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Water Leak Sensors · Head to head

Meross Smart Multi-Function Water Leak Sensor vs Shelly Flood S Gen4

Full Smart Water Leak Sensors comparison in 2026

Updated November 2026
Data from the official Meross and Shelly sites.
2026 verdict
In this 2026 Meross Smart Multi-Function Water Leak Sensor vs Shelly Flood S Gen4 comparison, Meross Smart Multi-Function Water Leak Sensor comes out ahead thanks to price, battery life, and sensors.
Meross Smart Multi-Function Water Leak Sensor
Winner
Meross Smart Multi-Function Water Leak Sensor
$22.99
Buy on Official Store
It builds its lead on price, battery life, and sensors, then backs it up with a stronger showing on alerts. Shelly Flood S Gen4 still makes sense if warranty, weather resistance, and connectivity are your priority, but most buyers should still lean toward Meross Smart Multi-Function Water Leak Sensor. For the average buyer, Meross Smart Multi-Function Water Leak Sensor is the safer choice.
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The biggest differences

Where these two are furthest apart, and by how much.

  • Warranty3×Shelly Flood S Gen43 years vs 1 year
  • Battery Life2×Meross Smart Multi-Function Water Leak Sensor4 years vs 2 years
FeatureMeross Smart Multi-Function Water Leak SensorShelly Flood S Gen4Winner
Price$22.99$27.99Meross Smart Multi-Function Water Leak Sensor
Warranty1 year3 yearsShelly Flood S Gen4
Weather ResistanceIP66IP67Shelly Flood S Gen4
Battery Life4 years2 yearsMeross Smart Multi-Function Water Leak Sensor
ConnectivityBluetooth2.4 GHz WiFi, Bluetooth, ZigbeeShelly Flood S Gen4
SensorsWater Leak, TemperatureWater LeakMeross Smart Multi-Function Water Leak Sensor
AlertsWater Leak Alerts, Freeze Temperature AlertsWater Leak Alerts, Low Battery AlertsMeross Smart Multi-Function Water Leak Sensor
On Device Alert LightNOYESShelly Flood S Gen4
IntegrationsGoogle Home, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
On Device Alert SoundYESYESTie
Local ControlYESYESTie
Shelly

Shelly Flood S Gen4

Prime exclusive deal
$27.99
Buy on Amazon USA
  • + Warranty: 3 years
  • + Weather Resistance: IP67
  • + Connectivity: 2.4 GHz WiFi, Bluetooth, Zigbee
  • - Price: $27.99 vs $22.99
  • - Battery Life: 2 years vs 4 years

Frequently Asked Questions

Which is better overall: Meross Smart Multi-Function Water Leak Sensor or Shelly Flood S Gen4?

Meross Smart Multi-Function Water Leak Sensor has the stronger overall profile in this comparison, especially for price, battery life, and sensors.

What is the biggest difference between Meross Smart Multi-Function Water Leak Sensor and Shelly Flood S Gen4?

Price is one of the clearest differences: Meross Smart Multi-Function Water Leak Sensor lists $22.99, while Shelly Flood S Gen4 lists $27.99.

Which one looks better on price?

Meross Smart Multi-Function Water Leak Sensor is listed at $22.99, while Shelly Flood S Gen4 is listed at $27.99. Meross Smart Multi-Function Water Leak Sensor (better spec).

Who should buy Meross Smart Multi-Function Water Leak Sensor?

Choose Meross Smart Multi-Function Water Leak Sensor if your priority is price and battery life and that matters more than warranty.

Who should buy Shelly Flood S Gen4?

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

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Full comparison table

Compare all 34 Water Leak Sensors side by side

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  • 34 Water Leak Sensors
  • 37 specs compared
  • 34 filters
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