The Tesira EX-LOGIC is a half-rack Logic box expander for use with Tesira SERVER and SERVER-IO devices. The EX-LOGIC provides both logic inputs and outputs and through software can be configured as a control interface. There are 16 total connections that can be used as inputs or outputs. 12 of the connections are designed as Logic connections only and will accept contact closure or 5V TTL for input or provide a maximum of 40V/500mA for output. The remaining 4 connections can also be used for Logic connection or as variable voltage control input. The EX-LOGIC also provides a serial port for the output of command strings that can be used to send action commands to other equipment in the system. The EX-LOGIC communicates with the Tesira SERVER or SERVER-IO over Ethernet and is powered by PoE.