Fibaro Flood Sensor (Z-Wave) vs Shelly Flood Gen4 (2026)

Updated July 2026

Data from Amazon and official Fibaro and Shelly sites.

2026 verdict

Winner

$39.99

Multi-protocol flexibility decides this water leak sensor comparison in favor of the Shelly Flood Gen4, which pairs a lower price with a longer warranty, an IP44 weather-resistance rating, and WiFi, Bluetooth, Zigbee, and Matter connectivity that dwarfs the Fibaro Flood Sensor (Z-Wave)'s single Z-Wave radio. The Fibaro still holds an edge in raw owner satisfaction and adds more onboard sensing, water leak, temperature, and tilt detection all bundled with tamper alerts. Both sensors also monitor temperature and freeze risk alongside leaks. Pick the Shelly Flood Gen4 if you want protocol flexibility, Matter support, and a weatherproof housing at a friendlier price, and choose the Fibaro Flood Sensor (Z-Wave) if you already run Z-Wave and value its higher rating and tilt/tamper sensing.

Fibaro

Fibaro Flood Sensor (Z-Wave)

16% OFF

$66.12

$78.53

Buy on Amazon USA

Winner

Shelly

Shelly Flood Gen4

$39.99

Buy on Amazon USA

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Feature	Fibaro Flood Sensor (Z-Wave)	Shelly Flood Gen4	Winner
Price	$66.12	$39.99	Shelly Flood Gen4
Rating	4.3	4.2	Fibaro Flood Sensor (Z-Wave)
Warranty	1 year	3 years	Shelly Flood Gen4
Weather Resistance	NO	IP44	Shelly Flood Gen4
Connectivity	Z-Wave	2.4 GHz WiFi, Bluetooth, Zigbee	Shelly Flood Gen4
Integrations	Samsung SmartThings, Home Assistant	Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter	Shelly Flood Gen4
Sensors	Water Leak, Temperature, Tilt	Water Leak, Temperature	Fibaro Flood Sensor (Z-Wave)
Alerts	Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts	Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts	Fibaro Flood Sensor (Z-Wave)
Battery Life	2 years	2 years	Tie
On Device Alert Sound	YES	YES	Tie
On Device Alert Light	YES	YES	Tie

Fibaro

Fibaro Flood Sensor (Z-Wave)

16% OFF

$66.12

$78.53

Buy on Amazon USA

+ Rating: 4.3
+ Sensors: Water Leak, Temperature, Tilt
+ Alerts: Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts
- Price: $66.12 vs $39.99
- Warranty: 1 year vs 3 years

Winner

Shelly

Shelly Flood Gen4

$39.99

Buy on Amazon USA

+ Price: $39.99
+ Warranty: 3 years
+ Weather Resistance: IP44
- Rating: 4.2 vs 4.3
- Sensors: Water Leak, Temperature vs Water Leak, Temperature, Tilt

Frequently Asked Questions

Is the Fibaro Flood Sensor (Z-Wave) or the Shelly Flood Gen4 the better water leak sensor?

The Shelly Flood Gen4 wins overall with a lower price, a longer warranty, weather resistance, and support for WiFi, Zigbee, Bluetooth, and Matter. The Fibaro Flood Sensor (Z-Wave) counters with a higher owner rating and extra tilt and tamper sensing.

What is the biggest difference between the Fibaro Flood Sensor (Z-Wave) and the Shelly Flood Gen4?

Connectivity range. The Fibaro Flood Sensor (Z-Wave) is limited to a single Z-Wave radio, while the Shelly Flood Gen4 supports WiFi, Bluetooth, Zigbee, and Matter, giving it a much wider path into different smart home ecosystems.

Which sensor is rated for damp or wet environments?

The Shelly Flood Gen4 carries an IP44 weather-resistance rating, while the Fibaro Flood Sensor (Z-Wave) has no confirmed weather rating listed.

Which one has tilt sensing and tamper alerts?

Only the Fibaro Flood Sensor (Z-Wave). It supports tilt detection paired with tamper alerts, a category the Shelly Flood Gen4 does not include.

Who should buy the Shelly Flood Gen4?

Choose it if you want a more affordable, weather-resistant sensor with the widest protocol support, WiFi, Zigbee, Bluetooth, and Matter, plus a longer warranty.

Who should buy the Fibaro Flood Sensor (Z-Wave)?

Buy it if you already run a Z-Wave hub and want the higher-rated option with built-in tilt sensing and tamper detection.

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