- Price: $39.99 vs $14.99
- Warranty: 3 years vs 5 years

X-Sense

X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector

17% OFF

$14.99

$17.99

Buy on Amazon USA

+ Price: $14.99
+ Warranty: 5 years
+ Weather Resistance: IP66
- Rating: 3.7 vs 4.2
- Connectivity: 2.4 GHz WiFi vs 2.4 GHz WiFi, Bluetooth, Zigbee

Frequently Asked Questions

For a water leak sensor, is Shelly Flood Gen4 better than X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector?

The Shelly Flood Gen4 is better overall, winning on the stronger owner reviews, broader connectivity and broader smart home integrations. The X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector still leads on the more affordable price and a 5-year warranty.

What should I compare first on the Shelly Flood Gen4 versus the X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector?

The X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector is built around six probes, freeze alerts at 39 F and a 110 dB siren on hub-free 2.4 GHz Wi-Fi. The Shelly Flood Gen4 answers with the stronger owner reviews, broader connectivity and broader smart home integrations.

Which has the longer warranty, the Shelly Flood Gen4 or the X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector?

The X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector is covered for 5 years, against 3 years on the Shelly Flood Gen4.

Which of the Shelly Flood Gen4 and the X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector works with more smart home platforms?

The Shelly Flood Gen4 reaches Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter. The X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector has no third-party smart home integrations and stays in its own app.

Who should buy the Shelly Flood Gen4?

Most people comparing these two water leak sensors, because the Shelly Flood Gen4 wins on the stronger owner reviews and broader connectivity.

Who should buy the X-Sense 2-in-1 Wi-Fi Water Leak & Freeze Detector?

Buyers who specifically want the more affordable price and a 5-year warranty, even though the Shelly Flood Gen4 wins overall.

Full comparison table

Compare all 32 Water Leak Sensors side by side

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