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Water Leak Sensors · Head to head

Aeotec Water Leak Sensor vs Sonoff Zigbee Water Leak Sensor

Full Smart Water Leak Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Aeotec and Sonoff sites.
2026 verdict
Set on a pipe chase floor, the Sonoff Zigbee Water Leak Sensor is the water leak sensor to leave there when both options already need a Zigbee hub.
Sonoff Zigbee Water Leak Sensor
Winner
Sonoff Zigbee Water Leak Sensor
$14.99
Buy on Amazon USACheck price
It is the more affordable of the two, rated IP67, with a 5-year CR2477 battery and a wider set of apps, including Google Home. The Aeotec Water Leak Sensor is the better reviewed one and the only one with temperature and freeze alerts, but it is IP20 and rated for 1 year on a CR2. Neither has a siren. Pick the Sonoff for a sealed, long-life Zigbee puck, and the Aeotec when a freeze warning matters more than the seal.
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FeatureAeotec Water Leak SensorSonoff Zigbee Water Leak SensorWinner
Price$39.99$14.99Sonoff Zigbee Water Leak Sensor
Rating4.54.3Aeotec Water Leak Sensor
Weather ResistanceIP20IP67Sonoff Zigbee Water Leak Sensor
Battery Life1 year5 yearsSonoff Zigbee Water Leak Sensor
IntegrationsSamsung SmartThings, Home AssistantGoogle Home, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterSonoff Zigbee Water Leak Sensor
SensorsWater Leak, TemperatureWater LeakAeotec Water Leak Sensor
AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature AlertsWater Leak Alerts, Low Battery AlertsAeotec Water Leak Sensor
Warranty1 year1 yearTie
ConnectivityZigbeeZigbeeTie
On Device Alert SoundNONOTie
On Device Alert LightNONOTie

What the differences mean

Same radio, different seal

Both need a Zigbee hub. The Sonoff Zigbee Water Leak Sensor is IP67, so a pipe chase that sweats or floods is a fair place for it. The Aeotec Water Leak Sensor is IP20, which means the body is not sealed against water. It should sit beside the drip, not in it. That is the practical gap on a chase floor, not the radio.

Freeze alerts

The Aeotec Water Leak Sensor has a temperature sensor and both temperature and freeze alerts. The Sonoff Zigbee Water Leak Sensor has neither. A cold chase that has not yet dripped will only wake the Aeotec. Once water is on the floor, both can report the leak.

Battery

The Sonoff is rated for 5 years on a CR2477 and lists low-battery alerts. The Aeotec is rated for 1 year on a CR2, and a low-battery alert is not documented. The CR2477 is less common to keep in a drawer. The CR2 is what Aeotec owners already call out as pricey. Neither includes a sensor cable. The Sonoff leak feature notes an optional sensing cable that is not in the box.

Apps beyond the hub

Both list SmartThings and Home Assistant, and both list automations. The Sonoff also lists Google Home, and Apple Home plus Matter only with a SONOFF hub. The Aeotec lists none of Google Home, Apple Home or Matter. Owners on both sides report SmartThings friction, worse on the Sonoff, where the QR code often fails and the device has to be added by hand.

Which one to buy if

What owners say

Owners of the Aeotec Water Leak Sensor and owners of the Sonoff Zigbee Water Leak Sensor both talk about fast trips from a small amount of water and about pairing that is easy on Home Assistant. Aeotec Water Leak Sensor owners single out build quality and SmartThings setup, and they mention automations that close a valve. They complain about the IP20 body, the cost of CR2 cells, and Zigbee drops away from SmartThings or Home Assistant. Sonoff Zigbee Water Leak Sensor owners single out minute-or-two pairing with Home Assistant or Hubitat and a tool-free battery door. They complain that SmartThings often will not scan the QR code, and that a silent sensor means the hub has to do all the alerting.

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
  • Sonoff Zigbee Water Leak Sensor

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Frequently Asked Questions

Which is better on a pipe chase: the Aeotec Water Leak Sensor or the Sonoff Zigbee Water Leak Sensor?

The Sonoff Zigbee Water Leak Sensor for a wet chase: it is more affordable, IP67, and rated for 5 years. The Aeotec Water Leak Sensor if you need freeze alerts and prefer the better reviewed puck, knowing it is only IP20 and needs a new CR2 about once a year. Both need a Zigbee hub and neither has a siren.

Do both of these water leak sensors need a Zigbee hub?

Yes. The Aeotec Water Leak Sensor and the Sonoff Zigbee Water Leak Sensor both require a Zigbee hub. Neither joins Wi-Fi on its own.

Which one warns about freezing pipes?

The Aeotec Water Leak Sensor. It has temperature sensing plus temperature and freeze alerts. The Sonoff Zigbee Water Leak Sensor does not.

Does the Sonoff Zigbee Water Leak Sensor include a cable?

No. The included sensor cable is marked no. The leak feature mentions an optional sensing cable, which is not the same as one in the box. The Aeotec Water Leak Sensor does not include a cable either.

Who should buy the Aeotec Water Leak Sensor?

SmartThings or Home Assistant users who want freeze alerts on Zigbee and will place an IP20 sensor beside the leak, not in standing water.

Who should buy the Sonoff Zigbee Water Leak Sensor?

Buyers who want a sealed IP67 Zigbee sensor with a 5-year coin cell, Google Home as well as Home Assistant, and hub-side alerts because the puck itself is silent.

Full comparison table

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