Updated October 2026
Data from Amazon and official Centralite and Fibaro sites.
2026 verdict
Apple Home, not a Zigbee hub, is why the Fibaro Flood Sensor (HomeKit) is the water leak sensor with sound and tilt.
Winner
Fibaro Flood Sensor (HomeKit)Last recorded priceJan 1, 2026$43.28
Currently unavailable on Amazon USA
It lists Bluetooth for Apple Home, Home Assistant, a sound, a light, tamper alerts and optional wired power. The Centralite 3-Series Water Sensor is Zigbee, with SmartThings and Home Assistant, temperature and freeze alerts, and about three years on a CR2, and it has no siren. Matter is on neither sheet. Pick the Fibaro Flood Sensor (HomeKit) for Apple Home. Pick the Centralite 3-Series Water Sensor for a Zigbee puck that also watches freeze risk.
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Winner
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| Feature | Centralite 3-Series Water Sensor | Fibaro Flood Sensor (HomeKit) | Winner |
|---|---|---|---|
| Rating | 3.8 | 4.1 | Fibaro Flood Sensor (HomeKit) |
| Battery Life | 3 years | 2 years | Centralite 3-Series Water Sensor |
| Sensors | Water Leak, Temperature | Water Leak, Temperature, Tilt | Fibaro Flood Sensor (HomeKit) |
| Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery 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 |
What the differences mean
Zigbee versus Apple Home
The Centralite 3-Series Water Sensor needs a Zigbee hub and lists SmartThings and Home Assistant. It does not list Apple Home, Alexa, Google Home or Matter. The Fibaro Flood Sensor (HomeKit) lists Bluetooth with Apple Home required, plus Home Assistant, and it does not list Zigbee or Matter. A Centralite puck will not appear in Apple Home on its own.
Siren, tilt, tamper
The Fibaro Flood Sensor (HomeKit) lists a sound, a light, tilt sensing and tamper alerts. The Centralite 3-Series Water Sensor lists none of those. Both list water, temperature, temperature alerts and freeze alerts. Low-battery alerts are listed for Centralite and are not documented for Fibaro.
Power
The Centralite 3-Series Water Sensor quotes about three years on a CR2, and owners often report a shorter real life. The Fibaro Flood Sensor (HomeKit) quotes about two years on a CR123A and lists optional wired power. Neither includes a sensor cable. Weather resistance is not documented on either sheet.
Size on the sheet
Owners describe the Centralite 3-Series Water Sensor as matchbox-size and easy to tuck behind an appliance, listed at 1.49 x 2.34 x 0.85 in and 45 g. The Fibaro Flood Sensor (HomeKit) is the larger body, 71 x 71 x 29.3 mm and 59 g. Neither includes a sensor cable, so the puck itself has to sit in the water.
Which one to buy if
- your automations already live in Apple Home
The Fibaro Flood Sensor (HomeKit) lists Apple Home, a siren, a light, tilt and tamper. The Centralite does not list Apple Home.
- your controller is SmartThings or Zigbee2MQTT
The Centralite 3-Series Water Sensor is the Zigbee puck, with temperature and freeze alerts and low-battery alerts.
- you want a local siren on the leak sensor
Sound and light are listed on the Fibaro Flood Sensor (HomeKit) and not on the Centralite 3-Series Water Sensor.
- you can tolerate checking a CR2 and want the Zigbee path
The sheet quotes about three years, but Centralite owners are the group that complains the cell dies early.
$19.95
- + Battery Life: 3 years
- - Rating: 3.8 vs 4.1
- - Sensors: Water Leak, Temperature vs Water Leak, Temperature, Tilt
Winner
- + Rating: 4.1
- + Sensors: Water Leak, Temperature, Tilt
- + Alerts: Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts
- - Battery Life: 2 years vs 3 years
What owners say
Owners of the Centralite 3-Series Water Sensor and the Fibaro Flood Sensor (HomeKit) both credit a small sensor with catching a real leak, and both depend on a hub or a phone platform rather than a siren-only life. Centralite 3-Series Water Sensor owners single out fast SmartThings pairing, temperature and freeze alerts, and a matchbox-size body that tucks behind an appliance, and the repeated complaint is a CR2 that drained far sooner than the three-year claim, plus reconnects after a battery swap. Fibaro Flood Sensor (HomeKit) owners single out the compact body, temperature and tilt, and Apple Home pairing, and a few had a controller identify the device as the wrong type until it was configured again.
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.
- Centralite 3-Series Water Sensor
- Fibaro Flood Sensor (HomeKit)
Loading price history...
Frequently Asked Questions
Which is better overall: Centralite 3-Series Water Sensor or Fibaro Flood Sensor (HomeKit)?
The Fibaro Flood Sensor (HomeKit) for Apple Home, with a sound, a light, tilt and tamper. The Centralite 3-Series Water Sensor is the Zigbee sensor for SmartThings or Home Assistant, with freeze alerts and no siren.
Does the Fibaro Flood Sensor (HomeKit) support Matter?
No. Matter is unsupported on the Fibaro Flood Sensor (HomeKit). It does list Apple Home over Bluetooth and Home Assistant. The Centralite 3-Series Water Sensor is Zigbee, not Apple Home and not Matter.
What is the biggest difference between the Centralite 3-Series Water Sensor and the Fibaro Flood Sensor (HomeKit)?
The radio. Centralite needs a Zigbee hub. Fibaro joins Apple Home over Bluetooth and adds a siren, tilt and tamper. Both can report temperature and freeze risk. Weather ratings are not documented on either.
Which one works with SmartThings?
The Centralite 3-Series Water Sensor lists SmartThings. The Fibaro Flood Sensor (HomeKit) does not. It lists Apple Home and Home Assistant.
Who should buy the Centralite 3-Series Water Sensor?
Zigbee households, especially SmartThings, that want a small leak and freeze puck and will keep an eye on the CR2, because owners often see it drain early.
Who should buy the Fibaro Flood Sensor (HomeKit)?
Apple Home users who want leak, temperature, tilt and tamper sensing with a local sound and light, and optional wired power.
Full comparison table
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