Fibaro Flood Sensor (Z-Wave) vs Third Reality Water Leak Sensor

Updated September 2026

Data from Amazon and official Fibaro and Third Reality sites.

2026 verdict

Winner

$66.12$78.5316% OFF

Between these two Zigbee-and-Z-Wave hub-dependent sensors, the Fibaro Flood Sensor (Z-Wave) comes out on top, carrying a higher owner rating and packing in more onboard sensing, tilt detection and tamper alerts alongside water leak monitoring, plus an on-device alert light the Third Reality Water Leak Sensor skips. The Third Reality Water Leak Sensor pushes back hard on value, with a lower price, a longer rated battery life, and a broader integration list spanning Google Home, Alexa, and Apple HomeKit through its bridge accessory. Both sensors include a local alert sound for standalone notification. Choose the Fibaro Flood Sensor (Z-Wave) for the better-rated unit with tilt and tamper sensing built in, and pick the Third Reality Water Leak Sensor if price, battery longevity, and wider voice-assistant support matter more.

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Feature	Fibaro Flood Sensor (Z-Wave)	Third Reality Water Leak Sensor	Winner
Price	$66.12	$20.99	Third Reality Water Leak Sensor
Rating	4.3	4.0	Fibaro Flood Sensor (Z-Wave)
Battery Life	2 years	3 years	Third Reality Water Leak Sensor
Integrations	Samsung SmartThings, Home Assistant	Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant	Third Reality 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 Light	YES	NO	Fibaro Flood Sensor (Z-Wave)
Warranty	1 year	1 year	Tie
Weather Resistance	NO	NO	Tie
Connectivity	Z-Wave	Zigbee	Tie
On Device Alert Sound	YES	YES	Tie

Winner

Fibaro

Fibaro Flood Sensor (Z-Wave)

16% OFF

$66.12

$78.53

Buy on Amazon USA

+ Rating: 4.3
+ Sensors: Water Leak, Temperature, Tilt
+ Alerts: Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Tamper Alerts
- Price: $66.12 vs $20.99
- Battery Life: 2 years vs 3 years

Third Reality

Third Reality Water Leak Sensor

$20.99

Buy on Amazon USA

+ Price: $20.99
+ Battery Life: 3 years
+ Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant
- Rating: 4.0 vs 4.3
- Sensors: Water Leak vs Water Leak, Temperature, Tilt

Frequently Asked Questions

Which water leak sensor is better, the Fibaro Flood Sensor (Z-Wave) or the Third Reality Water Leak Sensor?

The Fibaro Flood Sensor (Z-Wave) wins overall with a higher owner rating and extra tilt and tamper sensing plus an on-device alert light. The Third Reality Water Leak Sensor answers with a lower price, longer battery life, and more integrations.

What is the biggest difference between the Fibaro Flood Sensor (Z-Wave) and the Third Reality Water Leak Sensor?

Onboard sensing depth versus price and integrations. The Fibaro Flood Sensor (Z-Wave) adds tilt detection and tamper alerts with an alert light, while the Third Reality Water Leak Sensor costs less, lasts longer on a battery, and reaches more platforms including Google Home, Alexa, and Apple HomeKit.

Which sensor has tamper detection and an alert light?

Only the Fibaro Flood Sensor (Z-Wave). It pairs tilt sensing with tamper alerts and adds an on-device alert light, while the Third Reality Water Leak Sensor has neither a tilt sensor nor a light indicator.

Which one lasts longer on a battery and costs less?

The Third Reality Water Leak Sensor wins both, with a longer rated battery life and a lower price than the Fibaro Flood Sensor (Z-Wave).

Who should buy the Fibaro Flood Sensor (Z-Wave)?

Buy it if you want the higher-rated sensor with tilt sensing, tamper alerts, and a visible alert light inside a Z-Wave or Home Assistant setup.

Who should buy the Third Reality Water Leak Sensor?

Choose it if you want a cheaper, longer-lasting Zigbee sensor with wider integration support across Google Home, Alexa, and Apple HomeKit.

Full comparison table

Compare all 32 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.