1) RS232 to RS422/RS485 interface converter 2) It can collect 128 node RS485 device, 1,000W ... :1) Wall-Mounted Photo-Isolation Interface Converter2) Point to point, point to multi-point communication3) Supports RS-232 to RS-422/485 conversion, conversion ... protection on each line6) Point to multi-point, allow to connect 128 RS-422 or RS-485 interface device7) Data communication speed 0 ...