Convertitore Adattatore Modulo Comunicazione Industriale Porta Seriale USB a RS485/RS232
A+TXD: RS485 connects to A, RS232 connects to RXD. B-RXD: RS485 connection B, RS232 connection TXD. Product type: industrial grade USB to RS485/232 converter. Support USB to RS485/RS232 communication (switch by dip switch).