Water Leak Sensors · Head to head

Shelly Flood S Gen4 vs Switchbot Water Leak Detector (Sensor Cable Edition)

Full Smart Water Leak Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Shelly and SwitchBot sites.
2026 verdict
Shelly Flood S Gen4 edges out Switchbot Water Leak Detector (Sensor Cable Edition) in 2026, led by rating, warranty, and connectivity.
Shelly Flood S Gen4
Winner
Shelly Flood S Gen4
$27.99

Last recorded price

Buy on Amazon USA
The main reason it wins is rating, warranty, and connectivity, and integrations strengthen that case. Pick Switchbot Water Leak Detector (Sensor Cable Edition) only when price is the deciding factor for your setup. That is enough to make Shelly Flood S Gen4 the better pick for most buyers.
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FeatureShelly Flood S Gen4Switchbot Water Leak Detector (Sensor Cable Edition)Winner
Price$27.99$19.99Switchbot Water Leak Detector (Sensor Cable Edition)
Rating4.64.3Shelly Flood S Gen4
Warranty3 years1 yearShelly Flood S Gen4
Connectivity2.4 GHz WiFi, Bluetooth, Zigbee2.4 GHz WiFi, BluetoothShelly Flood S Gen4
IntegrationsGoogle Home, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Apple HomeKit, Samsung SmartThings, Home AssistantShelly Flood S Gen4
Weather ResistanceIP67IP67Tie
Battery Life2 years2 yearsTie
SensorsWater LeakWater LeakTie
AlertsWater Leak Alerts, Low Battery AlertsWater Leak AlertsTie
On Device Alert SoundYESYESTie
On Device Alert LightYESYESTie

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Shelly Flood S Gen4
  • Switchbot Water Leak Detector (Sensor Cable Edition)

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Frequently Asked Questions

Which is better overall: Shelly Flood S Gen4 or Switchbot Water Leak Detector (Sensor Cable Edition)?

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

What is the biggest difference between Shelly Flood S Gen4 and Switchbot Water Leak Detector (Sensor Cable Edition)?

Price is one of the clearest differences: Shelly Flood S Gen4 lists $27.99, while Switchbot Water Leak Detector (Sensor Cable Edition) lists $19.99.

Which one looks better on price?

Shelly Flood S Gen4 is listed at $27.99, while Switchbot Water Leak Detector (Sensor Cable Edition) is listed at $19.99. Switchbot Water Leak Detector (Sensor Cable Edition) (better spec).

Who should buy Shelly Flood S Gen4?

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

Who should buy Switchbot Water Leak Detector (Sensor Cable Edition)?

Choose Switchbot Water Leak Detector (Sensor Cable Edition) if your priority is price and that matters more than rating.

Full comparison table

Compare all 34 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.

  • 34 Water Leak Sensors
  • 36 specs compared
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