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Bosch BTH-RA Thermostat

Bosch BTH-RA in Home Assistant

Thermostats & TRV · Zigbee · Radiator thermostat II

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-RA
Device type
Thermostats & TRV
Radio
Zigbee
Reports itself as
RBSH-TRV0-ZB-EU, RBSH-TRV1-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. Integration
  • official Bosch Smart Home Controller – paired with the Bosch Smart Home Controller, which the Bosch SHC integration connects to Home Assistant. 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 RBSH-TRV0-ZB-EU thermostat requires direct valve control support, which is not currently available in ZHA. since October 21, 2026 · zha-device-handlers #5504

Changes proposed for ZHA

  • pull request A pull request adds Zigbee2MQTT compatibility features for the Bosch Radiator Thermostat II. This would enhance integration with Zigbee2MQTT for advanced control options. since October 27, 2026 · zha-device-handlers #5557

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: Operating mode Valve adaptation status Boost heating Window open Remote temperature Calibrate valve Displayed temperature Display orientation Display on-time Display brightness +1

Source: zha-device-handlers · since zha-quirks 2.2.2
Signature: BOSCH / RBSH-TRV0-ZB-EU

5 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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