ZE-4DI-2AI-2DO is a I/O module with 4 digital inputs, 2 analog inputs, 2 relay outputs, slave for Modbus TCP-IP communication (Ethernet) and Modbus RTU, on two RS485 serial ports. The module supports server mode for the Ethernet communication port with ModbusTCP-IP protocol: Ethernet port (10-100 Mbps), 4 client, Embedded Webserver. ZE-4DI-2AI-2DO allows the possibility to set the parameters via internet (Web-server) or USB (Easy setup software) and the Modbus registers repetition on TCP-IP protocol (NR.1 Ethernet port) and RTU (NR.2 independent slave RS485 ports).