Winner
Updated October 2026
Data from Amazon and official Fibaro and Sonoff sites.
2026 verdict
More sensors and an alarm that sounds in the room tip this Z-Wave against Zigbee match to the Fibaro Flood Sensor (Z-Wave) over the Sonoff Zigbee Water Leak Sensor.
The Fibaro covers water, temperature and tilt with a sound and a light on the unit, plus tamper alerts, and it works with SmartThings and Home Assistant. The Sonoff Zigbee Water Leak Sensor answers on price, on battery life and on integrations: five years on a CR2477 against two for the Fibaro, and a path to Google Home, SmartThings and Home Assistant with Apple Home and Matter through a SONOFF bridge. The Sonoff is also IP67 where the Fibaro publishes no rating. Pick the Fibaro Flood Sensor (Z-Wave) for richer sensing on a Z-Wave hub, and the Sonoff Zigbee Water Leak Sensor for cheap, long-lasting coverage on Zigbee.
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| Feature | Fibaro Flood Sensor (Z-Wave) | Sonoff Zigbee Water Leak Sensor | Winner |
|---|---|---|---|
| Price | $61.32 | $14.99 | Sonoff Zigbee Water Leak Sensor |
| Battery Life | 2 years | 5 years | Sonoff Zigbee Water Leak Sensor |
| Integrations | Samsung SmartThings, Home Assistant | Google Home, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Sonoff Zigbee Water Leak Sensor |
| Sensors | Water Leak, Temperature, Tilt | Water Leak | Fibaro Flood Sensor (Z-Wave) |
| Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts | Water Leak Alerts, Low Battery Alerts | Fibaro Flood Sensor (Z-Wave) |
| On Device Alert Sound | YES | NO | Fibaro Flood Sensor (Z-Wave) |
| On Device Alert Light | YES | NO | Fibaro Flood Sensor (Z-Wave) |
| Rating | 4.3 | 4.3 | Tie |
| Warranty | 1 year | 1 year | Tie |
| Connectivity | Z-Wave | Zigbee | Tie |
What the differences mean
Sensing
The Fibaro Flood Sensor (Z-Wave) covers water, temperature and tilt and raises tamper alerts if it is moved. The Sonoff Zigbee Water Leak Sensor detects water only, with no temperature sensor, so it cannot warn about a pipe at risk of freezing.
Local alarm
The Fibaro Flood Sensor (Z-Wave) has both a sound and a light on the unit. The Sonoff Zigbee Water Leak Sensor has neither, so its warnings depend entirely on the hub, the app and the automations you build.
Hub
The Fibaro Flood Sensor (Z-Wave) needs a Z-Wave controller. The Sonoff Zigbee Water Leak Sensor needs a Zigbee hub, such as a SONOFF bridge, Home Assistant coordinator or Hubitat, so which protocol your smart home already speaks decides one of them.
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 (Z-Wave) supports SmartThings and Home Assistant.
Battery
The Sonoff Zigbee Water Leak Sensor is rated for about five years on a CR2477, against two years for the Fibaro Flood Sensor (Z-Wave) on its CR123A, though the Fibaro can also run on wired 12/24V power with the battery as backup.
Sealing
The Sonoff Zigbee Water Leak Sensor carries an IP67 rating and a gasket-sealed battery compartment. The Fibaro Flood Sensor (Z-Wave) publishes no weather-resistance rating, so it belongs somewhere that stays dry.
Which one to buy if
- you already run a Z-Wave hub or Home Assistant
The Fibaro Flood Sensor (Z-Wave) pairs in seconds and brings its temperature and tilt sensors along.
- you want the sensor to sound an alarm in the room
The Fibaro Flood Sensor (Z-Wave) has on-device sound and light, which the Sonoff Zigbee Water Leak Sensor lacks.
- you want the longest battery life and the lowest price
The Sonoff Zigbee Water Leak Sensor is the cheaper unit and rated for about five years on a CR2477.
- you want to trigger a water shutoff automatically
Owners pair the Sonoff Zigbee Water Leak Sensor with a Zigbee valve controller over Home Assistant.
- the spot is damp or can be splashed
Its IP67 housing and sealed battery door suit wet placement better than the unrated Fibaro Flood Sensor (Z-Wave).
Winner
- + Sensors: Water Leak, Temperature, Tilt
- + Alerts: Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts
- + On Device Alert Sound: YES
- - Price: $61.32 vs $14.99
- - Battery Life: 2 years vs 5 years
- + Price: $14.99
- + 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 painless pairing and alerts that land when water appears, but they are not solving the same problem. Sonoff Zigbee Water Leak Sensor owners are drawn by the price, which lets them place several, and they describe pairing in a minute on Home Assistant and Hubitat and automations that trip a shutoff valve. Their friction is SmartThings, where some had to work around an unscannable QR code, and the less common CR2477 cell. Fibaro Flood Sensor (Z-Wave) owners focus on the device itself: quick pairing on any Z-Wave controller, the temperature channel for freeze alerts and the tilt sensor with tamper warnings. Their minor complaints are an occasional misidentification by a hub and the missing probe cable.
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 (Z-Wave)
- Sonoff Zigbee Water Leak Sensor
Loading price history...
Frequently Asked Questions
Which is better overall: the Fibaro Flood Sensor (Z-Wave) or the Sonoff Zigbee Water Leak Sensor?
The Fibaro Flood Sensor (Z-Wave), for a home on Z-Wave 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 coverage.
What is the biggest difference between the Fibaro Flood Sensor (Z-Wave) and the Sonoff Zigbee Water Leak Sensor?
The radio and the sensing. The Fibaro Flood Sensor (Z-Wave) is a Z-Wave device that adds temperature and tilt and has an on-device alarm, while the Sonoff Zigbee Water Leak Sensor is a waterproof Zigbee puck that relies on the hub.
Does the Sonoff Zigbee Water Leak Sensor need a hub?
Yes. It needs a Zigbee hub such as a SONOFF bridge, Home Assistant with a coordinator, Hubitat or Zigbee2MQTT, and 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 (Z-Wave), though the Fibaro can also be wired for power.
Who should buy the Fibaro Flood Sensor (Z-Wave)?
A Z-Wave or Home Assistant household that wants a compact leak, temperature and tilt sensor with a local alarm and a well-regarded pairing record.
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 sensor with a five-year battery.
Full comparison table
Compare all 34 Water Leak Sensors side by side
You are looking at two of them. The full table lines up all Water Leak Sensors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 34 Water Leak Sensors
- 36 specs compared
- 33 filters
YoLinkWater Leak Sensor 4
29% OFF$23.99$17.09
YoLinkWater Leak Sensor 1
15% OFF$19.99$16.99
X-SenseWi-Fi Water Leak Detector
25% OFF
$15.99$11.99
TP-LinkTapo T300
$19.99
ShellyFlood S Gen4
$27.99
AeotecWater Leak Sensor
$39.99
EufyWater and Freeze Sensor
$34.99
EveWater Guard
32% OFF$109.95$74.95
GoveeWater Leak Detector 2
14% OFF$69.99$59.99
SwitchBotWater Leak Detector
$16.99
AqaraWater Leak Sensor T1
€20.99
SwitchBotWater Leak Detector (Sensor Cable Edition)
5% OFF$19.99$18.99- Fibaro
Flood Sensor (Z-Wave)
$61.32 
SonoffZigbee Water Leak Sensor
$14.99
AqaraWater Leak Sensor
$18.99
GoveeWater Sensor Alarm
$15.99
ShellyFlood Gen4
$39.99
EufyFlood & Freeze Sensor E20
25% OFF$39.99$29.99
HeimanSmart Water Leakage Sensor
15% OFF$19.99$16.99
FibaroFlood Sensor (HomeKit)
$43.28
Door & Window SensorsFibaroDoor / Window Sensor 2
3.6(58)$50.45
Door & Window SensorsFibaroDoor / Window Sensor
3.2(58)$48.53
HubsFibaroHome Center Lite
3.4(39)$149.00
Motion SensorsFibaroFGBHMS-001
3.5(192)$56.10
PlugsFibaroWall Plug (EU)
4.5(526)€41.26
PlugsFibaroWall Plug with USB (US)
4.0(44)$51.28- Water Leak SensorsFibaro
Flood Sensor (Z-Wave)
4.3(235)$61.32 - Water Leak SensorsFibaro
Flood Sensor (HomeKit)
4.1(359)$43.28
Air Quality MonitorsSonoffSAWF-07P Air Quality Monitor
3.7(193)$39.90
Air Quality MonitorsSonoffSAWF-08P Air Quality Monitor
4.3(169)$49.90
CamerasSonoffCAM GlassView
4.4(30)$34.90
CamerasSonoffCam Outdoor DUO
$79.90
CamerasSonoffCam Slim Gen2
4.4(176)$19.90
CamerasSonoffGK-200MP2-B
4.0(149)30% OFF$9.99$6.99
DisplaysSonoffNSPanel Pro Gen2
3.4(11)€149.90
DisplaysSonoffNSPanel Pro
4.1(75)$129.90
DonglesSonoffDongle Lite MG21
4.5(452)$24.90
DonglesSonoffDongle Max
4.3(603)18% OFF€38.99€32.13
DonglesSonoffDongle Plus MG24
4.7(690)$35.90
DonglesSonoffDongle Plus PP10
4.6(99)$35.90
DonglesSonoffDongle-PZG23
4.6(175)$39.90
DonglesSonoffZ-Wave 800 PoE Dongle Max
4.5(26)$44.90
DonglesSonoffZBDongle-E
4.7(3,743)$24.90
DonglesSonoffZBDongle-P
4.6(5,678)16% OFF$39.99$33.47
Door & Window SensorsSonoffDW2-WIFI
3.8(1,058)$12.23
Door & Window SensorsSonoffSNZB-04 ZigBee Wireless Door/Window Sensor
3.7(101)$17.99
Door & Window SensorsSonoffSNZB-04P ZigBee Door/Window Sensor
4.0(13)$18.99
Door & Window SensorsSonoffSenseGuard DW Gen2
4.4(203)£35.00