Joe TriesWater leak sensors
A leak sensor is a small puck you drop on the floor under a water heater, a washing machine, or a sink, and it alerts you the moment it gets wet. It is the cheapest device on the site with the most expensive thing to prevent. The spec people skip is whether it has a siren of its own, which is what wakes you when the phone is on silent.
- In the catalog
- 16
- Work without a hub
- 7 of 16
- Hub required
- 8
- Most common radios
- Wi-Fi, Zigbee, Z-Wave, Matter
- Price range
- $8 to $299
What decides compatibility
- A local siren matters. A push notification at 3am is not a smoke alarm.
- Most are Zigbee or Z-Wave and need a hub. Wi-Fi models exist and are usually pricier per unit.
- A probe cable extends the sensing point to the low spot under a heater or behind a washer, where water actually pools.
- Pair one with a smart shutoff valve if you want the leak stopped rather than reported.
How these connect to your system
A works-with badge does not say how the device gets there, and the path changes what you get. Direct means the maker built the integration and the device's own features tend to come with it. Via Matter means the standard controls work and anything unusual about the device may not carry over. Via a hub means you need a second box, usually the maker's own, before it works at all.
- Alexa10 work with itDirect 4Via Matter 1Via a hub 5
- SmartThings9 work with itDirect 6Via Matter 2Via a hub 1
- Google Home9 work with itDirect 4Via Matter 1Via a hub 4
- Home Assistant8 work with itVia Matter 2Via an add-on 6
- Hubitat5 work with itDirect 5
- Apple Home4 work with itDirect 1Via Matter 2Via a hub 1
See which ones work with your system
Water leak sensors we list
Filter and compare these in the catalog
AcuRite Hydro Sense - Smart Water Leak Detector with 3-foot Probe
AcuRite · Water leak sensor · Wi-Fi
No hub·
$25
Aeotec Water Sensor 7 Pro
Aeotec · Water leak sensor · Z-Wave
Hub requiredSmartThingsHome AssistantHubitat
$60
Aqara Water Leak Sensor
Aqara · Water leak sensor · Zigbee
Hub requiredSmartThingsAppleGoogleHome AssistantAlexa
$19
Govee Smart Water Detector with Hub
Govee · Water leak sensor · Wi-Fi
Hub requiredGoogleAlexa
$50
IKEA KLIPPBOK Water Leak Sensor (smart)
IKEA · Water leak sensor · Matter
Hub requiredSmartThingsAppleGoogleHome AssistantAlexa
$8
Meross Smart Water Leak Sensor Kit, MS405HHK
Meross · Water leak sensor · Wi-Fi
No hubSmartThingsAppleGoogleAlexa
$27
Phyn Smart Water Assistant
Phyn · Water leak sensor · Wi-Fi
No hubGoogleAlexa
$299
Shelly Flood Gen4
Shelly · Water leak sensor · Matter
No hubSmartThingsAppleGoogleHome AssistantAlexa
$40
SONOFF SNZB-05P Zigbee Water Leak Sensor
Sonoff · Water leak sensor · Zigbee
Hub requiredSmartThingsGoogleHome AssistantAlexaHubitat
$10
StreamLabs Scout
StreamLabs · Water leak sensor · Wi-Fi
No hub·
$129
Streamlabs Smart Home Water Monitor
StreamLabs · Water leak sensor · Wi-Fi
No hub·
$200
SwitchBot Water Leak Detector
SwitchBot · Water leak sensor · Bluetooth
Optional hubGoogleAlexa
$18
Third Reality Smart Water Leak Sensor WL2
ThirdReality · Water leak sensor · Zigbee
Hub requiredSmartThingsHome AssistantAlexaHubitat
$18
Third Reality Zigbee Water Leak Sensor
ThirdReality · Water leak sensor · Zigbee
Hub requiredSmartThingsHome AssistantHubitat
$21
X-Sense Smart Water Leak Detector
X-Sense · Water leak sensor · Wi-Fi
No hubGoogleAlexa
$20
Zooz Z-Wave Long Range XS Water Leak Sensor ZSE42
Zooz · Water leak sensor · Z-Wave
Hub requiredSmartThingsHome AssistantHubitat
$26