Water Leak Sensors · Head to head

Aqara Water Leak Sensor T1 vs Shelly Flood

Full Smart Water Leak Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Aqara and Shelly sites.
2026 verdict
Where freeze warnings matter as much as the leak itself, the Shelly Flood is the better of these two water leak sensors, matching the Aqara Water Leak Sensor T1 on spotting water and adding temperature.
Shelly Flood
Winner
Shelly Flood

Last recorded priceFeb 6, 2026$24.99

Currently unavailable on Amazon USA
See on Amazon USA
It watches both hazards, warns when the room gets cold, and joins 2.4 GHz Wi-Fi on its own with no hub, backed by a two year warranty. The Aqara Water Leak Sensor T1 answers with an IP67 body that survives submersion, a trigger at just 0.5 mm of water, and more ways into a smart home, reaching HomeKit, Google Home and Matter through an Aqara hub and SmartThings and Home Assistant directly. Both are silent pucks, so the alert always comes from a hub or an app. Choose the Shelly Flood for a hub-free Wi-Fi home that wants freeze warnings, and the Aqara Water Leak Sensor T1 for a sealed, fast-triggering sensor in a Zigbee setup.
vs
Winner
Shelly Flood
Shelly

Shelly Flood

Prime exclusive deal
Lowest price of the last 6 months
10% above its lowest price of the last 6 months (€23.90)

Last recorded priceFeb 6, 2026$24.99

Currently unavailable on Amazon USA
See on Amazon USA
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FeatureAqara Water Leak Sensor T1Shelly FloodWinner
Rating4.43.8Aqara Water Leak Sensor T1
Warranty1 year2 yearsShelly Flood
Battery Life2 years1.5 yearsAqara Water Leak Sensor T1
IntegrationsGoogle Home, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Samsung SmartThings, Home AssistantAqara Water Leak Sensor T1
SensorsWater LeakWater Leak, TemperatureShelly Flood
AlertsWater Leak Alerts, Low Battery AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery AlertsShelly Flood
ConnectivityZigbee2.4 GHz WiFiTie
On Device Alert SoundNONOTie
On Device Alert LightNONOTie

What the differences mean

Freeze and temperature

The Shelly Flood watches temperature and sends freeze alerts as well as water alerts, so it can warn about a pipe at risk before a leak starts. The Aqara Water Leak Sensor T1 detects water only, with no temperature or freeze warnings.

Hub requirement

The Shelly Flood joins 2.4 GHz Wi-Fi on its own with no hub to buy. The Aqara Water Leak Sensor T1 needs a Zigbee hub, and an Aqara hub at that for its HomeKit, Google Home and Matter paths.

Sealing

The Aqara Water Leak Sensor T1 is rated IP67, which covers temporary immersion, so it keeps working after the leak it reported. The Shelly Flood's weather rating is not documented, so it is best kept out of standing water.

Battery

The Aqara Water Leak Sensor T1 runs about two years on a CR2032, and the Shelly Flood about one and a half years on a CR123A that is not included. The Aqara is the longer lasting and the easier cell to source.

Reach into ecosystems

The Aqara Water Leak Sensor T1 reaches HomeKit, Google Home and Matter through an Aqara hub, plus SmartThings and Home Assistant directly. The Shelly Flood works with Google Home, Samsung SmartThings and Home Assistant, with no Apple HomeKit or Matter.

Local alarm

Neither device sounds an alarm on its own, so both rely on a hub or an app to tell anyone that water has been found. That makes the hub you already own the deciding factor for alerts.

Which one to buy if

Aqara

Aqara Water Leak Sensor T1

Prime exclusive deal
€20.99

Last recorded price

Buy on Amazon Germany
  • + Rating: 4.4
  • + Battery Life: 2 years
  • + Integrations: Google Home, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
  • - Warranty: 1 year vs 2 years
  • - Sensors: Water Leak vs Water Leak, Temperature
Winner
Shelly

Shelly Flood

Prime exclusive deal

Last recorded priceFeb 6, 2026$24.99

Currently unavailable on Amazon USA
See on Amazon USA
  • + Warranty: 2 years
  • + Sensors: Water Leak, Temperature
  • + Alerts: Water Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery Alerts
  • - Rating: 3.8 vs 4.4
  • - Battery Life: 1.5 years vs 2 years

What owners say

Owners of the Shelly Flood single out the setup: placing the battery starts a local Wi-Fi access point you join from a phone browser, no app required, and once it is on the network Home Assistant picks it up automatically with both flood and temperature readings. Several describe running one near every water source because the unit is cheap enough to deploy in numbers, and they value that it doubles as a temperature sensor rather than only a leak alarm. The repeated complaint is Wi-Fi reliability, with a number of owners reporting a unit dropping off the network and needing a manual reconnect, and the initial pairing taking a few attempts. A few also note the CR123A cell is not in the box.

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
  • Shelly Flood

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Frequently Asked Questions

Which is better overall: Aqara Water Leak Sensor T1 or Shelly Flood?

It depends on the home. The Shelly Flood is the better pick for a hub-free Wi-Fi setup that wants freeze warnings, while the Aqara Water Leak Sensor T1 is the better pick for a Zigbee or Aqara house that values a sealed, fast-triggering puck and a wider ecosystem reach.

What is the biggest difference between the Aqara Water Leak Sensor T1 and the Shelly Flood?

The Shelly Flood watches temperature and warns about freezing as well as leaking, and connects over Wi-Fi with no hub. The Aqara Water Leak Sensor T1 detects water only and needs a Zigbee hub, but it is IP67 sealed and triggers at about 0.5 mm.

Does the Shelly Flood need a hub?

No. The Shelly Flood joins a 2.4 GHz Wi-Fi network on its own and reports to the Shelly app, with no bridge required. The Aqara Water Leak Sensor T1 does need a Zigbee hub.

Which one warns about freezing pipes, the Aqara Water Leak Sensor T1 or the Shelly Flood?

The Shelly Flood. It includes a temperature sensor and sends freeze alerts as well as water alerts, while the Aqara Water Leak Sensor T1 has no temperature or freeze sensing.

Who should buy the Aqara Water Leak Sensor T1?

A Zigbee or Aqara household that wants a compact, fully sealed, low-cost leak puck to tuck under appliances and is happy for the hub to handle alerts.

Who should buy the Shelly Flood?

A Wi-Fi home with no hub that wants a cheap leak and temperature sensor which Home Assistant or Google Home picks up, and that needs freeze warnings for pipes.

Full comparison table

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