The smart output controller helps in connecting output devices such as relays and relay cards to distributed control systems through RS485 MODBUS protocol . This helps to reduce the wiring required and eliminates the need of a dedicated PLC to control a relay card , hence converting a standard relay card into a smarter one with enhanced communication .The Smart Output Controller is available with output ports for digital control signals. Smart Output Controller is compact and cost effective RS485 Solution. Used for expanding PLC and SCADA based distributed control systems. It is compatible for both EMR'S and SSR's .