Water Leak Sensors · Head to head

Aeotec Water Leak Sensor vs Shelly Flood

Full Smart Water Leak Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Aeotec and Shelly sites.
2026 verdict
For a water leak sensor with no separate hub to buy, the Shelly Flood is the stronger pick against the Aeotec Water Leak Sensor, ahead on price, a longer warranty and longer battery life.
Shelly Flood
Winner
Shelly Flood

Last recorded priceFeb 6, 2026$24.99

Currently unavailable on Amazon USA
See on Amazon USA
It also wins on integrations, since it joins 2.4GHz Wi-Fi directly and reaches Google Home, Samsung SmartThings and Home Assistant without an added coordinator. The Aeotec Water Leak Sensor answers with the higher owner rating of the two, though it needs its own Zigbee hub to report anywhere, and once paired it reaches only SmartThings and Home Assistant, nothing more. Both double as temperature sensors with freeze-temperature alerts, and neither has an on-device siren. Buy the Shelly Flood if you want a cheaper Wi-Fi sensor with broader platform support and no extra hub to add; choose the Aeotec Water Leak Sensor if you already run a Zigbee mesh and value the better-reviewed, hub-connected option.
vs
Winner
Shelly Flood
Shelly

Shelly Flood

Prime exclusive deal
Lowest price of the last 6 months
10% above its lowest price of the last 6 months (€23.90)

Last recorded priceFeb 6, 2026$24.99

Currently unavailable on Amazon USA
See on Amazon USA
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FeatureAeotec Water Leak SensorShelly FloodWinner
Rating4.53.8Aeotec Water Leak Sensor
Warranty1 year2 yearsShelly Flood
Battery Life1 year1.5 yearsShelly Flood
IntegrationsSamsung SmartThings, Home AssistantGoogle Home, Samsung SmartThings, Home AssistantShelly Flood
ConnectivityZigbee2.4 GHz WiFiTie
SensorsWater Leak, TemperatureWater Leak, TemperatureTie
AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery AlertsTie
On Device Alert SoundNONOTie
On Device Alert LightNONOTie

What the differences mean

Warranty

Shelly backs the Flood for two years. Aeotec covers the Water Leak Sensor for one.

Battery life

The Shelly Flood is rated for about 1.5 years on a CR123A cell you have to supply yourself. The Aeotec Water Leak Sensor is rated for about a year on its own CR2 battery.

Whether a hub is required

The Aeotec Water Leak Sensor needs a Zigbee hub, such as a SmartThings or Home Assistant coordinator, before it reports anywhere. The Shelly Flood joins 2.4GHz Wi-Fi directly, with no separate hub to buy.

Which platforms each one reaches

The Shelly Flood connects to Google Home, Samsung SmartThings and Home Assistant. The Aeotec Water Leak Sensor, once its Zigbee hub is in place, reaches only SmartThings and Home Assistant, with no Google Home path at all.

Which one to buy if

Winner
Shelly

Shelly Flood

Prime exclusive deal

Last recorded priceFeb 6, 2026$24.99

Currently unavailable on Amazon USA
See on Amazon USA
  • + Warranty: 2 years
  • + Battery Life: 1.5 years
  • + Integrations: Google Home, Samsung SmartThings, Home Assistant
  • - Rating: 3.8 vs 4.5

What owners say

Aeotec Water Leak Sensor owners describe reliable, near-instant detection under sinks and washing machines, and several say pairing to a SmartThings or Home Assistant Zigbee hub took only a battery pull and a QR scan. Their frustration is less about the sensor itself and more about ecosystem gaps, there is no Alexa, Google Home or Apple HomeKit path without a bridge, and a minority outside SmartThings or Home Assistant report the sensor occasionally dropping off the mesh and needing to rejoin. Shelly Flood owners like that the initial setup needs no app at all, just joining the Wi-Fi access point the battery start-up creates and configuring it from a phone browser, and that Home Assistant picks it up automatically once it is on the network. Their complaint is reliability of that same Wi-Fi link, a handful describe a sensor dropping offline and needing a manual reconnect, and the CR123A battery it needs is not included in the box.

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.

  • Aeotec Water Leak Sensor
  • Shelly Flood

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Frequently Asked Questions

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

The Shelly Flood wins overall on price, a longer warranty, longer battery life and wider integrations over Wi-Fi. The Aeotec Water Leak Sensor counters with a higher owner rating in a Zigbee package.

Is the Shelly Flood a good water leak sensor?

Owner reviews are broadly positive: it is inexpensive, needs no separate hub, and Home Assistant users report it getting picked up automatically once it joins Wi-Fi. Its main knock is that some units drop off Wi-Fi and need a manual reconnect.

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

Connectivity and platform breadth. The Shelly Flood connects directly over Wi-Fi to Google Home, Samsung SmartThings and Home Assistant with no hub, while the Aeotec Water Leak Sensor needs a Zigbee hub and reaches only SmartThings and Home Assistant.

Do both detect temperature and freezing?

Yes. Both the Shelly Flood and the Aeotec Water Leak Sensor include a temperature sensor and support temperature and freeze alerts alongside leak detection. Neither has an on-device alarm sound or light.

Who should buy the Shelly Flood?

Buy it if you want an affordable Wi-Fi sensor with a longer warranty and broad support for Google Home, SmartThings and Home Assistant without adding a hub.

Who should buy the Aeotec Water Leak Sensor?

Choose it if you run a Zigbee network for SmartThings or Home Assistant and prefer the higher-rated, hub-connected sensor with temperature and freeze alerts.

Full comparison table

Compare all 34 Water Leak Sensors side by side

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