Industrial Serial to Modbus Gateway with 8x RS-232/422/485 ports and 1x Ethernet port, wide temperature range, metal housing with IP30 protection. GW1108-8D(3IN1) is a serial-to-Ethernet Modbus gateway that convert between Modbus TCP and Modbus RTU/ASCII protocols. It supports 8 RS-232/485/422 serial ports (RJ45) and 1 10/100Base-T(X) Ethernet port interface optional. Modbus TCP, Modbus RTU and Modbus ASCII protocol are integrated in the products..