This is a client for dynamic DNS services, aimed at ESP (ESP32, etc) devices. Your node can use such a service to make its IP address known as a public DNS name, so you can find it, and use it from applications.
ESP32 espressif IoT development framework (esp-idf) compatible component for Sensirion SHT40, SHT41, SHT43, SHT45 temperature and humidity I2C sensors.