Back to all devices

ElectSmart PRO-900Z in Home Assistant

Thermostats & TRV · Zigbee · Thermostat for electric floor

Zigbee2MQTT Quirk proposed, not merged yet 2 open reports

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

Brand: ElectSmart
Model: PRO-900Z
Device type: Thermostats & TRV
Radio: Zigbee
Reports itself as: _TZE204_tagezcph
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.
add-on Zigbee2MQTT – Zigbee2MQTT runs as an add-on and passes the device on to Home Assistant over MQTT. Source

Known problems and fixes

Requests for ZHA support

support requested Someone asked ZHA to support this device or one of its functions. since 2026年1月11日 · zha-device-handlers #4645
support requested Someone asked ZHA to support this device or one of its functions. since 2025年12月5日 · zha-device-handlers #4551

Changes proposed for ZHA

pull request A change to ZHA for this device has been proposed and is waiting for review. since 2026年5月10日 · zha-device-handlers #4986
pull request A change to ZHA for this device has been proposed and is waiting for review. since 2026年2月9日 · zha-device-handlers #4744

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: Operation mode Min temperature Max temperature Low temperature protection High temperature protection Eco temperature Deadzone temperature Floor temperature Sensor Child lock +19

Source: zha-device-handlers · pull request #4986 · by @kaitlinsm · 2026年5月10日
Signature: _TZE204_tagezcph / TS0601

1 more quirk for this device

Quirk proposed, not merged yet _TZE204_tagezcph / TS0601 zha-device-handlers · pull request #4744 · by @MummyCH · 2026年2月9日

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 →