Water Leak Sensors · Head to head

Moen Smart Leak Detector vs Shelly Flood Gen4

Full Smart Water Leak Sensors comparison in 2026

Updated August 2026
Data from Amazon and official Moen and Shelly sites.
2026 verdict
For most buyers in 2026, Shelly Flood Gen4 is the safer pick over Moen Smart Leak Detector because of price, rating, and warranty. The main reason it wins is price, rating, and warranty, and connectivity and integrations strengthen that case. Choose Moen Smart Leak Detector only if weather resistance matters more to you than the broader advantage from Shelly Flood Gen4. That makes Shelly Flood Gen4 the clearer recommendation in 2026.
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FeatureMoen Smart Leak DetectorShelly Flood Gen4Winner
Price$54.87$39.99Shelly Flood Gen4
Rating3.34.3Shelly Flood Gen4
Warranty1 year3 yearsShelly Flood Gen4
Weather ResistanceIP67IP44Moen Smart Leak Detector
Connectivity2.4 GHz WiFi2.4 GHz WiFi, Bluetooth, ZigbeeShelly Flood Gen4
IntegrationsAlexa, Home AssistantGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterShelly Flood Gen4
Battery Life2 years2 yearsTie
SensorsWater Leak, TemperatureWater Leak, TemperatureTie
AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature AlertsTie
On Device Alert SoundYESYESTie
On Device Alert LightYESYESTie

Frequently Asked Questions

Which is better overall: Moen Smart Leak Detector or Shelly Flood Gen4?

Shelly Flood Gen4 has the stronger overall profile in this comparison, especially for price, rating, and warranty.

What is the biggest difference between Moen Smart Leak Detector and Shelly Flood Gen4?

Price is one of the clearest differences: Moen Smart Leak Detector lists $54.87, while Shelly Flood Gen4 lists $39.99.

Which one looks better on price?

Moen Smart Leak Detector is listed at $54.87, while Shelly Flood Gen4 is listed at $39.99. Shelly Flood Gen4 (better spec).

Who should buy Moen Smart Leak Detector?

Choose Moen Smart Leak Detector if your priority is weather resistance and that matters more than price.

Who should buy Shelly Flood Gen4?

Choose Shelly Flood Gen4 if your priority is price and rating and that matters more than weather resistance.

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