If you have a controller with a GGreg20_V3 radiation detector module that periodically sends data to the ThingSpeak server, you can also easily connect it to your Home Assistant server as well. In this publication we will look at why this might be necessary and how to do it.

Full Article: https://iot-devices.com.ua/en/how-to-add-the-ggreg20-v3-thingspeak-channel-sensor-to-the-home-assistant-server/