Fibaro Flood Sensor (HomeKit) vs Shelly Flood Gen4 comparison

Updated July 2026

Data from Amazon and official Fibaro and Shelly sites.

2026 verdict

More radios, more coverage: the Shelly Flood Gen4 wins this water leak sensor comparison against the Fibaro Flood Sensor (HomeKit) on price, owner rating, warranty length, and weather resistance, while also reaching more connectivity options and integrations, WiFi, Zigbee, and Matter versus Bluetooth-only. The Fibaro Flood Sensor (HomeKit) still detects more categories overall, layering in tilt and tamper alerts alongside water and temperature sensing that the Shelly Flood Gen4 doesn't track. For most buyers wanting broad platform support and a stronger track record, the Shelly Flood Gen4 is the easier pick; those who specifically want tilt and tamper detection in a compact HomeKit device should stay with the Fibaro.

Feature	Fibaro Flood Sensor (HomeKit)	Shelly Flood Gen4	Winner
Price	$43.28	$39.99	Shelly Flood Gen4
Rating	4.1	4.2	Shelly Flood Gen4
Warranty	1 year	3 years	Shelly Flood Gen4
Weather Resistance	NO	IP44	Shelly Flood Gen4
Connectivity	Bluetooth	2.4 GHz WiFi, Bluetooth, Zigbee	Shelly Flood Gen4
Integrations	Apple HomeKit, 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 (HomeKit)
Alerts	Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts	Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts	Fibaro Flood Sensor (HomeKit)
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 (HomeKit)

$43.28

Buy on Amazon USA

+ Sensors: Water Leak, Temperature, Tilt
+ Alerts: Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts
- Price: $43.28 vs $39.99
- Rating: 4.1 vs 4.2

Winner

Shelly

Shelly Flood Gen4

$39.99

Buy on Amazon USA

+ Price: $39.99
+ Rating: 4.2
+ Warranty: 3 years
- Sensors: Water Leak, Temperature vs Water Leak, Temperature, Tilt
- Alerts: Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts vs Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts

Frequently Asked Questions

Which is better overall: Fibaro Flood Sensor (HomeKit) or Shelly Flood Gen4?

The Shelly Flood Gen4 wins overall with a lower price, higher owner rating, longer warranty, and weather resistance, plus WiFi, Zigbee, and Matter connectivity. The Fibaro Flood Sensor (HomeKit) still detects more event types.

What is the biggest difference between the Shelly Flood Gen4 and the Fibaro Flood Sensor (HomeKit)?

Connectivity versus sensing depth. The Shelly Flood Gen4 supports WiFi, Zigbee, Bluetooth, and Matter for wide ecosystem reach, while the Fibaro Flood Sensor (HomeKit) is Bluetooth-only but adds tilt and tamper alerts the Shelly doesn't have.

Which sensor connects to more smart home platforms?

The Shelly Flood Gen4 does, reaching Google Home, Alexa, Apple HomeKit via Matter, SmartThings, and Home Assistant, a wider spread than the Fibaro Flood Sensor (HomeKit)'s HomeKit-and-Home-Assistant scope.

Which sensor detects tilt or tampering?

Only the Fibaro Flood Sensor (HomeKit) does, with a tilt sensor that triggers tamper alerts if the unit is moved. The Shelly Flood Gen4 has no tilt or tamper detection.

Who should buy the Shelly Flood Gen4?

Choose it if you want the more affordable, better-reviewed, weather-resistant sensor with the widest protocol support across WiFi, Zigbee, and Matter.

Who should buy the Fibaro Flood Sensor (HomeKit)?

Pick it if you're in an Apple Home household and specifically want tilt and tamper detection alongside leak and temperature sensing.

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