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Bosch BTH-RM230Z in Home Assistant

Thermostats & TRV · Zigbee · Room thermostat II 230V

Zigbee2MQTT Quirk included in ZHA 1 open report

This device is known to both Zigbee integrations: Zigbee2MQTT has a definition for it, and ZHA has a quirk that adapts it.

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

Facts about this device

Brand
Bosch
Model
BTH-RM230Z
Device type
Thermostats & TRV
Radio
Zigbee
Reports itself as
RBSH-RTH0-ZB-EU
Zigbee2MQTT
Device page on zigbee2mqtt.io

How the device gets into Home Assistant

  • official ZHA – with a Zigbee coordinator and the ZHA integration; the quirk the device needs is part of ZHA.
  • official Bosch Smart Home Controller – paired with the Bosch Smart Home Controller, which the Bosch SHC integration connects to Home Assistant.
  • 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 2023年11月5日 · zha-device-handlers #2707

Changes proposed for ZHA

  • pull request A change to ZHA for this device has been proposed and is waiting for review. since 2026年10月5日 · zha-device-handlers #5409
  • pull request A change to ZHA for this device has been proposed and is waiting for review. since 2026年10月5日 · zha-device-handlers #5407

ZHA quirks for this device

Quirk included in ZHA Recommended quirk

Part of ZHA – Home Assistant uses it on its own, nothing to install.

Adds: Heating demand Valve state Local temperature External temperature Operating mode Heater type Actuator type Sensor connection Temperature display mode Boost heating +8

Source: zha-device-handlers · since zha-quirks 2.2.2
Signature: Bosch / RBSH-RTH0-ZB-EU

3 more quirks for this device

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.

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.

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