Aqara Water Leak Sensor vs Shelly Flood Gen4 comparison

Updated July 2026

Data from Amazon and official Aqara and Shelly sites.

2026 verdict

The Shelly Flood Gen4 outclasses the Aqara Water Leak Sensor across most of what matters, winning this water leak sensor comparison on a longer 3-year warranty, far wider connectivity (Wi-Fi, Bluetooth and Zigbee in one device), more integrations including Matter alongside Google Home, Alexa, HomeKit and SmartThings, extra temperature sensing with freeze alerts, and an onboard buzzer and LED the Aqara lacks. It even bundles a 2-meter extendable sensor cable. The Aqara Water Leak Sensor is not left empty-handed: it is cheaper and carries a stronger IP67 rating against the Gen4's IP44, and it stays tiny and discreet. Go with the Shelly Flood Gen4 for a multi-protocol, Matter-ready sensor with a local alarm and probe cable; pick the Aqara Water Leak Sensor if you mainly want a cheaper, more waterproof spot sensor for a Zigbee or HomeKit setup.

Feature	Aqara Water Leak Sensor	Shelly Flood Gen4	Winner
Price	$18.99	$39.99	Aqara Water Leak Sensor
Warranty	1 year	3 years	Shelly Flood Gen4
Weather Resistance	IP67	IP44	Aqara Water Leak Sensor
Connectivity	Zigbee	2.4 GHz WiFi, Bluetooth, Zigbee	Shelly Flood Gen4
Integrations	Apple HomeKit, Home Assistant, IFTTT	Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter	Shelly Flood Gen4
Sensors	Water Leak	Water Leak, Temperature	Shelly Flood Gen4
Alerts	Water Leak Alerts, Low Battery Alerts	Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts	Shelly Flood Gen4
On Device Alert Sound	NO	YES	Shelly Flood Gen4
On Device Alert Light	NO	YES	Shelly Flood Gen4
Rating	4.2	4.2	Tie
Battery Life	2 years	2 years	Tie

Aqara

Aqara Water Leak Sensor

$18.99

Buy on Amazon USA

+ Price: $18.99
+ Weather Resistance: IP67
- Warranty: 1 year vs 3 years
- Connectivity: Zigbee vs 2.4 GHz WiFi, Bluetooth, Zigbee

Winner

Shelly

Shelly Flood Gen4

$39.99

Buy on Amazon USA

+ Warranty: 3 years
+ Connectivity: 2.4 GHz WiFi, Bluetooth, Zigbee
+ Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- Price: $39.99 vs $18.99
- Weather Resistance: IP44 vs IP67

Frequently Asked Questions

Which is better overall: Aqara Water Leak Sensor or Shelly Flood Gen4?

The Shelly Flood Gen4 wins overall on a 3-year warranty, Wi-Fi, Bluetooth and Zigbee connectivity, Matter and broad integrations, temperature sensing, and an onboard buzzer and LED. The Aqara Water Leak Sensor is cheaper and more waterproof at IP67 versus IP44.

What is the biggest difference between these two sensors?

Protocol flexibility. The Shelly Flood Gen4 supports Wi-Fi, Bluetooth, Zigbee and Matter with a local alarm and a probe cable, while the Aqara Water Leak Sensor is a single-protocol Zigbee spot sensor that's cheaper and IP67-rated.

Which sensor supports Matter?

The Shelly Flood Gen4 supports Matter, plus Google Home, Alexa, HomeKit, SmartThings and Home Assistant. The Aqara Water Leak Sensor has no native Matter support, bridging only to HomeKit, IFTTT and Home Assistant through an Aqara Hub.

Which one is more water-resistant?

The Aqara Water Leak Sensor, rated IP67, is more waterproof than the Shelly Flood Gen4's IP44 rating, though the Gen4's included cable can reach spots the body should not sit in.

Who should buy the Shelly Flood Gen4?

Buy it if you want one sensor that speaks Wi-Fi, Bluetooth, Zigbee and Matter, includes a probe cable and a local alarm, and carries a 3-year warranty.

Who should buy the Aqara Water Leak Sensor?

Choose it for a cheaper, IP67-waterproof, discreet Zigbee spot sensor with HomeKit, IFTTT or Home Assistant support through an Aqara Hub.

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