... inverse-way switch is with Genlock external sync signal interface, support RS-232, RS-422, RS-485, TCP / IP control, suitable for any size standard ... to prevent misuse.RS-232,RS-422,RS485 Matrix with 2-5 RS-232 serial port, one of the few serial ports can be revised to RS-422, RS-485 ... /18 --- 2049/12/31 CE TUV AN 50058285 0001 Protocol Interface Converter & F5-4511; F5-4511V 2005/03/17 --- 2049/12/ ...