Aeotec Water Sensor 7 Pro vs Shelly Flood Gen4 comparison

Updated July 2026

Data from Amazon and official Aeotec and Shelly sites.

2026 verdict

The Shelly Flood Gen4 wins this water leak sensor comparison decisively, beating the Aeotec Water Sensor 7 Pro on price, a longer 3-year warranty, an IP44 weatherproof body, and far more connectivity. Where the Aeotec is Z-Wave only, the Gen4 supports WiFi, Zigbee, Bluetooth and Matter, so it slots into Home Assistant, Google Home, Alexa, HomeKit or SmartThings, and it adds a built-in buzzer and LED for local alerts the Aeotec lacks, plus an included extendable sensor cable. The Aeotec Water Sensor 7 Pro keeps one clear advantage, a longer roughly 3-year battery against the Gen4's 2 years on 4x AA cells, and both offer temperature and freeze alerts. Choose the Shelly Flood Gen4 for multi-protocol flexibility, an onboard alarm, and a cheaper price with a longer warranty; pick the Aeotec Water Sensor 7 Pro only if maximum battery life on a Z-Wave hub is the priority.

Feature	Aeotec Water Sensor 7 Pro	Shelly Flood Gen4	Winner
Price	$47.95	$39.99	Shelly Flood Gen4
Rating	4.1	4.2	Shelly Flood Gen4
Warranty	1 year	3 years	Shelly Flood Gen4
Weather Resistance	IP20	IP44	Shelly Flood Gen4
Battery Life	3 years	2 years	Aeotec Water Sensor 7 Pro
Connectivity	Z-Wave	2.4 GHz WiFi, Bluetooth, Zigbee	Shelly Flood Gen4
Integrations	Samsung SmartThings, Home Assistant	Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter	Shelly Flood Gen4
On Device Alert Sound	NO	YES	Shelly Flood Gen4
On Device Alert Light	NO	YES	Shelly Flood Gen4
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

Aeotec

Aeotec Water Sensor 7 Pro

$47.95

Buy on Amazon USA

+ Battery Life: 3 years
- Price: $47.95 vs $39.99
- Rating: 4.1 vs 4.2

Winner

Shelly

Shelly Flood Gen4

$39.99

Buy on Amazon USA

+ Price: $39.99
+ Rating: 4.2
+ Warranty: 3 years
- Battery Life: 2 years vs 3 years

Frequently Asked Questions

Which is better overall: Aeotec Water Sensor 7 Pro or Shelly Flood Gen4?

The Shelly Flood Gen4 wins overall on price, a 3-year warranty, weatherproofing, multi-protocol connectivity (WiFi, Zigbee, Bluetooth and Matter), and an onboard buzzer and LED. The Aeotec Water Sensor 7 Pro's main advantage is a longer battery life.

What is the biggest difference between these two sensors?

Connectivity. The Shelly Flood Gen4 supports WiFi, Zigbee, Bluetooth and Matter for almost any ecosystem, while the Aeotec Water Sensor 7 Pro is limited to Z-Wave with SmartThings and Home Assistant.

Which one works with more smart home platforms?

The Shelly Flood Gen4, which reaches Home Assistant, Google Home, Alexa, HomeKit and SmartThings across its protocols. The Aeotec Water Sensor 7 Pro sticks to SmartThings and Home Assistant over Z-Wave.

Which sensor lasts longer on a battery?

The Aeotec Water Sensor 7 Pro, rated for about 3 years, longer than the Shelly Flood Gen4's roughly 2 years on 4x AA cells.

Who should buy the Shelly Flood Gen4?

Buy it if you want a cheaper, multi-protocol sensor with an extendable cable, an onboard alarm, and support for WiFi, Zigbee, Bluetooth and Matter.

Who should buy the Aeotec Water Sensor 7 Pro?

Choose it if you run a Z-Wave hub and prioritize the longest battery life alongside freeze and temperature alerts and an included sensor cable.

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