Water Leak Sensors · Head to head

Aqara Water Leak Sensor T1 vs Tapo T300

Full Smart Water Leak Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Aqara and TP-Link sites.
2026 verdict
A louder alarm, longer battery life and a lower price make the Tapo T300 the better pick over the Aqara Water Leak Sensor T1.
Tapo T300
Winner
Tapo T300
$19.99

Last recorded price

Buy on Amazon USA
It is the better rated of the pair, sealed to IP67, and adds a 90 dB siren and an alert light on the unit, with about three years on two AAA cells and support for Google Home and partial Home Assistant through a Tapo Hub. The Aqara Water Leak Sensor T1 triggers at just 0.5 mm of water and reaches Apple Home, Google Home, SmartThings and Matter through an Aqara hub, but it is silent on the sensor and its alarm comes from the hub. Pick the Tapo for a loud, long-lasting spot sensor, the Aqara for an Apple Home or Matter home already running an Aqara hub.
vs
Winner
Tapo T300
TP-Link
#9 Best Seller in Water Leak Sensors

Tapo T300

Prime exclusive deal
$19.99
33% above its lowest price of the last 6 months ($14.99)
1% above its lowest price of the last 6 months (€16.90)

Last recorded price

Buy on Amazon USA
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FeatureAqara Water Leak Sensor T1Tapo T300Winner
Price€24.99$19.99Tapo T300
Rating4.44.6Tapo T300
Battery Life2 years3 yearsTapo T300
IntegrationsGoogle Home, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Home AssistantAqara Water Leak Sensor T1
On Device Alert SoundNOYESTapo T300
On Device Alert LightNOYESTapo T300
Warranty1 year1 yearTie
Weather ResistanceIP67IP67Tie
ConnectivityZigbeeOtherTie
SensorsWater LeakWater LeakTie
AlertsWater Leak Alerts, Low Battery AlertsWater Leak Alerts, Low Battery AlertsTie

What the differences mean

On-device alarm

The Tapo T300 has a 90 dB siren and an alert light on the unit, while the Aqara Water Leak Sensor T1 has neither and relies on the hub to sound the alarm. If the hub is across the house at night, only the Tapo warns you where the leak is.

Battery

The Tapo T300 is rated for about three years on two AAA cells, while the Aqara Water Leak Sensor T1 runs about two years on a single CR2032. The Tapo stretches longer between changes.

Platform

The Aqara Water Leak Sensor T1 reaches Apple Home, Google Home, SmartThings and Matter through an Aqara hub, plus Home Assistant. The Tapo T300 reaches Google Home and partial Home Assistant through a Tapo Hub and does not support Apple Home, SmartThings or Matter.

Trigger and sealing

The Aqara Water Leak Sensor T1 triggers when water reaches just 0.5 mm and is IP67 sealed. The Tapo T300 is also IP67 but its trigger depth is not documented, so on early detection the Aqara has the clearer claim.

Ecosystem

The Tapo T300 needs a Tapo Hub over Sub-1G, while the Aqara Water Leak Sensor T1 needs a Zigbee hub, and specifically an Aqara hub for the Apple Home, Google Home and Matter paths. Both are hub-bound, but the Aqara opens more platforms.

Which one to buy if

Winner
TP-Link

Tapo T300

Prime exclusive deal
$19.99

Last recorded price

Buy on Amazon USA
  • + Price: $19.99
  • + Rating: 4.6
  • + Battery Life: 3 years
  • - Integrations: Google Home, Home Assistant vs Google Home, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter

What owners say

Tapo T300 owners describe reliable operation once set up, with a loud 90 dB alarm and instant phone alerts that have caught leaks in progress. They praise the quick pairing in the Tapo app, the sensitivity to water from both the top and the bottom of the unit, and how well it works alongside other Tapo and Kasa devices. Their recurring complaint is the mandatory Tapo Hub, which several buyers did not realize was required, and a few outside the US hit a mismatch between the sensor and the hub sold in their region. Some also note the top drip sensor is a small target that can miss a light drip landing off center.

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.

  • Aqara Water Leak Sensor T1
  • Tapo T300

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Frequently Asked Questions

Which is better overall: Aqara Water Leak Sensor T1 or Tapo T300?

For most homes the Tapo T300, with a lower price, higher owner rating, a 90 dB alarm and light on the unit and about three years of battery life. The Aqara Water Leak Sensor T1 is the better fit when you run an Aqara hub and want Apple Home or Matter.

What is the biggest difference between the Aqara Water Leak Sensor T1 and the Tapo T300?

Alerting and where the alarm comes from. The Tapo T300 sounds a 90 dB siren and lights up on the unit, while the Aqara Water Leak Sensor T1 is silent and triggers the hub to alarm instead.

Do the Aqara Water Leak Sensor T1 and the Tapo T300 need a hub?

Yes, both need a hub. The Tapo T300 connects to a Tapo Hub over Sub-1G, and the Aqara Water Leak Sensor T1 connects over Zigbee, needing an Aqara hub for the Apple Home, Google Home and Matter paths.

Does the Tapo T300 work with Apple Home or Matter?

No. The Tapo T300 lists Google Home and partial Home Assistant but not Apple Home, SmartThings or Matter. The Aqara Water Leak Sensor T1 reaches Apple Home and Matter through an Aqara hub.

Who should buy the Aqara Water Leak Sensor T1, and who should buy the Tapo T300?

Buy the Aqara Water Leak Sensor T1 for an Aqara or Matter home that wants a tiny IP67 sensor triggering at 0.5 mm. Buy the Tapo T300 for a sealed spot sensor with a loud local alarm and longer battery life if you run or will add a Tapo Hub.

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