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Water Leak Sensors · Head to head

Eve Water Guard vs YoLink Water Leak Sensor 4

Full Smart Water Leak Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Eve and YoLink sites.
2026 verdict
On battery life, sensing and range, the YoLink Water Leak Sensor 4 takes this matchup over the Eve Water Guard.
YoLink Water Leak Sensor 4
Winner
YoLink Water Leak Sensor 4
$17.09$23.9929% OFF
Buy on Amazon USACheck price
The YoLink Water Leak Sensor 4 runs about five years on two AAA cells, reports low temperatures and freeze risk, and carries a 105 dB siren that still fires when the hub is offline. The Eve Water Guard is the wired alternative: it needs wall power, but its 6.5 ft sensing cable extends to 490 ft and it offers native, account-free Apple HomeKit plus Home Assistant. The Eve Water Guard is also the only one of the two with a Thread radio, while the YoLink Water Leak Sensor 4 relies on a YoLink hub. Pick the YoLink Water Leak Sensor 4 for wide coverage and a loud local alarm across a property, and the Eve Water Guard for a HomeKit home that wants to trace one long run behind appliances.
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FeatureEve Water GuardYoLink Water Leak Sensor 4Winner
Price$74.95$17.09YoLink Water Leak Sensor 4
Rating4.54.7YoLink Water Leak Sensor 4
Warranty1 year2 yearsYoLink Water Leak Sensor 4
ConnectivityBluetooth, Thread ProtocolOtherEve Water Guard
IntegrationsApple HomeKit, Home AssistantHome AssistantEve Water Guard
SensorsWater LeakWater Leak, TemperatureYoLink Water Leak Sensor 4
AlertsWater Leak AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery AlertsYoLink Water Leak Sensor 4
Weather ResistanceYESIP66Tie
On Device Alert SoundYESYESTie
On Device Alert LightYESYESTie

What the differences mean

Power source

The Eve Water Guard is wired and needs a wall outlet, so placement is tied to power. The YoLink Water Leak Sensor 4 runs about five years on two AAA cells and can sit anywhere the radio reaches.

Sensing cable

The Eve Water Guard ships with a 6.5 ft sensing cable that extends to 490 ft, so one unit covers a long run. The YoLink Water Leak Sensor 4 has no cable and detects water only where it sits.

Freeze detection

The YoLink Water Leak Sensor 4 reports low temperatures and freeze alerts. The Eve Water Guard detects water only and has no temperature sensor.

Ecosystem

The Eve Water Guard is built for Apple HomeKit and Home Assistant and adds Thread, but not Alexa, Google Home, SmartThings or Matter. The YoLink Water Leak Sensor 4 supports Home Assistant but not HomeKit, Google Home or SmartThings either.

Local alarm

Both have an on-device siren and light, the Eve Water Guard at 100 dB and the YoLink Water Leak Sensor 4 at 105 dB. Neither depends on the phone to be heard.

Which one to buy if

What owners say

Both groups talk about a save. Eve Water Guard owners describe setup as scan-and-add with automations in the Home app, and several credit it with catching a failed toilet flapper or a washing machine drip, with the 6.5 ft cable singled out for covering a whole appliance run; they warn it is expensive, needs an outlet, and has no Alexa, Google Home or SmartThings support. YoLink Water Leak Sensor 4 owners praise the LoRa range, the 105 dB siren that fires without the hub, and roughly five years on two AAA cells, and many describe catching a failing water heater or washer hose; a few find the app confusing and note the missing tamper alert and cable.

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.

  • Eve Water Guard
  • YoLink Water Leak Sensor 4

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Frequently Asked Questions

Which is better overall: Eve Water Guard or YoLink Water Leak Sensor 4?

The YoLink Water Leak Sensor 4 wins overall on price, owner rating, warranty and battery life, with a loud independent siren and freeze alerts. The Eve Water Guard keeps a clear edge for HomeKit and Thread households, and its cable covers a whole appliance run.

What is the biggest difference between the Eve Water Guard and the YoLink Water Leak Sensor 4?

Range versus ecosystem. The YoLink Water Leak Sensor 4 uses long-range LoRa through a hub to reach garages and outbuildings, while the Eve Water Guard is a wired, HomeKit-and-Thread sensor whose sensing cable watches one long run.

Does the Eve Water Guard need batteries?

No. It is wired for power from a wall outlet, which limits placement. The YoLink Water Leak Sensor 4 is battery powered and rated around five years on two AAA cells.

Which one works with Apple HomeKit?

Only the Eve Water Guard, which integrates natively with Apple HomeKit and Home Assistant plus Thread. The YoLink Water Leak Sensor 4 supports Home Assistant but not HomeKit, Google Home or SmartThings.

Who should buy the Eve Water Guard?

Apple HomeKit or Thread households that want a wired sensor whose cable covers a full appliance run in one room, and who do not mind needing an outlet.

Who should buy the YoLink Water Leak Sensor 4?

Buyers who want a battery-powered, weather-resistant sensor with a loud independent siren, freeze alerts and long-range coverage across a large property.

Full comparison table

Compare all 34 Water Leak Sensors side by side

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