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Plugwise 170-01 in Home Assistant

Thermostats & TRV · Zigbee · Emma Wired Pro / Emma Wireless

Zigbee2MQTT Quirk proposed, not merged yet 1 open report

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

Brand: Plugwise
Model: 170-01
Device type: Thermostats & TRV
Radio: Zigbee
Power: Battery
Reports itself as: 170-01
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 The Plugwise Emma thermostat is not supported in ZHA, so it cannot be integrated with Home Assistant. No fix is proposed yet, but support is requested. since May 13, 2026 · zha-device-handlers #4996

Changes proposed for ZHA

pull request The Plugwise Emma thermostat is not supported in ZHA, making it unusable with Home Assistant. The proposed change would add support to enable thermostat control. since May 13, 2026 · zha-device-handlers #4997

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: Product code Product URL Identify Firmware version Intended boiler setpoint Boiler water temperature DHW temperature Return water temperature Application fault code OEM fault code +5

Source: zha-device-handlers · pull request #4997 · by @SaiPraveen22 · May 13, 2026
Signature: Plugwise / 170-01

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.

Aqara SRTS-A01 Thermostats & TRV · Zigbee · Smart radiator thermostat E1 Zigbee2MQTT ZHA quirk 1 open report Review · from 180.48 €
Zen Zen-01-W Thermostats & TRV · Zigbee · Thermostat Zigbee2MQTT ZHA quirk 1 open report Review
Alecto SMART-HEAT10 Thermostats & TRV · Zigbee · Radiator valve with thermostat Zigbee2MQTT ZHA quirk Review
Brennenstuhl HT CZ 01 Thermostats & TRV · Zigbee · Radiator thermostat Zigbee2MQTT ZHA quirk Review

Sources: Zigbee2MQTT, ZHA quirks, Z-Wave JS, the Matter certification database, Shelly, ESPHome, Tasmota, Tuya Local and the issue trackers on GitHub. Reports are assigned to a device by the identifiers they contain; the sentences come from the integration pages, where a language model writes them from the titles.