RS485 transceiver module isolates power and data, solves loop problems - EDN
Isolated RS485 Transceiver Breaks Ground Loops | Analog Devices
Waveshare Isolated RS485 Can Hat (B) for Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero W/Zero WH,2-CH MCP2515 RS485 and 1-CH Can Built-in Multiple Protection Circuits,SPI Communication : Amazon.es: Informática