SX-2000CO is a control output of the matrix system and can be mounted in an EIA equipment rack (1U size). Multiple units can be decentralized in a whole system. It is equipped with 32 control output channels. The indicators on the front panel monitor the control output line status. Control output status when the CPU turns off can be set. The SX-2000CO has two power inputs and can support a dual-redundant power supply system. By using a stand-alone mode, system can be configured with only SX-2000CO, SX-2000CI control input unit and power supply unit, permitting the contact data of multiple channels to be transmitted to the remote locations with simple wiring.