C Programmable Remote I/O Module Cost-Effective programmable I/O module Support lwIP and BSD socket library and tiny web server Windows configuration utility included 1 x 10/100Mbps Ethernet interface 1 x Isolation RS-485 port, 1 Serial Console / RS-232 port 4 x Opto-isolated digital inputs 4 x Isolation Analog inputs and 2 x Relay outputs 2 x Maxim 1-Wire interface