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ThirdReality Smart Water Leak Sensor

ThirdReality

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ThirdReality Smart Water Leak Sensor, product photo
Image: ThirdReality

Does the ThirdReality Smart Water Leak Sensor work with HomeKit, Alexa, and Google Home?

The ThirdReality Smart Water Leak Sensor sounds a 120 dB alarm even when the internet is down.

It is a Zigbee sensor, and the two AAA batteries are included and rated for up to 3 years. It suits HomeKit, Google Home and Home Assistant users through an integration (a Matter bridge). SmartThings users reach it through an integration (Zigbee).

At a glance: works withHow this is decided: cited platform facts only
HomeKit
Yes[1]
Matter via Bridge, via integration
Google Home
Yes[1]
Matter via Bridge, via integration
Alexa
Unknown
Unknown
SmartThings
Yes[1]
Zigbee, via integration
Home Assistant
Yes[1][2]
Matter via Bridge, via integration; 1 other path

Key facts

ThirdReality Smart Water Leak Sensor facts

How facts are sourced: every cell cites its source below
FactValue
StatusCurrent[1]
List price$20.99[1] as of
TypeWater leak[1]
RadioZigbee[1]
Power2 AAA batteries (included)[1]
Hub neededZigbee hub required[1]

Integration paths

How the ThirdReality Smart Water Leak Sensor connects

2 pathsHow facts are sourced: every cell cites its source below
PathRequiresiLocaliFeatures lostPlatformsi
Matter via BridgeThirdReality Smart Bridge MZ1 (sold separately)[1]unknownunknown
ZigbeeHUBA Zigbee hub[1]unknownunknown
About these columns
Requires
Hardware the path needs beyond the device and a controller.
Local
Yes when control on this path keeps working with the internet down.
Platforms
The platforms that work with the device on this path: Native (out of the box), Via integration (needs an add-on) or Not supported.

Home Assistant and Homey

Ways to add the ThirdReality Smart Water Leak Sensor

3 routesHow facts are sourced: every cell cites its source below
PlatformLeveliIntegrationDetailsEvidenceLimitations
Home AssistantVia Zigbee/Z-Wave[4][5]zigbee2mqttZigbee
  • Works with Home Assistant: Certified[4][5]
Model namedNone stated
Home AssistantVia Matter bridge[1][2]matterMatter via Bridge
  • Quality: No score[1][2]
  • IoT class: Local Push[1][2]
  • Works with Home Assistant: Not certified[1][2]
Model namedLimited: Not every device behind a Matter bridge is guaranteed to work[1][2]
HomeyOfficial app (local)[3]com.thirdreality.appZigbee
  • App: Official[3]
  • Runs on: Homey Pro, Homey Cloud[3]
Model namedNone stated
About these columns
Level
How the device gets into the platform on this route. The headline is the best route: local before cloud, direct before bridged, core before community. The methodology page lists every level.

Cite this page

ThirdReality Smart Water Leak Sensor. Smart Home Canon. https://smarthomecanon.com/devices/thirdreality-smart-water-leak-sensor. Last checked 2026-10-20.

Sources

  1. [1]
    MFRthirdreality.com / Smart Water Leak Sensor - ThirdReality store
    Accessed Back to text
  2. [2]
    DOChome-assistant.io / Matter - Home Assistant
    Accessed Back to text
  3. [3]
    DOChomey.app / Homey App Store: Third Reality
    Accessed Back to text
  4. [4]
    DBzigbee2mqtt.io / Third Reality 3RWS18BZ control via MQTT | Zigbee2MQTT
    Accessed Back to text
  5. [5]
    DOChome-assistant.io / Third Reality - Home Assistant
    Accessed Back to text