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LeapMMW MTD085-ZB in Home Assistant

Motion & presence · Zigbee · Human presence sensor

Zigbee2MQTT Quirk proposed, not merged yet 1 open report

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

Brand: LeapMMW
Model: MTD085-ZB
Device type: Motion & presence
Radio: Zigbee
Reports itself as: _TZ321C_fkzihax8, _TZ321C_4slreunp
Zigbee2MQTT: Device page on zigbee2mqtt.io

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
add-on Zigbee2MQTT – Zigbee2MQTT runs as an add-on and passes the device on to Home Assistant over MQTT. Integration · Source

Known problems and fixes

Requests for ZHA support

support requested Someone asked ZHA to support this device or one of its functions. since September 23, 2024 · zha-device-handlers #3384

Changes proposed for ZHA

pull request A change to ZHA for this device has been proposed and is waiting for review. since October 23, 2025 · zha-device-handlers #4424

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.

Source: zha-device-handlers · pull request #4424 · by @fradaloisio · October 23, 2025
Signature: _TZ321C_fkzihax8 / TS0225

2 more quirks for this device

Quirk proposed, not merged yet _TZ321C_4slreunp / TS0225 zha-device-handlers · pull request #4424 · by @fradaloisio · October 23, 2025
Custom quirk shared in an issue _TZ321C_fkzihax8 / TS0225 zha-device-handlers · issue #3384 · by @chilloutman · December 18, 2025

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 →