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Water Leak Sensors · Head to head

Aeotec Water Leak Sensor vs Tapo T300

Full Smart Water Leak Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Aeotec and TP-Link sites.
2026 verdict
Behind a Tapo hub on Sub-1G, the Tapo T300 is the water leak sensor with the local siren.
Tapo T300
Winner
Tapo T300
$19.99
Buy on Amazon USACheck price
It lists IP67, about three years on two AAA cells, a sound, a light, Google Home and partial Home Assistant support. The Aeotec Water Leak Sensor is Zigbee, IP20, about one year on a CR2, with temperature and freeze alerts for SmartThings and Home Assistant, and no siren. Neither includes a probe cable, and neither lists Apple Home or Matter. Pick the Tapo T300 if the hub is already Tapo. Pick the Aeotec Water Leak Sensor if the hub is Zigbee and freeze alerts matter.
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FeatureAeotec Water Leak SensorTapo T300Winner
Price$39.99$19.99Tapo T300
Rating4.54.6Tapo T300
Weather ResistanceIP20IP67Tapo T300
Battery Life1 year3 yearsTapo T300
SensorsWater Leak, TemperatureWater LeakAeotec Water Leak Sensor
AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature AlertsWater Leak Alerts, Low Battery AlertsAeotec Water Leak Sensor
On Device Alert SoundNOYESTapo T300
On Device Alert LightNOYESTapo T300
Warranty1 year1 yearTie
ConnectivityZigbeeOtherTie
IntegrationsSamsung SmartThings, Home AssistantGoogle Home, Home AssistantTie

What the differences mean

Hub radio

The Tapo T300 uses Sub-1G and needs a Tapo hub. It does not list Wi-Fi, Bluetooth, Zigbee, Z-Wave or Thread on the sensor. The Aeotec Water Leak Sensor needs a Zigbee hub and lists no other radio. A Tapo sensor will not join a Zigbee coordinator, and the Aeotec will not join a Tapo hub.

Siren and housing

The Tapo T300 lists a sound and a light, and its write-up cites about 90 dB, in an IP67 body. The Aeotec Water Leak Sensor lists neither sound nor light, and it is IP20, so the body itself is not protected against a soaking. Both detect water only where they sit. Neither includes a sensor cable.

Freeze alerts

The Aeotec Water Leak Sensor lists a temperature sensor, temperature alerts and freeze alerts. The Tapo T300 lists none of those. If the job is a cold pipe as well as a puddle, the Aeotec sheet is the one that says so.

Platforms and battery

The Tapo T300 lists Google Home and partial Home Assistant support, not Apple Home, SmartThings, Alexa or Matter, and about three years on two AAA cells with low-battery alerts. The Aeotec Water Leak Sensor lists SmartThings and Home Assistant, not Google Home, and about one year on a CR2. Its low-battery alert is not documented. Both list automations.

Which one to buy if

Winner
TP-Link

Tapo T300

Prime exclusive deal
$19.99
Buy on Amazon USACheck price
  • + Price: $19.99
  • + Rating: 4.6
  • + Weather Resistance: IP67
  • - Sensors: Water Leak vs Water Leak, Temperature
  • - Alerts: Water Leak Alerts, Low Battery Alerts vs Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts

What owners say

Owners of the Tapo T300 and the Aeotec Water Leak Sensor both describe a fast reaction under a sink or beside a washer, and both only after the right hub is already on the network. Tapo T300 owners single out a loud alarm, quick pairing in the Tapo app next to other Tapo or Kasa gear, and long runtime on the Sub-1G link, and they complain about discovering the hub requirement late and about hub and sensor region mismatches outside the US. Aeotec Water Leak Sensor owners single out a solid body, pairing by battery tab and QR code on SmartThings or Home Assistant, and freeze alerts, and they complain about IP20 placement limits and a CR2 that costs more to replace.

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
  • Tapo T300

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Frequently Asked Questions

Which is better overall: Aeotec Water Leak Sensor or Tapo T300?

The Tapo T300 if a Tapo hub is acceptable: IP67, a siren, a light and about three years on AAA cells. The Aeotec Water Leak Sensor is the Zigbee sensor, with temperature and freeze alerts for SmartThings and Home Assistant, and no local alarm.

What is the biggest difference between the Aeotec Water Leak Sensor and the Tapo T300?

The hub. The Aeotec Water Leak Sensor is Zigbee. The Tapo T300 is Sub-1G to a Tapo hub and adds a siren the Aeotec does not have. The Aeotec adds temperature and freeze alerts the Tapo does not list.

Does the Tapo T300 work without a hub?

No. The Tapo T300 lists a Tapo hub as required and does not list Wi-Fi on the sensor. The Aeotec Water Leak Sensor also needs a hub, a Zigbee one, and then lists SmartThings and Home Assistant.

Which one works with Apple Home?

Neither. Apple Home and Matter are unsupported on the Tapo T300 and on the Aeotec Water Leak Sensor. The Tapo lists Google Home and partial Home Assistant support. The Aeotec lists SmartThings and Home Assistant.

Who should buy the Tapo T300?

Tapo or Kasa households that can add the hub, want a loud local alarm and IP67, and do not need a temperature reading.

Who should buy the Aeotec Water Leak Sensor?

Zigbee households on SmartThings or Home Assistant that want freeze alerts in the same puck and can keep an IP20 body out of standing water.

Full comparison table

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