Water Leak Sensors · Head to head

Fibaro Flood Sensor (HomeKit) vs Sonoff Zigbee Water Leak Sensor

Full Smart Water Leak Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Fibaro and Sonoff sites.
2026 verdict
More sensing and a siren at the leak decide this one for the Fibaro Flood Sensor (HomeKit) over the Sonoff Zigbee Water Leak Sensor.
Fibaro Flood Sensor (HomeKit)
Winner
Fibaro Flood Sensor (HomeKit)

Last recorded priceJan 1, 2026$43.28

Currently unavailable on Amazon USA
See on Amazon USA
The Fibaro adds temperature and tilt to leak detection and warns with a sound and a light on the unit, while the Sonoff is a waterproof Zigbee puck with no local alarm at all. The Sonoff Zigbee Water Leak Sensor answers on price, on the stronger owner rating and on battery life, at five years on a CR2477 against two on the Fibaro, and it reaches Google Home, SmartThings and Home Assistant, with Apple Home and Matter available through a SONOFF bridge. The Fibaro Flood Sensor (HomeKit) is built for Apple Home and Bluetooth range. Pick the Fibaro Flood Sensor (HomeKit) for an Apple Home that wants rich sensing, and the Sonoff Zigbee Water Leak Sensor for a Zigbee home that wants cheap, long-lasting coverage.
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FeatureFibaro Flood Sensor (HomeKit)Sonoff Zigbee Water Leak SensorWinner
Rating4.14.5Sonoff Zigbee Water Leak Sensor
Battery Life2 years5 yearsSonoff Zigbee Water Leak Sensor
IntegrationsApple HomeKit, Home AssistantGoogle Home, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterSonoff Zigbee Water Leak Sensor
SensorsWater Leak, Temperature, TiltWater LeakFibaro Flood Sensor (HomeKit)
AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper AlertsWater Leak Alerts, Low Battery AlertsFibaro Flood Sensor (HomeKit)
On Device Alert SoundYESNOFibaro Flood Sensor (HomeKit)
On Device Alert LightYESNOFibaro Flood Sensor (HomeKit)
Warranty1 year1 yearTie
ConnectivityBluetoothZigbeeTie

What the differences mean

Sensing

The Fibaro Flood Sensor (HomeKit) senses water, temperature and tilt and raises tamper alerts if it is moved. The Sonoff Zigbee Water Leak Sensor is a water-only device with no temperature sensor, so it cannot warn about a freezing pipe.

Hub

The Fibaro Flood Sensor (HomeKit) pairs over Bluetooth to an Apple TV, HomePod or iPad acting as a HomeKit hub. The Sonoff Zigbee Water Leak Sensor needs a Zigbee hub such as a SONOFF bridge, Home Assistant coordinator or Hubitat.

Local alarm

The Fibaro Flood Sensor (HomeKit) has both a sound and a light on the unit. The Sonoff Zigbee Water Leak Sensor has neither, so every warning depends on the hub, the app and the automations you build.

Battery

The Sonoff Zigbee Water Leak Sensor runs about five years on a CR2477, well beyond the two years of the Fibaro Flood Sensor (HomeKit) on its CR123A, though the Fibaro can be wired to 12/24V DC so its battery is only backup.

Integrations

The Sonoff Zigbee Water Leak Sensor covers Google Home, SmartThings and Home Assistant, and reaches Apple Home and Matter through a SONOFF Matter bridge. The Fibaro Flood Sensor (HomeKit) is native to Apple Home and also works with Home Assistant.

Weather sealing

The Sonoff Zigbee Water Leak Sensor carries an IP67 rating and a gasket-sealed battery door, so it handles damp spots and a dunking. The Fibaro Flood Sensor (HomeKit) publishes no weather-resistance rating, so it is best kept dry.

Which one to buy if

Winner
Fibaro

Fibaro Flood Sensor (HomeKit)

Prime exclusive deal

Last recorded priceJan 1, 2026$43.28

Currently unavailable on Amazon USA
See on Amazon USA
  • + Sensors: Water Leak, Temperature, Tilt
  • + Alerts: Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts
  • + On Device Alert Sound: YES
  • - Rating: 4.1 vs 4.5
  • - Battery Life: 2 years vs 5 years
Sonoff

Sonoff Zigbee Water Leak Sensor

10% OFF
Prime exclusive deal
$22.48
$24.99

Last recorded price

Buy on Amazon USA
  • + Rating: 4.5
  • + Battery Life: 5 years
  • + Integrations: Google Home, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
  • - Sensors: Water Leak vs Water Leak, Temperature, Tilt
  • - Alerts: Water Leak Alerts, Low Battery Alerts vs Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts

What owners say

Owners of both devices report fast, fuss-free setup and alerts that arrive when water shows up, but they are buying different things. Sonoff Zigbee Water Leak Sensor owners love the price, which lets them place several, and they describe pairing in a minute or two on Home Assistant and Hubitat and automations that trigger a shutoff valve. Their friction is SmartThings, where some had to force-pair around an unscannable QR code, plus the less common CR2477 cell. Fibaro Flood Sensor (HomeKit) owners focus on the sensor itself: the on-device sound and light, the temperature and tilt channels and a battery that reads near full after a year. Their warnings are Bluetooth range, which can demand a second Apple TV, and an alarm that cannot be silenced until the contacts dry.

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Fibaro Flood Sensor (HomeKit)
  • Sonoff Zigbee Water Leak Sensor

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Frequently Asked Questions

Which is better overall: the Fibaro Flood Sensor (HomeKit) or the Sonoff Zigbee Water Leak Sensor?

The Fibaro Flood Sensor (HomeKit), for an Apple Home that wants temperature and tilt sensing and a local alarm. The Sonoff Zigbee Water Leak Sensor is the better value for a Zigbee home on Home Assistant or Hubitat that wants cheap, long-lasting leak coverage.

What is the biggest difference between the Fibaro Flood Sensor (HomeKit) and the Sonoff Zigbee Water Leak Sensor?

What each one senses and how it warns. The Fibaro Flood Sensor (HomeKit) adds temperature and tilt and has an on-device alarm, while the Sonoff Zigbee Water Leak Sensor is a waterproof water-only puck that relies on the hub.

Does the Sonoff Zigbee Water Leak Sensor need a hub?

Yes. It is a Zigbee device and needs a Zigbee hub, such as a SONOFF bridge, Home Assistant with a coordinator, Hubitat or Zigbee2MQTT. It has no Wi-Fi of its own.

Which one lasts longer on a battery?

The Sonoff Zigbee Water Leak Sensor, rated for about five years on a CR2477 against two years for the Fibaro Flood Sensor (HomeKit), though the Fibaro can also run on wired 12/24V power.

Who should buy the Fibaro Flood Sensor (HomeKit)?

An Apple Home household that wants water, temperature and tilt sensing, a local sound and light, and a compact puck within Bluetooth range of a HomeKit hub.

Who should buy the Sonoff Zigbee Water Leak Sensor?

A Zigbee home on Home Assistant, Hubitat or a SONOFF bridge that wants an inexpensive, IP67 leak sensor it can deploy in several spots with a long battery.

Full comparison table

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