Water Leak Sensors · Head to head

Shelly Flood vs Sonoff Zigbee Water Leak Sensor

Full Smart Water Leak Sensors comparison in 2026

Updated February 2026
Data from Amazon and official Shelly and Sonoff sites.
2026 verdict
Which water leak sensor handles more on its own: the WiFi-based Shelly Flood or the Zigbee-based Sonoff Zigbee Water Leak Sensor? The Sonoff Zigbee Water Leak Sensor edges ahead here with a lower price, a higher owner rating, weather resistance, a longer battery life, and a wider spread of integrations reaching Google Home, Alexa, SmartThings, Home Assistant and IFTTT once paired with a Zigbee hub. The Shelly Flood pushes back with a longer warranty and doubles as a temperature sensor with its own set of sensors and alerts, including freeze-temperature warnings the Sonoff lacks. Neither has an on-device alarm sound or light. Pick the Sonoff Zigbee Water Leak Sensor for the cheaper, better-rated, longer-lasting Zigbee sensor with broader platform reach; choose the Shelly Flood if temperature and freeze monitoring alongside leak detection matter more to you.
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FeatureShelly FloodSonoff Zigbee Water Leak SensorWinner
Price$24.99$14.99Sonoff Zigbee Water Leak Sensor
Rating3.84.3Sonoff Zigbee Water Leak Sensor
Warranty2 years1 yearShelly Flood
Weather ResistanceNOIP67Sonoff Zigbee Water Leak Sensor
Battery Life1.5 years5 yearsSonoff Zigbee Water Leak Sensor
IntegrationsGoogle Home, Alexa, Samsung SmartThings, Home AssistantGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterSonoff Zigbee Water Leak Sensor
SensorsWater Leak, TemperatureWater LeakShelly Flood
AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature AlertsWater Leak Alerts, Low Battery AlertsShelly Flood
Connectivity2.4 GHz WiFiZigbeeTie
On Device Alert SoundNONOTie
On Device Alert LightNONOTie

Frequently Asked Questions

Which is better overall: Shelly Flood or Sonoff Zigbee Water Leak Sensor?

The Sonoff Zigbee Water Leak Sensor wins overall on price, owner rating, weather resistance, battery life and integrations. The Shelly Flood counters with a longer warranty and extra temperature and freeze-alert sensing.

What is the biggest difference between the Shelly Flood and the Sonoff Zigbee Water Leak Sensor?

Radio protocol and sensor scope. The Shelly Flood connects over WiFi and doubles as a temperature and freeze sensor, while the Sonoff Zigbee Water Leak Sensor needs a Zigbee hub but reaches more platforms and lasts longer between charges.

Which one also tracks temperature and freeze risk?

The Shelly Flood. It includes a temperature sensor with both temperature and freeze-temperature alerts, a category the Sonoff Zigbee Water Leak Sensor does not cover.

Which one has the longer warranty?

The Shelly Flood carries the longer manufacturer warranty of the two.

Who should buy the Shelly Flood?

Buyers who want a WiFi sensor that also monitors temperature and freeze risk, and who value the longer warranty over Zigbee integrations.

Who should buy the Sonoff Zigbee Water Leak Sensor?

Buyers running a Zigbee hub who want the cheaper, better-rated, longer-lasting sensor with wider platform support.

Full comparison table

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