Back to all devices

SONOFF Smart Door/Window Sensor in Home Assistant

Door & window · Matter, Thread, Zigbee

Matter Quirk proposed, not merged yet

Zigbee device – see the note above on what ZHA needs for it.

We have a detailed page on this device with compatibility ratings and prices. Details and compatibility

Brand: SONOFF
Model: Smart Door/Window Sensor
Device type: Door & window
Radio: Matter, Thread, Zigbee

How the device gets into Home Assistant

official ZHA – with a Zigbee coordinator and the ZHA integration; for all its functions it needs a custom quirk, see above. Integration
official Matter – certified for Matter; paired through the Matter integration of Home Assistant. (Matter 1.5, certified on August 7, 2026, needs a Thread border router) Integration · Source

Known problems and fixes

Changes proposed for ZHA

pull request A proposed addition to support the SONOFF SNZT-04P contact sensor, allowing Home Assistant to recognize and use it properly. since October 8, 2026 · zha-device-handlers #5419

ZHA quirks for this device

Quirk proposed, not merged yet Recommended quirk

Proposed to ZHA and waiting for review – the maintainers check it before it becomes part of Home Assistant.

Adds: Tamper

Source: zha-device-handlers · pull request #5419 · by @Oniums · October 8, 2026
Signature: SONOFF / SNZT-04P

The quirk is not part of ZHA yet. You can use it as a custom quirk until it is:

Tell ZHA where custom quirks are kept – in configuration.yaml:
```
zha:
  custom_quirks_path: /config/custom_zha_quirks/
```
Create that folder and save the quirk as a .py file in it.
Restart Home Assistant. If the device was paired before, reconfigure it or remove and pair it again so the quirk is applied.
Check it worked: the device page shows the quirk under Zigbee info.

A custom quirk has not been reviewed by the ZHA maintainers. Delete the file once the quirk is part of a Home Assistant release – otherwise the old copy takes precedence.

All quirks in the ZHA quirk database →

Alternatives

The same job from other makers – devices of the same type and radio that work with Home Assistant too.