Here they required installing a data logger which is really a Raspberry Pi running a web server + a USB to RS-485 adaptor. It was required for warranty beyond t

Here they required installing a data logger which is really a Raspberry Pi running a web server + a USB to RS-485 adaptor. It was required for warranty beyond the legal minimum because they want to monitor the environment temperature in the room where the inverter is installed. However it is not on the public network and does not call home.