Here's an example for the GGreg20_V3, sending radiation levels right to your smartphone app using BLE (Bluetooth Low Energy)! This part dives into the first piece of the project: setting up the ESP32 as a BLE Server with the GGreg20_V3 as a sensor.

Read more:

https://iot-devices.com.ua/en/ggreg20-v3-ble-enabled-geiger-counter-esp32-esphome-part1/