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Matter leak sensor on Home Assistant

For leak sensors, Home Assistant supports pairing, control and automation triggers. It does not support automation actions. Our confidence in this answer is High.

High confidence

2026-10-19 last checked

3/4 capabilities confirmed

At a glance

Answer	Home Assistant
Pairing	Y
Control	Y
Starts an automation	Y
Controlled by an automation	N
Confidence	High

Y = confirmed for this device type, Partial = works with limits, N = not supported by this platform, Unknown = not enough dated evidence. These are type-level answers, not a guarantee for one product.

What this means

All four answers are confirmed for this device type on this platform. Individual products can still implement less than the device type — check the product notes before you buy.

Requirements

Hub requirement: Home Assistant Matter Server (HA OS recommended). Thread border router for Thread devices.

Confidence

We have direct, dated evidence for most of these answers, including native hands-on reports where available.

Last checked 2026-10-19. Last change 2026-10-16. The answers above come from the published type matrix; the sources below are what they rest on.

Sources

kiwismarttech.co.nz · test · 2026-10-19
home-assistant.io · official · 2026-10-18
community.home-assistant.io · community · 2026-10-18
community.home-assistant.io · community · 2026-10-18
home-assistant.io · official · 2026-10-16
github.com · official · 2026-10-16

Frequently asked questions

Does Home Assistant support a Matter leak sensor?

Home Assistant pairs a Matter leak sensor and reports water detection; the row is High confidence, checked 2026-10-19. Home Assistant can control a Matter leak sensor from its app, including water-detection state (High, checked 2026-10-19).

Can a Matter leak sensor start a Home Assistant automation?

Yes — water detected by a Matter leak sensor can start a Home Assistant automation. As an action, Home Assistant cannot use a Matter leak sensor in an automation (High, checked 2026-10-19).

Do I need a hub for a Matter leak sensor on Home Assistant?

Home Assistant needs a Matter controller before a Matter leak sensor joins; keep the maker app for its alarm.

Next steps

All Home Assistant answers for leak sensors, side by side — the full leak sensor matrix across every platform.
Compare Home Assistant with another platform — pairing, control, triggers and actions in one table.
Check whether your setup will work — answer a few questions and get a verdict with caveats.
Matter products of this type — tested products with their own notes and sources.
Matter on Home Assistant: every device type
Leak sensor support guide
All platforms compared
How to check Matter certification
Matter firmware updates on each platform
How we check — evidence rules, confidence ratings and how often we re-check.

Other platforms for leak sensors

Apple Home — supports pairing, control and automation triggers Med
Google Home — supports pairing, control and automation triggers Med
Amazon Alexa — supports partial pairing Med
SmartThings — supports pairing, control and automation triggers High
Homey — supports pairing, control and automation triggers Med
Hubitat — no confirmed support Med

Informational only — verify before you buy. How we check · All leak sensors across platforms