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Water Leak Sensors · Head to head

Aeotec Water Leak Sensor vs YoLink Water Leak Sensor 4

Full Smart Water Leak Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Aeotec and YoLink sites.
2026 verdict
Near a water softener tank, the YoLink Water Leak Sensor 4 is the water leak sensor to put on the floor when the tank sits far from the router.
YoLink Water Leak Sensor 4
Winner
YoLink Water Leak Sensor 4
$17.09$23.9929% OFF
Buy on Amazon USACheck price
It uses LoRa to a YoLink hub, is IP66, sounds and lights on the device, and is rated for 5 years on AAA cells, and it is the more affordable, better reviewed of the two. The Aeotec Water Leak Sensor answers with full temperature alerts on Zigbee, SmartThings and Home Assistant, but it is IP20, silent, and rated for 1 year on a CR2. Pick the YoLink for range and a siren, and the Aeotec when Zigbee freeze alerts are the point.
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FeatureAeotec Water Leak SensorYoLink Water Leak Sensor 4Winner
Price$39.99$17.09YoLink Water Leak Sensor 4
Rating4.54.7YoLink Water Leak Sensor 4
Warranty1 year2 yearsYoLink Water Leak Sensor 4
Weather ResistanceIP20IP66YoLink Water Leak Sensor 4
Battery Life1 year5 yearsYoLink Water Leak Sensor 4
IntegrationsSamsung SmartThings, Home AssistantHome AssistantAeotec Water Leak Sensor
On Device Alert SoundNOYESYoLink Water Leak Sensor 4
On Device Alert LightNOYESYoLink Water Leak Sensor 4
ConnectivityZigbeeOtherTie
SensorsWater Leak, TemperatureWater Leak, TemperatureTie
AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery AlertsTie

What the differences mean

Zigbee mesh or LoRa range

The Aeotec Water Leak Sensor needs a Zigbee hub and lists SmartThings and Home Assistant. The YoLink Water Leak Sensor 4 needs a YoLink hub over LoRa and lists Home Assistant, not SmartThings, Google Home or Apple Home. Alexa is not listed either. A softener in a far corner is the case YoLink owners describe: the LoRa link reaches where Zigbee and Wi-Fi get thin. The Aeotec stays inside the Zigbee mesh you already trust.

Siren at the tank

The YoLink has an on-device sound and light. Its summary calls the siren 105 dB and says it fires even if the hub is offline. The Aeotec has neither sound nor light. A softener leak in a basement room will be audible on the YoLink and silent on the Aeotec until the phone buzzes.

Temperature

The Aeotec has a temperature sensor and both temperature and freeze alerts. The YoLink's temperature sensor is listed as low temperatures, with low-temperature alerts and freeze alerts, not a general temperature reading. Both can warn about a freeze. Only the Aeotec is listed as a full temperature sensor. Neither includes a sensor cable.

Seal, battery and warranty

The YoLink is IP66, rated for 5 years on two AAA cells, with low-battery alerts and a 2-year warranty. The Aeotec is IP20, rated for 1 year on a CR2, with a 1-year warranty, and a low-battery alert is not documented. Around a softener that can splash, the IP66 body is the one meant to get wet. The IP20 body should stay beside the spill.

Which one to buy if

What owners say

Owners of the Aeotec Water Leak Sensor praise a solid build, detection in seconds, and pairing with SmartThings or Home Assistant that can close a valve. They complain about an IP20 body, pricey CR2 cells, and Zigbee drops outside those hubs. Owners of the YoLink Water Leak Sensor 4 praise real saves at a water heater or a washer hose, a long LoRa reach into garages and outbuildings, and a 105 dB siren that still sounds if the hub link drops. They complain that the app is confusing at first and that there is no probe cable, so the body has to sit in the water's path. A separate YoLink hub is required before any of that works.

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
  • YoLink Water Leak Sensor 4

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Frequently Asked Questions

Which is better by a water softener: the Aeotec Water Leak Sensor or the YoLink Water Leak Sensor 4?

The YoLink Water Leak Sensor 4. It is more affordable, better reviewed, IP66, rated for 5 years, and it has a siren and a light over LoRa. The Aeotec Water Leak Sensor is the Zigbee choice with full temperature alerts and SmartThings, if you can keep an IP20 body dry and replace a CR2 about yearly.

Does the YoLink Water Leak Sensor 4 need a hub?

Yes, a YoLink hub. It has no Wi-Fi, Zigbee, Z-Wave, Thread or Matter radio of its own. The Aeotec Water Leak Sensor needs a Zigbee hub instead, and it lists SmartThings and Home Assistant.

Which one has a siren on the sensor?

The YoLink Water Leak Sensor 4. It lists an on-device sound and light, described as 105 dB in its review summary, including when the hub link is down. The Aeotec Water Leak Sensor has no on-device sound or light.

Do both warn about freezing?

Yes, in different ways. The Aeotec Water Leak Sensor has a temperature sensor plus temperature and freeze alerts. The YoLink Water Leak Sensor 4 lists low-temperature sensing and freeze alerts, not a general temperature reading.

Who should buy the Aeotec Water Leak Sensor?

Zigbee households on SmartThings or Home Assistant that want freeze and temperature alerts and valve automations, and that will place an IP20 sensor out of standing water.

Who should buy the YoLink Water Leak Sensor 4?

Homes with a far tank, garage or outbuilding who can add a YoLink hub and want a long-range IP66 sensor with a loud local siren and a 5-year AAA rating.

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