Delock Products 62919 Delock Converter 1 x Serial RS-232 DB9 to 1 x Serial RS-485 with ESD protection 15 kV surge protection 600 W and extended temperature range
RS232 to RS485
Industrial RS232/RS485 to Ethernet Converter, EU head
Free Shipping Rs232 To Rs485 Converter,commercial Version,no Power Need,stm485c Ut-201 - Pc Hardware Cables & Adapters - AliExpress