Water Leak Sensors · Head to head

Shelly Flood vs Third Reality Water Leak Sensor

Full Smart Water Leak Sensors comparison in 2026

Updated June 2026
Data from Amazon and official Shelly and Third Reality sites.
2026 verdict
In 2026, the recommendation leans toward Third Reality Water Leak Sensor over Shelly Flood, driven by price, rating, and battery life. It separates itself most clearly on price, rating, and battery life, while still looking better on on device alert sound. Shelly Flood remains a niche alternative if warranty, sensors, and alerts matters more than the rest of the comparison. That is why the final call still favors Third Reality Water Leak Sensor.
vs
FeatureShelly FloodThird Reality Water Leak SensorWinner
Price$24.99$20.99Third Reality Water Leak Sensor
Rating3.84.0Third Reality Water Leak Sensor
Warranty2 years1 yearShelly Flood
Battery Life1.5 years3 yearsThird Reality Water Leak Sensor
SensorsWater Leak, TemperatureWater LeakShelly Flood
AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature AlertsWater Leak Alerts, Low Battery AlertsShelly Flood
On Device Alert SoundNOYESThird Reality Water Leak Sensor
Weather ResistanceNONOTie
Connectivity2.4 GHz WiFiZigbeeTie
IntegrationsGoogle Home, Alexa, Samsung SmartThings, Home AssistantGoogle Home, Alexa, Apple HomeKit, Home AssistantTie
On Device Alert LightNONOTie

Frequently Asked Questions

Which is better overall: Shelly Flood or Third Reality Water Leak Sensor?

Third Reality Water Leak Sensor has the stronger overall profile in this comparison, especially for price, rating, and battery life.

What is the biggest difference between Shelly Flood and Third Reality Water Leak Sensor?

Price is one of the clearest differences: Shelly Flood lists $24.99, while Third Reality Water Leak Sensor lists $20.99.

Which one looks better on price?

Shelly Flood is listed at $24.99, while Third Reality Water Leak Sensor is listed at $20.99. Third Reality Water Leak Sensor (better spec).

Who should buy Shelly Flood?

Choose Shelly Flood if your priority is warranty and sensors and that matters more than price.

Who should buy Third Reality Water Leak Sensor?

Choose Third Reality Water Leak Sensor if your priority is price and rating and that matters more than warranty.

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