18% OFF
$32.99
$39.99
Updated October 2026
Data from the official Eufy and Fibaro sites.
2026 verdict
For a home that runs on Apple Home, the Fibaro Flood Sensor (HomeKit) is the better water leak sensor of this pair, pairing over Bluetooth through an Apple TV, HomePod or iPad and adding temperature and tilt to leak detection.
It wins on integrations, on sensors and on alerts, and it carries the stronger owner record. The eufy Security Flood & Freeze Sensor E20 answers with the lower price, a five-year CR123A against two on the Fibaro, and its own 75 dB buzzer, LED and extension probe. The Fibaro Flood Sensor (HomeKit) can also take wired 12/24V power so the battery becomes a backup. Choose the Fibaro Flood Sensor (HomeKit) for an Apple Home setup that wants richer sensing, and the eufy Security Flood & Freeze Sensor E20 for a Eufy HomeBase home that wants a long-lived, cheaper disc.
Works with
Connectivity
- Wi-Fi 2.4 GHz
vs
Winner
Price unavailable right now
Works with
Connectivity
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| Feature | eufy Security Flood & Freeze Sensor E20 | Fibaro Flood Sensor (HomeKit) | Winner |
|---|---|---|---|
| Rating | 4.3 | 4.1 | eufy Security Flood & Freeze Sensor E20 |
| Battery Life | 5 years | 2 years | eufy Security Flood & Freeze Sensor E20 |
| Integrations | Home Assistant | Apple HomeKit, Home Assistant | Fibaro Flood Sensor (HomeKit) |
| Sensors | Water Leak, Temperature | Water Leak, Temperature, Tilt | Fibaro Flood Sensor (HomeKit) |
| Alerts | Water Leak Alerts, Freeze Temperature Alerts, Low Battery Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts | Fibaro Flood Sensor (HomeKit) |
| Connectivity | 2.4 GHz WiFi | Bluetooth | Tie |
| On Device Alert Sound | YES | YES | Tie |
| On Device Alert Light | YES | YES | Tie |
What the differences mean
How it connects
The Fibaro Flood Sensor (HomeKit) uses Bluetooth to a HomeKit hub, an Apple TV, HomePod or iPad, and needs no dedicated bridge. The eufy Security Flood & Freeze Sensor E20 talks sub-1G to a US Eufy HomeBase, which is the device that carries Wi-Fi and the phone alerts.
Sensing
The Fibaro Flood Sensor (HomeKit) covers water, temperature and tilt, with tamper alerts if the unit is moved. The eufy Security Flood & Freeze Sensor E20 detects water and freeze risk but has no tilt or tamper contact and does not report everyday temperature.
Battery and power
The eufy Security Flood & Freeze Sensor E20 runs up to five years on a CR123A. The Fibaro Flood Sensor (HomeKit) is rated for two years on its CR123A, but it can also be wired to a 12/24V DC supply so the battery serves only as backup.
Smart home support
The Fibaro Flood Sensor (HomeKit) is built for Apple Home and also works with Home Assistant. The eufy Security Flood & Freeze Sensor E20 reaches Home Assistant through a community integration and has no Apple Home, Google Home, SmartThings, Matter or Alexa leak path.
Local warning
Both make noise and light at the unit, and the eufy Security Flood & Freeze Sensor E20 adds a 1.2 m probe for tight spaces. The Fibaro Flood Sensor (HomeKit) counters with a tamper alert and a tilt sensor, though several owners note its alarm cannot be silenced remotely.
Which one to buy if
- your home is built on Apple Home
The Fibaro Flood Sensor (HomeKit) pairs natively over Bluetooth and needs no extra bridge beyond your HomeKit hub.
- you want temperature and tilt sensing as well
The Fibaro Flood Sensor (HomeKit) adds both to leak detection, along with tamper alerts if the puck is moved.
- you already own a Eufy HomeBase
The eufy Security Flood & Freeze Sensor E20 joins the app you already run, and its probe reaches under appliances.
- you want the longest battery life without wiring anything
Its CR123A is rated for five years, more than double the two years of the Fibaro Flood Sensor (HomeKit).
- the sensor will sit where power is available
The Fibaro Flood Sensor (HomeKit) can run on 12/24V DC, keeping the battery only for outages.
18% OFF
$32.99
$39.99
- + Rating: 4.3
- + Battery Life: 5 years
- - Integrations: Home Assistant vs Apple HomeKit, Home Assistant
- - Sensors: Water Leak, Temperature vs Water Leak, Temperature, Tilt
Winner
Price unavailable right now
- + Integrations: Apple HomeKit, Home Assistant
- + Sensors: Water Leak, Temperature, Tilt
- + Alerts: Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts
- - Rating: 4.1 vs 4.3
- - Battery Life: 2 years vs 5 years
What owners say
Owners of the Fibaro Flood Sensor (HomeKit) describe the same pattern: it catches a real leak, a failed sump pump or a slow drip, and the HomeKit notification along with the on-device sound and light fire quickly enough to act. The temperature sensor is called out as a useful bonus for freeze automations, and the tilt sensor is appreciated as a tamper warning if the unit is moved. Setup is usually described as fast, and several owners report the CR123A still reading near full after a year. The caveats are consistent too. Because it relies on Bluetooth, a large or concrete-heavy home may need an extra Apple TV as a repeater, and a few owners saw it drop offline. Some also note the alarm keeps sounding until the contacts dry, with no remote mute.
Frequently Asked Questions
Which is better overall: the eufy Security Flood & Freeze Sensor E20 or the Fibaro Flood Sensor (HomeKit)?
The Fibaro Flood Sensor (HomeKit), for an Apple Home household. It pairs natively, senses water, temperature and tilt, and carries the stronger owner record. The eufy Security Flood & Freeze Sensor E20 wins on price and battery life and suits anyone already on a Eufy HomeBase.
What is the biggest difference between the eufy Security Flood & Freeze Sensor E20 and the Fibaro Flood Sensor (HomeKit)?
The ecosystem each one lives in. The Fibaro Flood Sensor (HomeKit) pairs over Bluetooth through an Apple Home hub and needs no bridge, while the eufy Security Flood & Freeze Sensor E20 always needs a US Eufy HomeBase to work.
Does the Fibaro Flood Sensor (HomeKit) need a separate hub?
It needs an Apple Home hub, meaning an Apple TV, HomePod or iPad set up as a home hub, because it connects over Bluetooth. It does not need a dedicated Z-Wave or Zigbee bridge.
Which of these two has the longer battery life?
The eufy Security Flood & Freeze Sensor E20, at five years on a CR123A against two years for the Fibaro Flood Sensor (HomeKit), though the Fibaro can also be wired for power so its battery is only backup.
Who should buy the eufy Security Flood & Freeze Sensor E20?
A Eufy HomeBase household that wants a cheap, long-lasting leak and freeze disc with its own buzzer and a probe for the gaps under appliances.
Who should buy the Fibaro Flood Sensor (HomeKit)?
An Apple Home user who wants native HomeKit, temperature and tilt sensing and a compact puck, and who can keep it within Bluetooth range of a HomeKit hub.
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