Aeotec Water Sensor 7 Pro vs Shelly Flood comparison

Updated June 2026

Data from Amazon and official Aeotec and Shelly sites.

2026 verdict

The Aeotec Water Sensor 7 Pro wins this water leak sensor comparison on reliability signals and longevity, carrying a higher owner rating, an IP20-rated body versus the unrated Shelly, and a much longer 3-year battery against the Shelly's roughly 1.5 years on a cell you have to buy separately. Both add temperature and freeze alerts. The Shelly Flood has its own case to make: it is more affordable, backed by a 2-year warranty, and reaches more integrations by connecting directly over WiFi to Google Home, Alexa, SmartThings and Home Assistant, no separate hub required, where the Aeotec needs a Z-Wave hub. Neither has an onboard siren. Choose the Aeotec Water Sensor 7 Pro for a higher-rated, longer-lasting sensor with a probe cable in a Z-Wave setup; pick the Shelly Flood for cheaper, hub-free WiFi leak and temperature detection across more platforms.

Feature	Aeotec Water Sensor 7 Pro	Shelly Flood	Winner
Price	$47.95	$24.99	Shelly Flood
Rating	4.1	3.8	Aeotec Water Sensor 7 Pro
Warranty	1 year	2 years	Shelly Flood
Weather Resistance	IP20	NO	Aeotec Water Sensor 7 Pro
Battery Life	3 years	1.5 years	Aeotec Water Sensor 7 Pro
Integrations	Samsung SmartThings, Home Assistant	Google Home, Alexa, Samsung SmartThings, Home Assistant	Shelly Flood
Connectivity	Z-Wave	2.4 GHz WiFi	Tie
Sensors	Water Leak, Temperature	Water Leak, Temperature	Tie
Alerts	Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts	Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts	Tie
On Device Alert Sound	NO	NO	Tie
On Device Alert Light	NO	NO	Tie

Winner

Aeotec

Aeotec Water Sensor 7 Pro

$47.95

Buy on Amazon USA

+ Rating: 4.1
+ Weather Resistance: IP20
+ Battery Life: 3 years
- Price: $47.95 vs $24.99
- Warranty: 1 year vs 2 years

Shelly

Shelly Flood

$24.99

Buy on Amazon USA

+ Price: $24.99
+ Warranty: 2 years
+ Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant
- Rating: 3.8 vs 4.1
- Weather Resistance: NO vs IP20

Frequently Asked Questions

Which is better overall: Aeotec Water Sensor 7 Pro or Shelly Flood?

The Aeotec Water Sensor 7 Pro wins overall on a higher rating, weather resistance, and a longer 3-year battery. The Shelly Flood is cheaper, carries a 2-year warranty, and connects directly over WiFi to Google Home, Alexa, SmartThings and Home Assistant.

What is the biggest difference between these two sensors?

Connectivity. The Shelly Flood is a hub-free WiFi sensor that works with Google Home, Alexa and SmartThings, while the Aeotec Water Sensor 7 Pro is a Z-Wave device that needs a hub but offers a longer battery and a sensor cable.

Does either sensor need a hub?

Only the Aeotec Water Sensor 7 Pro does, requiring a Z-Wave hub such as SmartThings or Home Assistant. The Shelly Flood connects directly to 2.4GHz WiFi with no separate hub.

Which one lasts longer on a battery?

The Aeotec Water Sensor 7 Pro, rated for about 3 years, roughly double the Shelly Flood's 1.5-year runtime on a CR123A cell that isn't included in the box.

Who should buy the Aeotec Water Sensor 7 Pro?

Buy it if you run a Z-Wave hub and want a higher-rated, longer-lasting sensor with freeze and temperature alerts and an included sensor cable.

Who should buy the Shelly Flood?

Choose it if you want a cheaper, hub-free WiFi sensor with a 2-year warranty that works with Google Home, Alexa, SmartThings and Home Assistant.

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