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Water Leak Sensors · Head to head

Fibaro Flood Sensor (HomeKit) vs Tapo T300

Full Smart Water Leak Sensors comparison in 2026

Updated September 2026
Data from Amazon and official Fibaro and TP-Link sites.
2026 verdict
Puck sensors meant to sit beside a water heater, still the Tapo T300 is the one this comparison recommends.
Tapo T300
Winner
Tapo T300
$16.99$19.9915% OFF
Buy on Amazon USACheck price
It runs up to 3 years on two AAA cells through a Tapo Hub on Sub-1G, with an IP67 body, a local sound and light, low-battery alerts, Google Home and partial Home Assistant support. The Fibaro Flood Sensor (HomeKit) is the Apple-native alternative: Bluetooth into HomeKit, temperature, tilt and tamper alerts, a local sound and light, optional wired power, and a CR123A rated for 2 years, plus Home Assistant. It does not list Google Home, Alexa, SmartThings or Matter. Pick the Tapo T300 for a Tapo house and the longer battery rating. Pick the Fibaro Flood Sensor (HomeKit) when freeze, tilt and tamper alerts in Apple Home matter more.
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FeatureFibaro Flood Sensor (HomeKit)Tapo T300Winner
Price$43.28$16.99Tapo T300
Rating4.14.6Tapo T300
Battery Life2 years3 yearsTapo T300
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)
Warranty1 year1 yearTie
ConnectivityBluetoothOtherTie
IntegrationsApple HomeKit, Home AssistantGoogle Home, Home AssistantTie
On Device Alert SoundYESYESTie
On Device Alert LightYESYESTie

What the differences mean

Battery and the hub

The Tapo T300 is rated for 3 years on two AAA cells because it uses Sub-1G to a Tapo Hub instead of joining Wi-Fi itself. Low-battery alerts are supported. The Fibaro Flood Sensor (HomeKit) is rated for 2 years on a CR123A, with optional wired power, and it pairs over Bluetooth to an Apple home hub. Low-battery alerts are not documented on the Fibaro. Neither sensor is a standalone Wi-Fi puck.

Freeze, tilt and tamper

The Fibaro Flood Sensor (HomeKit) reads temperature, sends freeze and temperature alerts, and adds tilt and tamper. The Tapo T300 is leak-only: no temperature, no freeze alert, no tilt and no tamper. If a cold pipe is part of the worry, the Fibaro is doing a second job the Tapo does not. If the only job is water on the floor, that extra sensing is idle.

Platforms

The Fibaro Flood Sensor (HomeKit) supports Apple Home and Home Assistant. Google Home, Alexa, SmartThings and Matter are not supported. The Tapo T300 supports Google Home and partial Home Assistant, and it does not support Apple Home, Alexa, SmartThings or Matter. Apple versus Google is the clean split, with Home Assistant as the overlap, fully on the Fibaro and only partly on the Tapo.

Alarm and sealing

Both have an on-device sound and light, so a local alarm is not the difference. The Tapo T300 is IP67. Weather resistance on the Fibaro Flood Sensor (HomeKit) is not documented, so do not treat it as a sealed outdoor sensor. Neither includes a sensor cable. Both warranties are 1 year. Weight on the Tapo is not documented. The Fibaro is listed at 59 g.

Which one to buy if

Winner
TP-Link

Tapo T300

15% OFF
$16.99
$19.99
Buy on Amazon USACheck price
  • + Price: $16.99
  • + Rating: 4.6
  • + Battery Life: 3 years
  • - 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 talk about real leaks caught early, then split on what the extra sensing is worth. Fibaro Flood Sensor (HomeKit) owners describe HomeKit notifications and the on-device sound and light firing quickly, temperature used for freeze routines, and batteries still healthy after a year. They also say Bluetooth range depends on a nearby Apple TV, HomePod or iPad, that there is no way to silence the siren from afar, and that larger homes needed another Home hub. Tapo T300 owners, usually already in Tapo or Kasa, praise fast pairing, a loud alarm and months of staying connected near heaters, sinks and washers. Their complaints are the hub itself: some did not realize it was required, and a few outside the US hit a region mismatch between sensor and hub.

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)
  • Tapo T300

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Frequently Asked Questions

Which is better overall: Fibaro Flood Sensor (HomeKit) or Tapo T300?

The Tapo T300 as the longer-battery, IP67 leak alarm for a Tapo hub, with Google Home and a local sound and light. The Fibaro Flood Sensor (HomeKit) is the better Apple Home sensor because it adds temperature, freeze, tilt and tamper.

What is the biggest difference between the Fibaro Flood Sensor (HomeKit) and the Tapo T300?

Sensing and the ecosystem. The Fibaro is a Bluetooth HomeKit sensor with temperature, tilt, tamper and optional wired power, rated for 2 years. The Tapo is a Sub-1G sensor for a Tapo Hub, leak-only, IP67, rated for 3 years, with Google Home.

Does the Tapo T300 work without a hub the way the Fibaro Flood Sensor (HomeKit) works with Apple Home?

No. The Tapo T300 requires a Tapo Hub. The Fibaro Flood Sensor (HomeKit) does not use that hub. It uses Bluetooth to an Apple home hub such as an Apple TV, HomePod or iPad, which still has to be in range.

Do the Fibaro Flood Sensor (HomeKit) and the Tapo T300 both have a siren?

Yes. Both support an on-device sound and an on-device light. The difference is not the local alarm. It is temperature and tamper on the Fibaro, and the IP67 body plus the 3-year rating on the Tapo.

Who should buy the Fibaro Flood Sensor (HomeKit)?

Buy the Fibaro Flood Sensor (HomeKit) for Apple Home, Home Assistant, freeze alerts, tilt and tamper in a smaller home where Bluetooth can reach a Home hub.

Who should buy the Tapo T300?

Buy the Tapo T300 if a Tapo Hub is acceptable, you want Google Home, an IP67 body and a 3-year AAA rating, and you do not need temperature or Apple Home.

Full comparison table

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