Water Leak Sensors · Head to head

Shelly Flood Gen4 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
Shelly Flood Gen4 wins the 2026 matchup against Third Reality Water Leak Sensor, mainly on rating, warranty, and weather resistance. The comparison tilts its way because of rating, warranty, and weather resistance, with connectivity and integrations keeping it in front. You should still consider Third Reality Water Leak Sensor if price and battery life matters more than raw overall balance. In practical terms, Shelly Flood Gen4 is the easier product to recommend.
vs
FeatureShelly Flood Gen4Third Reality Water Leak SensorWinner
Price$39.99$20.99Third Reality Water Leak Sensor
Rating4.24.0Shelly Flood Gen4
Warranty3 years1 yearShelly Flood Gen4
Weather ResistanceIP44NOShelly Flood Gen4
Battery Life2 years3 yearsThird Reality Water Leak Sensor
Connectivity2.4 GHz WiFi, Bluetooth, ZigbeeZigbeeShelly Flood Gen4
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Home AssistantShelly Flood Gen4
SensorsWater Leak, TemperatureWater LeakShelly Flood Gen4
AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature AlertsWater Leak Alerts, Low Battery AlertsShelly Flood Gen4
On Device Alert LightYESNOShelly Flood Gen4
On Device Alert SoundYESYESTie

Frequently Asked Questions (FAQ)

Which is better overall: Shelly Flood Gen4 or Third Reality Water Leak Sensor?
Shelly Flood Gen4 has the stronger overall profile in this comparison, especially for rating, warranty, and weather resistance.
What is the biggest difference between Shelly Flood Gen4 and Third Reality Water Leak Sensor?
Price is one of the clearest differences: Shelly Flood Gen4 lists $39.99, while Third Reality Water Leak Sensor lists $20.99.
Which one looks better on price?
Shelly Flood Gen4 is listed at $39.99, while Third Reality Water Leak Sensor is listed at $20.99. Third Reality Water Leak Sensor (better spec).
Who should buy Shelly Flood Gen4?
Choose Shelly Flood Gen4 if your priority is rating and warranty 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 battery life and that matters more than rating.
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