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Water Leak Sensors · Head to head

SwitchBot Water Leak Detector vs YoLink Water Leak Sensor 4

Full Smart Water Leak Sensors comparison in 2026

Updated October 2026
Data from Amazon and official SwitchBot and YoLink sites.
2026 verdict
Hub-free Wi-Fi against LoRa with freeze alerts: the YoLink Water Leak Sensor 4 comes out ahead, adding pipe freeze warnings, about 5 years per battery set and a 2-year warranty to its 105 dB siren.
YoLink Water Leak Sensor 4
Winner
YoLink Water Leak Sensor 4
$17.09$23.9929% OFF
Buy on Amazon USACheck price
It is also the better reviewed of the two and sends low battery alerts. The SwitchBot Water Leak Detector wins on reach and convenience: it joins Wi-Fi or Bluetooth with no hub, works with Google Home, Apple Home, SmartThings and Home Assistant, is sealed to IP67 and costs less, with a 100 dB alarm of its own. The YoLink needs a YoLink hub and stays with Home Assistant as its only outside platform. Choose the YoLink Water Leak Sensor 4 for freeze-prone spaces and large properties, and the SwitchBot Water Leak Detector for a quick, hub-free sensor that talks to your existing smart home.
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FeatureSwitchBot Water Leak DetectorYoLink Water Leak Sensor 4Winner
Price$16.99$17.09SwitchBot Water Leak Detector
Rating4.44.7YoLink Water Leak Sensor 4
Warranty1 year2 yearsYoLink Water Leak Sensor 4
Weather ResistanceIP67IP66SwitchBot Water Leak Detector
Battery Life2 years5 yearsYoLink Water Leak Sensor 4
Connectivity2.4 GHz WiFi, BluetoothOtherSwitchBot Water Leak Detector
IntegrationsGoogle Home, Apple HomeKit, Samsung SmartThings, Home AssistantHome AssistantSwitchBot Water Leak Detector
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 SoundYESYESTie
On Device Alert LightYESYESTie

What the differences mean

Freeze warnings

The YoLink Water Leak Sensor 4 senses low temperatures and warns before pipes freeze. The SwitchBot Water Leak Detector has no temperature sensor, so in an unheated space it only tells you once the pipe has already burst.

Hub and platforms

The SwitchBot Water Leak Detector connects over Wi-Fi or Bluetooth with no hub and works with Google Home, Apple Home, SmartThings and Home Assistant. The YoLink Water Leak Sensor 4 needs a YoLink hub and reaches only Home Assistant beyond its own app.

Battery life

The YoLink Water Leak Sensor 4 is rated for about 5 years on two AAA batteries with low battery alerts. The SwitchBot Water Leak Detector gets about 2 years from the same two AAA cells, and its low battery alerts are not documented.

Alarm

Both sound an alarm and flash on the sensor, 105 dB for the YoLink and 100 dB for the SwitchBot, a gap you would barely notice.

Which one to buy if

What owners say

Owners of both credit their sensor with a real save, a washer hose or a water heater, and call setup quick. YoLink Water Leak Sensor 4 owners single out long range across large properties, a siren that sounds even when the hub is offline and batteries that last for years, while some found the YoLink app's options confusing at first. SwitchBot Water Leak Detector owners praise unboxing to working in minutes with no hub and an alert that reached them while travelling, but found the Wi-Fi and HomeKit pairing fiddly, say the alarm is hard to hear from other rooms in a larger home and warn that water pooling just beside the unit can be missed.

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.

  • SwitchBot Water Leak Detector
  • YoLink Water Leak Sensor 4

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Frequently Asked Questions

Which is better overall: SwitchBot Water Leak Detector or YoLink Water Leak Sensor 4?

The YoLink Water Leak Sensor 4, for its freeze alerts, about 5 years of battery life, low battery alerts and 2-year warranty. The SwitchBot Water Leak Detector is cheaper, needs no hub and works with Google Home, Apple Home and SmartThings.

Does the YoLink Water Leak Sensor 4 need a hub?

Yes. The YoLink Water Leak Sensor 4 connects over LoRa to a YoLink hub and has no Wi-Fi of its own. The SwitchBot Water Leak Detector connects to Wi-Fi or Bluetooth directly.

Which one works with Apple Home and Google Home?

The SwitchBot Water Leak Detector works with Google Home, Apple Home, SmartThings and Home Assistant. The YoLink Water Leak Sensor 4 works with Home Assistant only. Neither supports Matter.

Do both have a siren?

Yes. The YoLink Water Leak Sensor 4 sounds 105 dB and the SwitchBot Water Leak Detector 100 dB, and both light up on the device.

Who should buy the SwitchBot Water Leak Detector?

Anyone who wants an affordable leak sensor with no hub that sends alerts to Google Home, Apple Home or SmartThings, placed right at a water heater or washer.

Who should buy the YoLink Water Leak Sensor 4?

Owners of larger homes, garages or cabins who want freeze warnings, a loud siren and years between battery changes, and do not mind adding a YoLink hub.

Full comparison table

Compare all 34 Water Leak Sensors side by side

You are looking at two of them. The full table lines up all Water Leak Sensors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.

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