Updated July 2026
Data from Amazon and official Eufy and Fibaro sites.
2026 verdict
In 2026, the recommendation leans toward Fibaro Flood Sensor (Z-Wave) over eufy Security Flood & Freeze Sensor E20, driven by rating, integrations, and sensors.
Its clearest strengths are rating, integrations, and sensors, and it still looks stronger on alerts. eufy Security Flood & Freeze Sensor E20 remains a niche alternative if price, weather resistance, and battery life matter more than the rest of the comparison. That is why Fibaro Flood Sensor (Z-Wave) wins the verdict here.
Price alerts
Water Leak Sensor prices change while you decide
We check the price of every Water Leak Sensor in the catalog daily and email you the drops, whichever one you pick.
| Feature | eufy Security Flood & Freeze Sensor E20 | Fibaro Flood Sensor (Z-Wave) | Winner |
|---|---|---|---|
| Price | $39.99 | $66.12 | eufy Security Flood & Freeze Sensor E20 |
| Rating | 4.2 | 4.3 | Fibaro Flood Sensor (Z-Wave) |
| Weather Resistance | IP54 | NO | eufy Security Flood & Freeze Sensor E20 |
| Battery Life | 5 years | 2 years | eufy Security Flood & Freeze Sensor E20 |
| Integrations | Home Assistant | Samsung SmartThings, Home Assistant | Fibaro Flood Sensor (Z-Wave) |
| Sensors | Water Leak, Temperature | Water Leak, Temperature, Tilt | Fibaro Flood Sensor (Z-Wave) |
| Alerts | Water Leak Alerts, Freeze Temperature Alerts, Low Battery Alerts | Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts | Fibaro Flood Sensor (Z-Wave) |
| Connectivity | 2.4 GHz WiFi | Z-Wave | Tie |
| On Device Alert Sound | YES | YES | Tie |
| On Device Alert Light | YES | YES | Tie |
- + Price: $39.99
- + Weather Resistance: IP54
- + Battery Life: 5 years
- - Rating: 4.2 vs 4.3
- - Integrations: Home Assistant vs Samsung SmartThings, Home Assistant
Winner
16% OFF
$66.12
$78.53
- + Rating: 4.3
- + Integrations: Samsung SmartThings, Home Assistant
- + Sensors: Water Leak, Temperature, Tilt
- - Price: $66.12 vs $39.99
- - Weather Resistance: NO vs IP54
Frequently Asked Questions
Which is better overall: eufy Security Flood & Freeze Sensor E20 or Fibaro Flood Sensor (Z-Wave)?
Fibaro Flood Sensor (Z-Wave) has the stronger overall profile in this comparison, especially for rating, integrations, and sensors.
What is the biggest difference between eufy Security Flood & Freeze Sensor E20 and Fibaro Flood Sensor (Z-Wave)?
Price is one of the clearest differences: eufy Security Flood & Freeze Sensor E20 lists $39.99, while Fibaro Flood Sensor (Z-Wave) lists $66.12.
Which one looks better on price?
eufy Security Flood & Freeze Sensor E20 is listed at $39.99, while Fibaro Flood Sensor (Z-Wave) is listed at $66.12. eufy Security Flood & Freeze Sensor E20 (better spec).
Who should buy eufy Security Flood & Freeze Sensor E20?
Choose eufy Security Flood & Freeze Sensor E20 if your priority is price and weather resistance and that matters more than rating.
Who should buy Fibaro Flood Sensor (Z-Wave)?
Choose Fibaro Flood Sensor (Z-Wave) if your priority is rating and integrations and that matters more than price.
Full comparison table
Compare all 33 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.
- 33 Water Leak Sensors
- 36 specs compared
- 33 filters
ShellyFlood S Gen4
$27.99
YoLinkWater Leak Sensor 4
17% OFF$23.99$19.99
YoLinkWater Leak Sensor 1
10% OFF$16.99$15.29
X-SenseWi-Fi Water Leak Detector
$15.99
TP-LinkTapo T300
15% OFF$19.99$16.99
SwitchBotWater Leak Detector
$16.99
AeotecWater Leak Sensor
$39.99
EufyWater and Freeze Sensor
$34.99
EveWater Guard
$109.95
AqaraWater Leak Sensor T1
C$36.99
GoveeWater Leak Detector 2
$69.99
SwitchBotWater Leak Detector (Sensor Cable Edition)
10% OFF$19.99$17.99
FibaroFlood Sensor (Z-Wave)
16% OFF$78.53$66.12
SonoffZigbee Water Leak Sensor
$14.99
AqaraWater Leak Sensor
$18.99
GoveeWater Sensor Alarm
$15.99
ShellyFlood Gen4
$39.99- Eufy
Flood & Freeze Sensor E20
$39.99 
HeimanSmart Water Leakage Sensor
20% OFF$19.99$15.99
FibaroFlood Sensor (HomeKit)
$43.28
CamerasEufy4G Camera S230
4.0(197)$109.99
CamerasEufy4G LTE Cam S330
4.0(1,240)20% OFF$249.99$199.99
CamerasEufyCam S3 Pro
4.4(299)$219.99
CamerasEufyCam S330
4.3(961)32% OFF$219.99$149.99
CamerasEufyCam S4
4.2(461)$349.99
CamerasEufyIndoor Cam C120
4.3(589)$29.99
CamerasEufyIndoor Cam E220
4.4(21,448)9% OFF$54.99$49.99
CamerasEufyIndoor Cam E30
4.4(2,443)21% OFF$69.99$54.98
CamerasEufyOutdoor Cam E210
4.4(1,639)$59.99
CamerasEufyOutdoor Cam E220
4.2(2,043)$79.00
CamerasEufyPoE Bullet-PTZ Cam E50
$249.99
CamerasEufySoloCam E30
4.3(1,297)33% OFF$149.99$99.99
CamerasEufySoloCam E42
4.2(1,123)33% OFF$179.99$119.99
CamerasEufySoloCam S220
4.2(6,595)30% OFF$99.99$69.99
CamerasEufySoloCam S230
4.4(147)$129.99
CamerasEufySoloCam S340
4.2(6,871)30% OFF$199.99$139.99
CamerasEufyTrackLight Cam S1
$299.99
CamerasEufyWall Light Cam S4
3.9(17)$249.99
CamerasEufyWired Cam C31
4.3(741)23% OFF$59.99$45.99
DoorbellsEufyVideo Doorbell C31 (with Battery Pack)
4.0(830)$129.99
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)
4.6(522)
PlugsFibaroWall Plug with USB (US)
4.0(44)$51.28- Water Leak SensorsFibaro
Flood Sensor (Z-Wave)
4.3(233)16% OFF$78.53$66.12 - Water Leak SensorsFibaro
Flood Sensor (HomeKit)
4.1(359)$43.28