SX-2000SM system manager is designed for use in TOA's matrix system and can be mounted in an EIA Standard component rack (1U size). It can be used in combination with an optional audio input unit audio output unit and remote microphone of the SX-2000 series to make up a complete matrix system and can perform audio signal routing and priority control for the entire system. SX-2000SM itself is equipped with 8 control inputs, 8 control outputs, failure status outputs, failure data inputs/switches, access indicators, mode indicators and failure indicators enabling a wide range of controls and status monitoring. Control input line failure can be detected by connecting resistors to its line. SX-2000SM has a function to supply a stabilized 24V DC. Each control can be performed by way of a CF card inserted into the SX-2000SM unit. Operations of the entire system can be recorded and their contents stored on a CF card as an operation log. The SX-2000SM also features two power inputs making possible the creation of a dual-redundant power system. Equipped with two channels of interfaces for connecting to the emergency power supply units, making it possible to configure the system to operate during a power failure.