EtherStax analog I/O Models ES2151 and ES2152 interface 16 dc current inputs; 16 voltage inputs; and either 16 current or voltage output signals, respectively; to Ethernet devices or controllers with Modbus TCP/IP or UDP/IP protocol communication. Suited for distributed I/O and SCADA applications, modules Ethernet-enable input signals from 8B signal conditioning modules via DB25 port to monitor variety of sensors. Model ES2152 has DB25 output port to control 8B analog output modules.