Updated November 2026
Data from the official Aeotec and Fibaro sites.
2026 verdict
HomeKit or SmartThings? For an Apple Home, the Fibaro Flood Sensor (HomeKit) is the stronger water leak sensor, with its own siren and light, tilt and tamper alerts and about twice the battery life.
It is rated for about 2 years on a CR123A against 1 year, and can also run from an optional 12/24V DC supply. The Aeotec Water Leak Sensor is the cheaper and better reviewed of the two and the one for SmartThings: a Zigbee sensor with the same leak, temperature and freeze alerts, but no sound or light on the device and only an IP20 rating. Both work with Home Assistant, and neither with Google Home or Matter. Pick the Fibaro Flood Sensor (HomeKit) for Apple Home, and the Aeotec Water Leak Sensor for a SmartThings or Zigbee setup.
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Connectivity
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Winner
Price unavailable right now
Works with
Connectivity
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| Feature | Aeotec Water Leak Sensor | Fibaro Flood Sensor (HomeKit) | Winner |
|---|---|---|---|
| Rating | 4.5 | 4.1 | Aeotec Water Leak Sensor |
| Battery Life | 1 year | 2 years | Fibaro Flood Sensor (HomeKit) |
| Sensors | Water Leak, Temperature | Water Leak, Temperature, Tilt | Fibaro Flood Sensor (HomeKit) |
| Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts | Fibaro Flood Sensor (HomeKit) |
| On Device Alert Sound | NO | YES | Fibaro Flood Sensor (HomeKit) |
| On Device Alert Light | NO | YES | Fibaro Flood Sensor (HomeKit) |
| Warranty | 1 year | 1 year | Tie |
| Connectivity | Zigbee | Bluetooth | Tie |
| Integrations | Samsung SmartThings, Home Assistant | Apple HomeKit, Home Assistant | Tie |
| Local Control | YES | YES | Tie |
What the differences mean
Ecosystem
The Fibaro Flood Sensor (HomeKit) works natively in Apple Home over Bluetooth through an Apple TV, HomePod or iPad. The Aeotec Water Leak Sensor is a Zigbee device for SmartThings. Both work with Home Assistant, so for most buyers the platform you use decides it.
Local alarm
The Fibaro Flood Sensor (HomeKit) sounds and flashes on the device. The Aeotec Water Leak Sensor has no sound or light and relies on your hub to warn anyone nearby.
Tilt and tamper
Only the Fibaro Flood Sensor (HomeKit) has a tilt sensor and tamper alerts, so it reports being moved or opened.
Battery and power
The Fibaro Flood Sensor (HomeKit) is rated for about 2 years on a CR123A and can run on 12/24V DC with the battery as backup. The Aeotec Water Leak Sensor is rated for about 1 year on a CR2 cell.
Which one to buy if
- your home runs on Apple Home
The Fibaro Flood Sensor (HomeKit) works there natively; the Aeotec does not support Apple Home.
- your smart home is built on SmartThings
The Aeotec Water Leak Sensor works with SmartThings over Zigbee; the Fibaro does not.
- you want a siren at the sensor
The Fibaro Flood Sensor (HomeKit) sounds and flashes locally; the Aeotec is silent.
- you want several sensors on a budget
The Aeotec Water Leak Sensor is the cheaper of the two.
$39.99
- + Rating: 4.5
- - Battery Life: 1 year vs 2 years
- - Sensors: Water Leak, Temperature vs Water Leak, Temperature, Tilt
Winner
Price unavailable right now
- + Battery Life: 2 years
- + Sensors: Water Leak, Temperature, Tilt
- + Alerts: Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts
- - Rating: 4.1 vs 4.5
What owners say
Owners of both describe detection within seconds and value the temperature reading for freeze alerts. Aeotec Water Leak Sensor owners single out solid build quality, pairing with SmartThings or Home Assistant by pulling a tab and scanning a code, and automations that close a water shutoff valve, while they note the CR2 battery costs more to replace and some outside those two hubs saw Zigbee drops. Fibaro Flood Sensor (HomeKit) owners tell of real leaks caught early, fast Home app setup and the tilt and tamper sensor, but those in larger homes needed an extra Apple TV to keep it in Bluetooth range and several wish the alarm could be silenced remotely.
Frequently Asked Questions
Which is better overall: Aeotec Water Leak Sensor or Fibaro Flood Sensor (HomeKit)?
The Fibaro Flood Sensor (HomeKit), for its on-device siren and light, tilt and tamper alerts and longer battery life. The Aeotec Water Leak Sensor is cheaper, better reviewed and the right pick for SmartThings.
Does the Fibaro Flood Sensor (HomeKit) support Matter?
No. The Fibaro Flood Sensor (HomeKit) works with Apple Home over Bluetooth and with Home Assistant, but not with Matter, Google Home or SmartThings. The Aeotec Water Leak Sensor does not support Matter either.
Do both warn about freezing temperatures?
Yes. The Aeotec Water Leak Sensor and the Fibaro Flood Sensor (HomeKit) both have a temperature sensor with temperature and freeze alerts.
What hub does each one need?
The Aeotec Water Leak Sensor needs a Zigbee hub such as SmartThings or Home Assistant. The Fibaro Flood Sensor (HomeKit) needs an Apple Home hub in Bluetooth range, an Apple TV, HomePod or iPad.
Who should buy the Aeotec Water Leak Sensor?
SmartThings and Home Assistant users with a Zigbee hub who want a well-built leak and freeze sensor for under sinks and appliances, placed where it will not get splashed.
Who should buy the Fibaro Flood Sensor (HomeKit)?
Apple Home households who want a leak and freeze sensor with a local siren, tilt and tamper alerts and the option of wired DC power.
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