home-assistant.io/source/_components/binary_sensor.opentherm_gw.markdown

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The opentherm_gw binary sensor platform is used to expose internal data from the OpenTherm Gateway in Home Assistant.

{% linkable_title Configuration %}

Configuration of this platform is achieved through the OpenTherm Gateway Hub configuration.

The OpenTherm protocol is based on polling. The thermostat sends requests to the boiler at specific intervals. As a result, it may take some time for changes to propagate between Home Assistant and the thermostat.