Water Leak Sensors · Head to head

Meross Smart 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 Meross and YoLink sites.
2026 verdict
A lower price, a longer battery and a louder siren make the YoLink Water Leak Sensor 4 the pick over the Meross Smart Water Leak Sensor.
YoLink Water Leak Sensor 4
Winner
YoLink Water Leak Sensor 4
$17.09$23.9929% OFF

Last recorded price

Buy on Amazon USA
The YoLink Water Leak Sensor 4 runs about five years on two AAA cells, is IP66, and packs a 105 dB siren and a light plus low-temperature and freeze alerts. The Meross Smart Water Leak Sensor answers on ecosystem: it pairs with Apple HomeKit, Samsung SmartThings and Home Assistant through a Meross hub, is IP67, and is the smaller puck. The Meross Smart Water Leak Sensor is the one whose hub owners report dropping offline, which is worth weighing against its HomeKit appeal. Choose the YoLink Water Leak Sensor 4 for a longer-lived, louder sensor with freeze sensing, and the Meross Smart Water Leak Sensor for a HomeKit or SmartThings home that wants an affordable IP67 spot sensor.
vs
Winner
YoLink Water Leak Sensor 4
YoLink
#1 Best Seller in Water Leak Sensors

YoLink Water Leak Sensor 4

29% OFF
Prime exclusive deal
$17.09
$23.99
12% above its lowest price of the last 6 months ($15.29)

Last recorded price

Buy on Amazon USA

Also sold in packs

  • Pack of 39% OFF$49.99$54.99$16.66 per unitYou save $1.28Buy
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FeatureMeross Smart Water Leak SensorYoLink Water Leak Sensor 4Winner
Rating3.74.8YoLink Water Leak Sensor 4
Warranty1 year2 yearsYoLink Water Leak Sensor 4
Weather ResistanceIP67IP66Meross Smart Water Leak Sensor
Battery Life1.5 years5 yearsYoLink Water Leak Sensor 4
IntegrationsApple HomeKit, Samsung SmartThings, Home AssistantHome AssistantMeross Smart Water Leak Sensor
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
On Device Alert LightNOYESYoLink Water Leak Sensor 4
ConnectivityOtherOtherTie
On Device Alert SoundYESYESTie

What the differences mean

Hub and connection

The Meross Smart Water Leak Sensor needs a Meross Smart Wi-Fi Hub over Sub-1G. The YoLink Water Leak Sensor 4 needs a YoLink hub over LoRa. Neither has its own Wi-Fi.

Alarm and light

The YoLink Water Leak Sensor 4 has a 105 dB siren and a light. The Meross Smart Water Leak Sensor has an alarm around 60 dB and no light at all.

Sensing

The YoLink Water Leak Sensor 4 reports water and low temperatures with freeze alerts. The Meross Smart Water Leak Sensor detects water only.

Platforms

The Meross Smart Water Leak Sensor covers Apple HomeKit, SmartThings and Home Assistant. The YoLink Water Leak Sensor 4 covers Home Assistant but not HomeKit or SmartThings.

Battery and waterproofing

The YoLink Water Leak Sensor 4 is rated about five years on two AAA cells and IP66. The Meross Smart Water Leak Sensor is rated about 1.5 years on a CR123A and IP67, so it is tougher but shorter-lived.

Which one to buy if

Meross

Meross Smart Water Leak Sensor

Prime exclusive deal

Last recorded price$23.99

Currently unavailable on Amazon USA
See on Amazon USA
  • + Weather Resistance: IP67
  • + Integrations: Apple HomeKit, Samsung SmartThings, Home Assistant
  • - Rating: 3.7 vs 4.8
  • - Warranty: 1 year vs 2 years
Winner
YoLink

YoLink Water Leak Sensor 4

29% OFF
Prime exclusive deal
$17.09
$23.99

Last recorded price

Buy on Amazon USA
  • + Rating: 4.8
  • + Warranty: 2 years
  • + Battery Life: 5 years
  • - Weather Resistance: IP66 vs IP67
  • - Integrations: Home Assistant vs Apple HomeKit, Samsung SmartThings, Home Assistant

What owners say

YoLink Water Leak Sensor 4 owners talk about saves, from failing water heaters to burst washer hoses, and about the 105 dB siren that fires when the hub is down; roughly five years on two AAA cells and the long range are the other praises, while the app, the missing tamper alert and the absent cable are the complaints. Meross Smart Water Leak Sensor owners describe smooth hub pairing and sensors that appear right away in Apple Home, with real leaks caught early; the recurring problem they report is the Meross hub losing its connection and needing a manual restart, plus an on-device alarm around 60 dB that some find too quiet.

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.

  • Meross Smart Water Leak Sensor
  • YoLink Water Leak Sensor 4

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Frequently Asked Questions

Which is better overall: Meross Smart Water Leak Sensor or YoLink Water Leak Sensor 4?

The YoLink Water Leak Sensor 4 is better overall as a water leak sensor. It wins on price, rating, warranty, battery life, a wider sensor set and richer alert options. The Meross Smart Water Leak Sensor is the alternative when you want IP67 weather resistance and HomeKit or SmartThings support.

What is the biggest difference between the Meross Smart Water Leak Sensor and the YoLink Water Leak Sensor 4?

Freeze coverage and local warning. The YoLink Water Leak Sensor 4 alerts on low temperature as well as leaks and sounds a 105 dB siren, while the Meross Smart Water Leak Sensor is leak-only with an alarm around 60 dB and no light.

Does the Meross Smart Water Leak Sensor need a hub?

Yes, it pairs with a Meross Smart Wi-Fi Hub over Sub-1G rather than connecting to Wi-Fi directly. The YoLink Water Leak Sensor 4 also needs a hub, its own YoLink hub.

Which one works with HomeKit?

The Meross Smart Water Leak Sensor, which supports Apple HomeKit, SmartThings and Home Assistant. The YoLink Water Leak Sensor 4 works with Home Assistant but not HomeKit.

Who should buy the YoLink Water Leak Sensor 4?

Buy the YoLink Water Leak Sensor 4 if a five-year battery, a loud independent siren and freeze alerts matter more than platform breadth.

Who should buy the Meross Smart Water Leak Sensor?

Buy the Meross Smart Water Leak Sensor if you want an affordable IP67 sensor with Apple HomeKit, SmartThings or Home Assistant support, and can live with its quieter alarm.

Full comparison table

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