Activity › Forums › Questions & Troubleshooting › Hardware › Controllino Mini UART › Reply To: Controllino Mini UART Jarda Member March 9, 2020 at 12:29 pm Hello, no, CONTROLLINO UART is not insulated. It is connected to the processor only with serial resistance and EMC protection circuits. Please use some RS422 driver, it is the best way. Regards Jarda
