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Water Leak Sensors · Head to head

Eufy Water and Freeze Sensor vs SwitchBot Water Leak Detector

Full Smart Water Leak Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Eufy and SwitchBot sites.
2026 verdict
HomeKit over Wi-Fi and Bluetooth points to the SwitchBot Water Leak Detector as the water leak sensor with a local siren.
SwitchBot Water Leak Detector
Winner
SwitchBot Water Leak Detector
$16.99
Buy on Amazon USACheck price
It lists Google Home, Apple Home, SmartThings and Home Assistant, IP67, a sound and a light, and no extra hub. The Eufy Water and Freeze Sensor needs a HomeBase, lists freeze alerts and Home Assistant, and lists no siren on the sensor and no Apple Home. Neither includes a probe cable. Pick the SwitchBot Water Leak Detector to join the platforms you have. Pick the Eufy Water and Freeze Sensor when the HomeBase is already there and freeze alerts matter.
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FeatureEufy Water and Freeze SensorSwitchBot Water Leak DetectorWinner
Price$34.99$16.99SwitchBot Water Leak Detector
Rating4.54.4Eufy Water and Freeze Sensor
Weather ResistanceIP65IP67SwitchBot Water Leak Detector
Connectivity2.4 GHz WiFi2.4 GHz WiFi, BluetoothSwitchBot Water Leak Detector
IntegrationsHome AssistantGoogle Home, Apple HomeKit, Samsung SmartThings, Home AssistantSwitchBot Water Leak Detector
SensorsWater Leak, TemperatureWater LeakEufy Water and Freeze Sensor
AlertsWater Leak Alerts, Freeze Temperature AlertsWater Leak AlertsEufy Water and Freeze Sensor
On Device Alert SoundNOYESSwitchBot Water Leak Detector
On Device Alert LightNOYESSwitchBot Water Leak Detector
Warranty1 year1 yearTie
Battery Life2 years2 yearsTie

What the differences mean

HomeBase versus no hub

The Eufy Water and Freeze Sensor lists 2.4 GHz Wi-Fi with a HomeBase required. The SwitchBot Water Leak Detector lists 2.4 GHz Wi-Fi and Bluetooth and no extra hub. You do not add the Eufy sensor to a house that has no HomeBase. You do not need a HomeBase for the SwitchBot.

Siren versus freeze alerts

The SwitchBot Water Leak Detector lists a sound and a light, and its write-up cites about 100 dB, with contacts on the top and the bottom. It lists no temperature sensor and no freeze alerts. The Eufy Water and Freeze Sensor lists a temperature sensor and freeze alerts, and no sound or light on the sensor. The optional noise is on the HomeBase.

Platforms

The SwitchBot Water Leak Detector lists Google Home, Apple Home, SmartThings, Home Assistant and automations. Alexa and Matter are unsupported, even though the write-up mentions Alexa. The Eufy Water and Freeze Sensor lists Home Assistant only. Alexa, Google Home, Apple Home, SmartThings and Matter are unsupported. Automations on the Eufy are not documented. Neither includes a sensor cable.

Housing and cells

The SwitchBot Water Leak Detector is IP67, 29 x 32 x 78 mm and 109 g, about two years on two AAA cells. The Eufy Water and Freeze Sensor is IP65, 66 x 66 x 30 mm and 89 g, about two years on a CR123. Low-battery alerts are not documented on either. Warranties are one year on both.

Which one to buy if

What owners say

Owners of the Eufy Water and Freeze Sensor and the SwitchBot Water Leak Detector both mention a leak they would have missed, and both talk about pairing that is supposed to be a short QR step. Eufy Water and Freeze Sensor owners single out how easily it drops into an existing HomeBase and the freeze warning for a cold space, and they complain about the base alarm sharing a camera tone and about pairing or alert timing tied to the HomeBase schedule. SwitchBot Water Leak Detector owners single out hub-free Wi-Fi, sensitivity on a small puddle, and a price that makes several units reasonable, and they warn that with no cable the water has to hit the contacts, and that the siren may not carry to another room.

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.

  • Eufy Water and Freeze Sensor
  • SwitchBot Water Leak Detector

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Frequently Asked Questions

Which is better overall: Eufy Water and Freeze Sensor or SwitchBot Water Leak Detector?

The SwitchBot Water Leak Detector for a house that is not built around Eufy. It lists Wi-Fi, Bluetooth, a siren, Apple Home, Google Home, SmartThings and Home Assistant. The Eufy Water and Freeze Sensor is the HomeBase add-on with freeze alerts and no siren on the sensor.

What is the biggest difference between the Eufy Water and Freeze Sensor and the SwitchBot Water Leak Detector?

Hub and sensing. The Eufy Water and Freeze Sensor needs a HomeBase and lists freeze alerts. The SwitchBot Water Leak Detector needs no hub, lists a siren and IP67, and does not list temperature or freeze alerts.

Does the SwitchBot Water Leak Detector work with Apple Home?

Yes. The SwitchBot Water Leak Detector lists Apple Home, Google Home, SmartThings and Home Assistant. Alexa and Matter are not listed. The Eufy Water and Freeze Sensor lists Home Assistant only, not Apple Home.

Which one warns about freezing?

The Eufy Water and Freeze Sensor, which lists freeze-temperature alerts and a temperature sensor, but not general temperature alerts. The SwitchBot Water Leak Detector lists water-leak alerts only.

Who should buy the Eufy Water and Freeze Sensor?

People who already run a Eufy HomeBase and want leak and freeze monitoring at IP65, and who can live with the base alarm tone and no probe cable.

Who should buy the SwitchBot Water Leak Detector?

Buyers who want a hub-free Wi-Fi puck with a siren at the leak point, IP67, and Apple Home or Google Home, and who will place the body exactly where water will reach it.

Full comparison table

Compare all 34 Water Leak Sensors side by side

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