Who Knew Radiator Valves Had So Much Data? Here's How I Made Them Talk | HackerNoon
Briefly

The article details the installation and configuration of Netatmo smart radiator valves for remote temperature management via the Home Assistant platform. After a successful physical installation and app integration, the author faced challenges extracting the room's temperature data from the valves. The step-by-step guidance includes utilizing the Home Assistant Developer Tools to access valve attributes, creating a new sensor in the configuration.yaml file, and updating the area settings. This process culminates in a functional temperature sensor displayed on the dashboard, demonstrating the seamless integration of smart home devices and temperature control.
I recently acquired Netatmo smart radiator valves to manage my rooms' temperature remotely. I could easily replace the old thermo-static valves.
By default, the Netatmo valve displays a multi-valued state. You can use a filter to find the device in Developer Tools.
We must first extract them individually. For this, we need to create a sensor; head to File Editor and select configuration.yaml.
Finally, we can update the Spare Bedroom area in Settings > Area > Spare Bedroom. Set the temperature sensor to the only available item.
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