B+B SmartWorx Serial Data Transfer Adapter - 1 x 9-pin DB-9 RS-232 Serial Female - 1 x Terminal Block RS-485 Serial

Isolates and converts RS-232 signals into RS-422 / RS-485 signals and vice versa. Unlike other converters, external software is not required to control data flow. The RS-232 input is wired for DCE and interfaced through a female DB25 or DB9 connector. RS-422 or RS-485 signals are connected to a removable terminal block. External power is applied to separate removable terminal block. A 10 - 48 VDC power supply (not included) is required.