Water Leak Sensors · Head to head

Shelly Flood vs SwitchBot Water Leak Detector

Full Smart Water Leak Sensors comparison in 2026

Updated October 2026
Data from Amazon and official Shelly and SwitchBot sites.
2026 verdict
If you want a leak to be heard as well as pushed to your phone, the SwitchBot Water Leak Detector is the better buy, with its own alarm and light and no hub to add.
SwitchBot Water Leak Detector
Winner
SwitchBot Water Leak Detector
$16.99

Last recorded price

Buy on Amazon USA
It connects over Wi-Fi or Bluetooth, carries an IP67 rating, runs about 2 years on two AAA batteries and works with Google Home, Apple Home, SmartThings and Home Assistant. The Shelly Flood is a silent Wi-Fi sensor, but it measures temperature, sends freeze and low battery alerts and comes with a 2-year warranty instead of one. Both skip Alexa and Matter. Choose the SwitchBot Water Leak Detector for an audible alarm and Apple Home support, and the Shelly Flood for a Home Assistant or Google Home setup that should also watch for freezing pipes.
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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FeatureShelly FloodSwitchBot Water Leak DetectorWinner
Rating3.84.4SwitchBot Water Leak Detector
Warranty2 years1 yearShelly Flood
Battery Life1.5 years2 yearsSwitchBot Water Leak Detector
Connectivity2.4 GHz WiFi2.4 GHz WiFi, BluetoothSwitchBot Water Leak Detector
IntegrationsGoogle Home, Samsung SmartThings, Home AssistantGoogle Home, Apple HomeKit, Samsung SmartThings, Home AssistantSwitchBot Water Leak Detector
SensorsWater Leak, TemperatureWater LeakShelly Flood
AlertsWater Leak Alerts, Temperature Alerts, Freeze Temperature Alerts, Low Battery AlertsWater Leak AlertsShelly Flood
On Device Alert SoundNOYESSwitchBot Water Leak Detector
On Device Alert LightNOYESSwitchBot Water Leak Detector

What the differences mean

Local alarm

The SwitchBot Water Leak Detector sounds an alarm and lights up on the unit. The Shelly Flood has neither, so a leak only reaches you through the app or your platform.

Temperature and freeze alerts

The Shelly Flood measures temperature and sends freeze alerts. The SwitchBot Water Leak Detector detects water only.

Platforms

Both work with Google Home, SmartThings and Home Assistant. Only the SwitchBot Water Leak Detector adds Apple Home.

Sealing and battery

The SwitchBot Water Leak Detector is IP67 and rated for 2 years on AAA cells. The Shelly Flood has no published rating and is rated for about 1.5 years on a CR123A that is not included.

Which one to buy if

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 both Wi-Fi sensors find them cheap enough to place near every water source. SwitchBot Water Leak Detector owners talk about setup done in minutes and real catches, one while they were away from home; their warnings are that the unit has to sit exactly where water arrives, since a puddle just outside the contacts went unnoticed, that HomeKit pairing can be fiddly, and that the alarm is hard to hear from other rooms in a large home. Shelly Flood owners single out setup from a phone browser with no app and Home Assistant picking up leak and temperature readings on its own, but several describe sensors dropping off Wi-Fi and needing to be reconnected, pairing that takes a few attempts, and a CR123A cell that 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.

  • Shelly Flood
  • SwitchBot Water Leak Detector

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Frequently Asked Questions

Which is better: Shelly Flood or SwitchBot Water Leak Detector?

The SwitchBot Water Leak Detector for most homes: it has an on-device alarm and light, IP67 sealing, longer battery life and Apple Home support. The Shelly Flood is the pick when you want temperature and freeze alerts in Home Assistant or Google Home.

Is the Shelly Flood any good?

Owners like its app-free browser setup and how Home Assistant picks it up automatically, and it adds temperature and freeze alerts. The recurring complaint is Wi-Fi reliability, with some units dropping off and needing to be reconnected, and it has no siren of its own.

Do the Shelly Flood and the SwitchBot Water Leak Detector need a hub?

No. Both connect over 2.4 GHz Wi-Fi, and the SwitchBot Water Leak Detector also has Bluetooth.

Which one works with Apple Home?

The SwitchBot Water Leak Detector. The Shelly Flood has no Apple Home support, and neither supports Matter.

Who should buy the Shelly Flood?

Home Assistant and Google Home users who want leak, temperature and freeze alerts from an inexpensive Wi-Fi sensor with a 2-year warranty.

Who should buy the SwitchBot Water Leak Detector?

Anyone who wants a hub-free, IP67 leak sensor with its own alarm that works with Apple Home, Google Home, SmartThings and Home Assistant.

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.

  • 34 Water Leak Sensors
  • 36 specs compared
  • 33 filters
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